CN1793047A - Process for preparing nuclear shell type composite ceramic particle - Google Patents
Process for preparing nuclear shell type composite ceramic particle Download PDFInfo
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- CN1793047A CN1793047A CN 200510019878 CN200510019878A CN1793047A CN 1793047 A CN1793047 A CN 1793047A CN 200510019878 CN200510019878 CN 200510019878 CN 200510019878 A CN200510019878 A CN 200510019878A CN 1793047 A CN1793047 A CN 1793047A
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Abstract
The invention discloses a ceramic core-polymer bonding layer-ceramic shell compounding ceramic powder, which has core shell structure, by the method of using high speed gas flow impacting. The method could achieve the sphericize, film forming, and cladding process of kinds of powder in common temperature and short time, and would realize multi-layer cladding or multi-material multi-layer cladding according to actual request. Comparing the existing method, it could be accomplished in normal temperature, no pollution, short time to take powder-treating and could realize multi-layer cladding or multi-material multi-layer cladding. It has great applied cost in compounding material powder manufacturing aspect.
Description
Technical field
The present invention relates to a kind of preparation method of nuclear shell type composite ceramic particle.
Background technology
Along with the novel material technology of preparing to the microcosmic development that becomes more meticulous, the particle of single structure or composition is in the middle of the process of using, the problem of application requiring occurred satisfying, the modification treatment technology of powder becomes more and more important, has brought a noticeable new ideas-particle design.Design and controlledly construct the research field that becomes more and more important that the matrix material with nucleocapsid structure is Materials science forward position recent years.This class material is because they have the character of many uniquenesses, for example as constructing the favor why the novel capabilities formed material be subjected to the investigator: the operability of monodispersity, nucleocapsid, stability, Modulatory character and relate to the ability of light, electricity, magnetic, catalysis, chemistry and biological respinse.Therefore by rational contrived experiment condition, can be regulated and control many character of matrix material to a great extent, the ceramic composite particle that wherein has nucleocapsid structure has important application prospects at aspects such as matrix material, military project material, mmaterial, structured materials.
The preparation method of nuclear shell type composite ceramic particle has many kinds of methods, and wherein the common chemical method has seed emulsion polymerization, sol-gel method, the precipitator method, out-phase coacervation etc.But because the limitation on the art breading, these methods are difficult to realize that complete quantitative nucleocapsid coats, and cause the microstructural ununiformity of material sometimes, and cost are higher mostly, is difficult for applying; And the preparation of the High Speed Airflow Impact of mechanical French and polishing has the ceramic composite particle of nucleocapsid structure and has advantages such as simple and easy operation control, so has obtained widespread use.
For utilizing chemical method to prepare the composite granule of nucleocapsid structure, composite granule prepares in liquid phase, the forming process that nucleocapsid structure can occur is wayward, the shell material may form free micelle, shell is inhomogeneous, the nucleocapsid composite granule easily forms reunion, and the cycle is long, is difficult to problems such as scale operation.For mechanical milling method, it can't be broken up the reunion that submicron with high-specific surface area or nano-powder self produce, and the component of nucleocapsid composite granule has segregation; And in process of lapping, the material of wearing and tearing can enter in the grinding charge(of mill) material becomes impurity, influences the purity of system.And (FENGCai-mei such as FENG Cai-mei, WANG Wei-min, FU Zheng-yi, Fabrication of TiB2 composite powders coated with BNby high speed airflow impact.Trans.Nonferrous Met.Soc.China, 2005,15,238～241.) the hud typed composite granule of TiB2-boron nitride that under totally-enclosed condition, utilizes High Speed Airflow Impact to prepare, though avoided the contaminated problem of system, but because two-phase hard ceramic interphase interaction power is faint, the contact of just simple point, the problem that core-shell type complex particle exists the shell material to be easy to come off.
Therefore, this paper proposes by design polymer bonding layer to improve contacting between ceramic and ceramic (or metal) particle, to utilize High Speed Airflow Impact to prepare ceramic core-polymer tack coat-pottery (or metal) the shell composite ceramic material with nucleocapsid structure.
Compare with the nucleocapsid composite granule of chemical method preparation, the present invention can select semicontinuous or periodical operation, and in time the adjusting process parameter (can be finished the preparation of nucleocapsid composite particles, great practical extending application value is arranged in the short period of time in 1～10min).
With the mechanical mill composite algorithm relatively, the high velocity air surging force can thoroughly be removed the reunion between submicron or nano-powder, and the coating of powder handles under totally-enclosed, nonpollution environment and finish, inclusion-free is introduced.And among the present invention,, improved pottery and ceramic (or metal) is intergranular contacts, and the polymer bonding layer there is cohesive action to the two-phase hardness of matter, can forms the hud typed ceramic composite particle of dense structure by design polymer bonding layer.
Adopt processing method provided by the invention can not only prepare the hud typed composite particles of various ceramic powders at normal temperature, in the short period; Can realize according to actual needs simultaneously that multilayer coats or the multilayer of multiple material coats.Consult through document and patent widely, still find no the polymeric binder of utilizing in the present invention of under high velocity air impact condition, utilizing and realize the relevant report of pottery and the preparation of pottery (or metal) granular core shell mould composite granule.
Summary of the invention
The objective of the invention is to utilize polymeric binder to prepare hud typed ceramic composite powder by the totally enclosed High Speed Airflow Impact.Totally enclosed high velocity air impact type powder surface modification apparatus system (the NARA NHS-0Hybridization System that the present invention adopts, Nara Machinery Co., Ltd, Tokyo, Japan, be called for short coating machine, main machine structure such as accompanying drawing 2) form by quantitative Analysis system, main frame, finished product collection device, red-tape operati system.Main frame is made up of rotor, stator and the circulation loop of high speed rotating, material is constantly disperseed rapidly under these parts effects, and be subjected to powerful impact force action, also be subjected to simultaneously the effect of the multiple power such as compression, friction, shearing, bump of particle interphase interaction, thereby can be at short notice (1～10min) produce static, particle is softening or particle is forced to squeeze into the coatingparticles kind, make between particle and adhere to mutually, finish fixing, film forming or spheroidization and handle, thereby reach the purpose of surface modification.
Ceramic core-polymer tack coat-pottery (or metal) the shell composite ceramic material of the nucleocapsid structure of the present invention's preparation, the particle diameter of pottery nuclear powder is 1～10 micron, the particle diameter of pottery (or metal) shell powder is 0.03～1 micron.
The polymer bonding layer that designs among the present invention is being played the part of the role of binding agent in system, polymer bonding layer material is polyethylene wax or Poly Propylene Wax base polymer micro mist, and softening temperature is 100 ℃～120 ℃, and particle diameter is 0.1～1 micron.
Details are as follows to technical process of the present invention (referring to Fig. 1) specific implementation process below:
[1] pottery is examined powder and polymkeric substance micro mist (polyethylene wax or Poly Propylene Wax) by quality 40: 2～8 proportionings;
[2] pottery being examined powder and polymer powder mixes after 50 ℃～60 ℃ dryings;
[3] mixture is put in the high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, to carry out the ceramic spheroidization of examining behind the coating machine cavity airtight and become membranization to handle, the speed of mainshaft is controlled at 8000～15000rpm scope, and the treatment time is controlled at 1～10 minute scope;
[4] obtain spheroidization and the pottery nuclear powder that becomes membranization;
[5] the pottery nuclear powder that will handle is as stated above pressed quality 32: 2～16 proportionings with pottery (or metal) shell powder, mixes after 50 ℃～60 ℃ dryings;
[6] mixture is put into once more in the high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, the surface of carrying out pottery nuclear behind the coating machine cavity airtight is coated processing, the speed of mainshaft is controlled at 10000～15000rpm scope, and the treatment time is controlled at 1～10 minute scope;
[7] obtain hud typed ceramic composite powder.
Analyze through scanning electronic microscope (SEM) and transmission electron microscope (TEM), prepared spheroidization and become the good pottery of membranization to examine the hud typed ceramic composite powder of powder and pottery (or metal) shell even compact.
The invention provides a kind of preparation method of hud typed ceramic composite powder, compare with existing preparation method, this method can finish at normal temperatures, pollution-free, may command polymer bonding layer thickness, powder handling time are short, can realize that multilayer coats and the multilayer of multiple material coats, be the method for the high various hud typed ceramic composite powders of preparation of a kind of simple, economy and efficient, have great application value aspect preparing at composite material powder.
Description of drawings
Fig. 1: preparation technology's schema of hud typed ceramic composite powder.
Fig. 2: High Speed Airflow Impact surface modification device host structure chart.
Wherein: 1-blow-off valve, 2-relief outlet, 3-fin, 4-rotor, 5-chuck, 6-stator, 7-circulation loop, 8-input port.
Fig. 3: the model diagram of hud typed ceramic composite powder.
Wherein: 1-pottery nuclear, 2-polymer bonding layer, 3-pottery (or metal) shell.
Fig. 4: TiB2 spheroidization and the scanning electronic microscope that becomes membranization (SEM) photo.
Fig. 5: scanning electronic microscope (SEM) photo of TiB2 cladded type composite granule.
Fig. 6: TiB2 spheroidization and the transmission electron microscope that becomes membranization (TEM) photo.
Fig. 7: transmission electron microscope (TEM) photo of TiB2 cladded type composite granule.
Specific embodiments
Embodiment 1: High Speed Airflow Impact prepares spheroidization and the pottery nuclear TiB2 powder that becomes membranization, with TiB2 powder and 50 ℃ of dryings of polyethylene wax micro mist and mix, the particle diameter of TiB2 powder and polyethylene wax micro mist is respectively 8 microns and 1 micron, the weight ratio of TiB2 powder and polyethylene wax micro mist is 40: 2, transfer in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, with the spheroidization that carries out TiB2 behind the coating machine cavity airtight with become membranization to handle, rotor speed is controlled at 12000rpm, and the treatment time was controlled at 10 minutes.Scanning electronic microscope (SEM) photo of spheroidization and the pottery nuclear TiB2 powder that becomes membranization and transmission electron microscope (TEM) photo are respectively as Fig. 4 and shown in Figure 6.Mix after the alumina powder jointed 60 ℃ of dryings of TiB2 powder of just having handled as stated above and ceramic case, the weight ratio of pottery nuclear TiB2 powder and ceramic case alumina powder jointed (particle diameter is 0.5 micron) 32: 16, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, coat processing with carrying out TiB2-alumina core shell mould behind the coating machine cavity airtight, rotor speed is controlled at 12500rpm, and the treatment time was controlled at 5 minutes.Scanning electronic microscope (SEM) photo of hud typed TiB2-aluminum oxide composite granule and transmission electron microscope (TEM) photo are respectively as Fig. 5 and shown in Figure 7.
Embodiment 2: High Speed Airflow Impact prepares spheroidization and the pottery nuclear TiB2 powder that becomes membranization, with TiB2 powder and 50 ℃ of dryings of Poly Propylene Wax wax micro mist and mix, the particle diameter of TiB2 powder and Poly Propylene Wax micro mist is respectively 10 microns and 1 micron, the weight ratio of TiB2 powder and Poly Propylene Wax micro mist is 40: 5, transfer in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, with the spheroidization that carries out TiB2 behind the coating machine cavity airtight with become membranization to handle, rotor speed is controlled at 10000rpm, and the treatment time was controlled at 10 minutes.Mix after the alumina powder jointed 60 ℃ of dryings of TiB2 powder of just having handled as stated above and ceramic case, the weight ratio of pottery nuclear TiB2 powder and ceramic case alumina powder jointed (particle diameter is 1 micron) 32: 10, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, coat processing with carrying out TiB2-alumina core shell mould behind the coating machine cavity airtight, rotor speed is controlled at 10000rpm, and the treatment time was controlled at 5 minutes.
Embodiment 3: High Speed Airflow Impact prepares spheroidization and the pottery nuclear TiB2 powder that becomes membranization, with TiB2 powder and 55 ℃ of dryings of Poly Propylene Wax wax micro mist and mix, the particle diameter of TiB2 powder and Poly Propylene Wax micro mist is respectively 1 micron and 0.1 micron, the weight ratio of TiB2 powder and Poly Propylene Wax micro mist is 40: 6, transfer in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, with the spheroidization that carries out TiB2 behind the coating machine cavity airtight with become membranization to handle, rotor speed is controlled at 8000rpm, and the treatment time was controlled at 10 minutes.Mix after the alumina powder jointed 60 ℃ of dryings of TiB2 powder of just having handled as stated above and ceramic case, the weight ratio of pottery nuclear TiB2 powder and ceramic case alumina powder jointed (particle diameter is 100 nanometers) 32: 16, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, coat processing with carrying out TiB2-alumina core shell mould behind the coating machine cavity airtight, rotor speed is controlled at 15000rpm, and the treatment time was controlled at 5 minutes.
Embodiment 4: High Speed Airflow Impact prepares spheroidization and the pottery nuclear beta-silicon nitride powder that becomes membranization, with beta-silicon nitride powder and 50 ℃ of dryings of polyethylene wax micro mist and mix, the particle diameter of beta-silicon nitride powder and polyethylene wax micro mist is respectively 3 microns and 0.5 micron, the weight ratio of beta-silicon nitride powder and polyethylene wax micro mist is 40: 5, transfer in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, with the spheroidization that carries out silicon nitride behind the coating machine cavity airtight with become membranization to handle, rotor speed is controlled at 10000rpm, and the treatment time was controlled at 8 minutes.Mix after the alumina powder jointed 60 ℃ of dryings of beta-silicon nitride powder of just having handled as stated above and ceramic case, the weight ratio of pottery nuclear beta-silicon nitride powder and ceramic case alumina powder jointed (particle diameter is 0.3 micron) 32: 6, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, coat processing with carrying out silicon nitride-alumina core shell mould behind the coating machine cavity airtight, rotor speed is controlled at 10000rpm, and the treatment time was controlled at 5 minutes.
Embodiment 5: High Speed Airflow Impact prepares spheroidization and the pottery nuclear beta-silicon nitride powder that becomes membranization, with beta-silicon nitride powder and 50 ℃ of dryings of polyethylene wax micro mist and mix, the particle diameter of beta-silicon nitride powder and polyethylene wax micro mist is respectively 6 microns and 0.5 micron, the weight ratio of beta-silicon nitride powder and polyethylene wax micro mist is 40: 8, transfer in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, with the spheroidization that carries out silicon nitride behind the coating machine cavity airtight with become membranization to handle, rotor speed is controlled at 8000rpm, and the treatment time was controlled at 10 minutes.Mix after 55 ℃ of dryings of beta-silicon nitride powder of just having handled as stated above and ceramic case yttrium oxide powder, the weight ratio of pottery nuclear beta-silicon nitride powder and ceramic case yttrium oxide powder (particle diameter is 0.6 micron) 32: 8, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, handle carrying out the hud typed coating of silicon nitride-yttrium oxide behind the coating machine cavity airtight, rotor speed is controlled at 13000rpm, and the treatment time was controlled at 5 minutes.
Embodiment 6: High Speed Airflow Impact prepares spheroidization and the pottery nuclear beta-silicon nitride powder that becomes membranization, with beta-silicon nitride powder and 55 ℃ of dryings of Poly Propylene Wax micro mist and mix, the particle diameter of beta-silicon nitride powder and Poly Propylene Wax micro mist is respectively 10 microns and 0.8 micron, the weight ratio of beta-silicon nitride powder and Poly Propylene Wax micro mist is 40: 6, transfer in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, with the spheroidization that carries out silicon nitride behind the coating machine cavity airtight with become membranization to handle, rotor speed is controlled at 10000rpm, and the treatment time was controlled at 6 minutes.Mix after 60 ℃ of dryings of beta-silicon nitride powder of just having handled as stated above and ceramic case aluminium nitride powder, the weight ratio of pottery nuclear beta-silicon nitride powder and ceramic case aluminium nitride powder (particle diameter is 0.8 micron) 32: 6, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, handle carrying out the hud typed coating of silicon nitride-aluminium nitride behind the coating machine cavity airtight, rotor speed is controlled at 14000rpm, and the treatment time was controlled at 8 minutes.
Embodiment 7: High Speed Airflow Impact prepares spheroidization and the pottery nuclear silicon carbide powder that becomes membranization, with silicon carbide powder and 60 ℃ of dryings of Poly Propylene Wax micro mist and mix, the particle diameter of silicon carbide powder and Poly Propylene Wax micro mist is respectively 10 microns and 0.8 micron, the weight ratio of beta-silicon nitride powder and Poly Propylene Wax micro mist is 40: 6, transfer in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, with the spheroidization that carries out silicon carbide behind the coating machine cavity airtight with become membranization to handle, rotor speed is controlled at 10000rpm, and the treatment time was controlled at 10 minutes.Mix after 60 ℃ of dryings of silicon carbide powder of just having handled as stated above and ceramic case aluminium nitride powder, the weight ratio of pottery nuclear silicon carbide powder and ceramic case aluminium nitride powder (particle diameter is 0.8 micron) 32: 10, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, handle carrying out the hud typed coating of silicon nitride-aluminium nitride behind the coating machine cavity airtight, rotor speed is controlled at 10000rpm, and the treatment time was controlled at 10 minutes.
Embodiment 8: High Speed Airflow Impact prepares spheroidization and the pottery nuclear aluminium nitride powder that becomes membranization, with aluminium nitride powder and 50 ℃ of dryings of polyethylene wax micro mist and mix, the particle diameter of aluminium nitride powder and polyethylene wax micro mist is respectively 3 microns and 0.3 micron, the weight ratio of aluminium nitride powder and polyethylene wax micro mist is 40: 5, transfer in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, with the spheroidization that carries out aluminium nitride behind the coating machine cavity airtight with become membranization to handle, rotor speed is controlled at 12000rpm, and the treatment time was controlled at 8 minutes.Mix after the aluminium nitride powder of just having handled as stated above and 55 ℃ of dryings of ceramic case boron nitride powder, the weight ratio of pottery nuclear aluminium nitride powder and ceramic case boron nitride powder (particle diameter is 0.6 micron) 32: 10, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, handle carrying out the hud typed coating of aluminium nitride-boron nitride behind the coating machine cavity airtight, rotor speed is controlled at 15000rpm, and the treatment time was controlled at 5 minutes.
Embodiment 9: High Speed Airflow Impact prepares spheroidization and the pottery nuclear boron carbide powder that becomes membranization, with boron carbide powder and 50 ℃ of dryings of Poly Propylene Wax micro mist and mix, the particle diameter of boron carbide powder and Poly Propylene Wax micro mist is respectively 5 microns and 0.5 micron, the weight ratio of boron carbide powder and Poly Propylene Wax micro mist is 40: 4, transfer in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, with the spheroidization that carries out norbide behind the coating machine cavity airtight with become membranization to handle, rotor speed is controlled at 8000rpm, and the treatment time was controlled at 10 minutes.Mix after the alumina powder jointed 60 ℃ of dryings of boron carbide powder of just having handled as stated above and ceramic case, the weight ratio of pottery nuclear boron carbide powder and ceramic case alumina powder jointed (particle diameter is 0.4 micron) 32: 16, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, coat processing with carrying out norbide-alumina core shell mould behind the coating machine cavity airtight, rotor speed is controlled at 15000rpm, and the treatment time was controlled at 8 minutes.
Embodiment 10: High Speed Airflow Impact prepares spheroidization and the pottery nuclear boron carbide powder that becomes membranization, with boron carbide powder and 50 ℃ of dryings of polyethylene wax micro mist and mix, the particle diameter of boron carbide powder and polyethylene wax micro mist is respectively 5 microns and 0.8 micron, the weight ratio of boron carbide powder and polyethylene wax micro mist is 40: 8, transfer in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, with the spheroidization that carries out norbide behind the coating machine cavity airtight with become membranization to handle, rotor speed is controlled at 9000rpm, and the treatment time was controlled at 10 minutes.Mix after 60 ℃ of dryings of boron carbide powder of just having handled as stated above and carbon black powder, the weight ratio of pottery nuclear boron carbide powder and carbon black powder (particle diameter is 0.4 micron) 32: 6, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, handle carrying out the hud typed coating of norbide-carbon black behind the coating machine cavity airtight, rotor speed is controlled at 12500rpm, and the treatment time was controlled at 8 minutes.
Embodiment 11: High Speed Airflow Impact prepares spheroidization and the pottery nuclear titanium carbide powder that becomes membranization, with titanium carbide powder and 55 ℃ of dryings of Poly Propylene Wax micro mist and mix, the particle diameter of titanium carbide powder and Poly Propylene Wax micro mist is respectively 8 microns and 0.5 micron, the weight ratio of titanium carbide powder and Poly Propylene Wax micro mist is 40: 8, transfer in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, with the spheroidization that carries out titanium carbide behind the coating machine cavity airtight with become membranization to handle, rotor speed is controlled at 10000rpm, and the treatment time was controlled at 8 minutes.Mix after 60 ℃ of dryings of titanium carbide powder of just having handled as stated above and ceramic case silicon carbide powder, the weight ratio of pottery nuclear titanium carbide powder and ceramic case silicon carbide powder (particle diameter is 0.8 micron) 32: 12, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, handle carrying out the hud typed coating of titanium carbide-titanium carbide silicon behind the coating machine cavity airtight, rotor speed is controlled at 13000rpm, and the treatment time was controlled at 5 minutes.
Embodiment 12: it is alumina powder jointed with the pottery nuclear that becomes membranization that High Speed Airflow Impact prepares spheroidization, with alumina powder jointed and 55 ℃ of dryings of polyethylene wax micro mist and mix, alumina powder jointed and particle diameter polyethylene wax micro mist is respectively 8 microns and 0.8 micron, alumina powder jointed and weight ratio polyethylene wax micro mist is 40: 3, transfer in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, with the spheroidization that carries out aluminum oxide behind the coating machine cavity airtight with become membranization to handle, rotor speed is controlled at 11000rpm, and the treatment time was controlled at 5 minutes.Mix after 60 ℃ of dryings of the alumina powder jointed and magnesium oxide powder of just having handled as stated above, the alumina powder jointed weight ratio with magnesium oxide powder (particle diameter is 0.6 micron) of pottery nuclear 32: 8, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, handle carrying out the hud typed coating of aluminum oxide-magnesium oxide behind the coating machine cavity airtight, rotor speed is controlled at 15000rpm, and the treatment time was controlled at 6 minutes.
Embodiment 13: it is alumina powder jointed with the pottery nuclear that becomes membranization that High Speed Airflow Impact prepares spheroidization, with alumina powder jointed and 55 ℃ of dryings of Poly Propylene Wax micro mist and mix, alumina powder jointed and the particle diameter Poly Propylene Wax micro mist is respectively 6 microns and 0.5 micron, alumina powder jointed and the weight ratio Poly Propylene Wax micro mist is 40: 3, transfer in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, with the spheroidization that carries out aluminum oxide behind the coating machine cavity airtight with become membranization to handle, rotor speed is controlled at 13000rpm, and the treatment time was controlled at 6 minutes.Mix after 50 ℃ of dryings of the alumina powder jointed and yttrium oxide powder of just having handled as stated above, the alumina powder jointed weight ratio with yttrium oxide powder (particle diameter is 0.3 micron) of pottery nuclear 32: 8, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, handle carrying out the hud typed coating of aluminum oxide-yttrium oxide behind the coating machine cavity airtight, rotor speed is controlled at 10000rpm, and the treatment time was controlled at 10 minutes.
Embodiment 14: High Speed Airflow Impact prepares spheroidization and the pottery nuclear TiB2 powder that becomes membranization, with TiB2 powder and 60 ℃ of dryings of Poly Propylene Wax micro mist and mix, the particle diameter of TiB2 powder and Poly Propylene Wax micro mist is respectively 5 microns and 0.5 micron, the weight ratio of TiB2 powder and Poly Propylene Wax micro mist is 40: 5, transfer in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, with the spheroidization that carries out TiB2 behind the coating machine cavity airtight with become membranization to handle, rotor speed is controlled at 10000rpm, and the treatment time was controlled at 10 minutes.To mix after TiB2 powder that handle as stated above and 50 ℃ of dryings of shell metallic nickel powder body, the weight ratio of TiB2 powder and shell metallic nickel powder body (particle diameter is 50 nanometers) 32: 2, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, handle carrying out the hud typed coating of TiB2-nickel behind the coating machine cavity airtight, rotor speed is controlled at 10000rpm, and the treatment time was controlled at 10 minutes.
Embodiment 15: High Speed Airflow Impact prepares spheroidization and the pottery nuclear TiB2 powder that becomes membranization, with TiB2 powder and 60 ℃ of dryings of Poly Propylene Wax micro mist and mix, the particle diameter of TiB2 powder and Poly Propylene Wax micro mist is respectively 5 microns and 1 micron, the weight ratio of TiB2 powder and Poly Propylene Wax micro mist is 40: 8, transfer in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, with the spheroidization that carries out TiB2 behind the coating machine cavity airtight with become membranization to handle, rotor speed is controlled at 15000rpm, and the treatment time was controlled at 5 minutes.To mix after TiB2 powder that handle as stated above and 50 ℃ of dryings of shell metallic molybdenum powder body, the weight ratio of TiB2 powder and shell metallic molybdenum powder body (particle diameter is 100 nanometers) 32: 10, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, handle carrying out the hud typed coating of TiB2-molybdenum behind the coating machine cavity airtight, rotor speed is controlled at 15000rpm, and the treatment time was controlled at 3 minutes.
Embodiment 16: High Speed Airflow Impact prepares spheroidization and the pottery nuclear TiB2 powder that becomes membranization, with TiB2 powder and 60 ℃ of dryings of Poly Propylene Wax micro mist and mix, the particle diameter of TiB2 powder and Poly Propylene Wax micro mist is respectively 5 microns and 1 micron, the weight ratio of TiB2 powder and Poly Propylene Wax micro mist is 40: 6, transfer in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, with the spheroidization that carries out TiB2 behind the coating machine cavity airtight with become membranization to handle, rotor speed is controlled at 15000rpm, and the treatment time was controlled at 5 minutes.To mix after TiB2 powder that handle as stated above and 50 ℃ of dryings of shell metallic iron powder body, the weight ratio of TiB2 powder and shell metallic iron powder body (particle diameter is 100 nanometers) 32: 10, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, handle carrying out the hud typed coating of TiB2-iron behind the coating machine cavity airtight, rotor speed is controlled at 12000rpm, and the treatment time was controlled at 5 minutes.
Embodiment 17: it is alumina powder jointed with the pottery nuclear that becomes membranization that High Speed Airflow Impact prepares spheroidization, with alumina powder jointed and 50 ℃ of dryings of polyethylene wax micro mist and mix, alumina powder jointed and particle diameter polyethylene wax micro mist is respectively 3 microns and 0.1 micron, alumina powder jointed and weight ratio polyethylene wax micro mist is 40: 4, transfer in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, with the spheroidization that carries out aluminum oxide behind the coating machine cavity airtight with become membranization to handle, rotor speed is controlled at 12000rpm, and the treatment time was controlled at 8 minutes.To mix after alumina powder jointed and 50 ℃ of dryings of shell metallic nickel powder body of having handled as stated above, the weight ratio of alumina powder jointed and shell metallic nickel powder body (particle diameter is 50 nanometers) 32: 8, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, handle carrying out the hud typed coating of aluminum oxide-nickel behind the coating machine cavity airtight, rotor speed is controlled at 15000rpm, and the treatment time was controlled at 6 minutes.
Embodiment 18: it is alumina powder jointed with the pottery nuclear that becomes membranization that High Speed Airflow Impact prepares spheroidization, with alumina powder jointed and 50 ℃ of dryings of Poly Propylene Wax micro mist and mix, alumina powder jointed and the particle diameter Poly Propylene Wax micro mist is respectively 4 microns and 0.1 micron, alumina powder jointed and the weight ratio Poly Propylene Wax micro mist is 40: 2, transfer in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, with the spheroidization that carries out aluminum oxide behind the coating machine cavity airtight with become membranization to handle, rotor speed is controlled at 11000rpm, and the treatment time was controlled at 10 minutes.To mix after alumina powder jointed and 50 ℃ of dryings of shell metallic tungsten powder body of having handled as stated above, the weight ratio of alumina powder jointed and shell metallic tungsten powder body (particle diameter is 0.4 micron) 32: 16, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, handle carrying out the hud typed coating of aluminum oxide-tungsten behind the coating machine cavity airtight, rotor speed is controlled at 15000rpm, and the treatment time was controlled at 5 minutes.
Embodiment 19: High Speed Airflow Impact prepares spheroidization and the pottery nuclear tungsten carbide powder that becomes membranization, with tungsten carbide powder and 55 ℃ of dryings of polyethylene wax micro mist and mix, the particle diameter of tungsten carbide powder and polyethylene wax micro mist is respectively 5 microns and 0.2 micron, the weight ratio of tungsten carbide powder and polyethylene wax micro mist is 40: 6, transfer in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, with the spheroidization that carries out wolfram varbide behind the coating machine cavity airtight with become membranization to handle, rotor speed is controlled at 10000rpm, and the treatment time was controlled at 10 minutes.To mix after tungsten carbide powder that handle as stated above and 50 ℃ of dryings of shell metallic cobalt powder body, the weight ratio of tungsten carbide powder and shell metallic cobalt powder body (particle diameter is 100 nanometers) 32: 2, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, handle carrying out the hud typed coating of tungsten-cobalt carbide behind the coating machine cavity airtight, rotor speed is controlled at 15000rpm, and the treatment time was controlled at 4 minutes.
Embodiment 20: High Speed Airflow Impact prepares spheroidization and the pottery nuclear titanium carbide powder that becomes membranization, with titanium carbide powder and 50 ℃ of dryings of Poly Propylene Wax micro mist and mix, the particle diameter of titanium carbide powder and Poly Propylene Wax micro mist is respectively 6 microns and 0.5 micron, the weight ratio of titanium carbide powder and Poly Propylene Wax micro mist is 40: 3, transfer in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, with the spheroidization that carries out titanium carbide behind the coating machine cavity airtight with become membranization to handle, rotor speed is controlled at 12000rpm, and the treatment time was controlled at 8 minutes.To mix after titanium carbide powder that handle as stated above and 50 ℃ of dryings of shell metallic nickel powder body, the weight ratio of titanium carbide powder and shell metallic nickel powder body (particle diameter is 80 nanometers) 32: 3, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, handle carrying out the hud typed coating of titanium carbide-nickel behind the coating machine cavity airtight, rotor speed is controlled at 12500rpm, and the treatment time was controlled at 10 minutes.
Embodiment 21: High Speed Airflow Impact prepares spheroidization and the pottery nuclear titanium carbide powder that becomes membranization, with titanium carbide powder and 50 ℃ of dryings of Poly Propylene Wax micro mist and mix, the particle diameter of titanium carbide powder and Poly Propylene Wax micro mist is respectively 6 microns and 0.5 micron, the weight ratio of titanium carbide powder and Poly Propylene Wax micro mist is 40: 4, transfer in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, with the spheroidization that carries out titanium carbide behind the coating machine cavity airtight with become membranization to handle, rotor speed is controlled at 12000rpm, and the treatment time was controlled at 10 minutes.To mix after titanium carbide powder that handle as stated above and 50 ℃ of dryings of shell metallic nickel powder body, the weight ratio of titanium carbide powder and shell metallic nickel powder body (particle diameter is 80 nanometers) 32: 3, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, handle carrying out the hud typed coating of titanium carbide-nickel behind the coating machine cavity airtight, rotor speed is controlled at 12500rpm, and the treatment time was controlled at 10 minutes.After having handled hud typed titanium carbide-nickel powder body of obtaining and 50 ℃ of dryings of Poly Propylene Wax as stated above, mix, the weight ratio of hud typed titanium carbide-nickle composite powder and Poly Propylene Wax 40: 4, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, the Poly Propylene Wax that carries out hud typed titanium carbide-nickel behind the coating machine cavity airtight is coated processing, rotor speed is controlled at 12500rpm, and the treatment time was controlled at 10 minutes.To mix after hud typed titanium carbide-nickle composite powder of handling as stated above and 50 ℃ of dryings of molybdenum powder, the weight ratio of hud typed titanium carbide-nickel powder body and molybdenum powder (particle diameter is 80 nanometers) 32: 2, put into once more in the main frame of totally enclosed high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, the coating of carrying out hud typed titanium carbide-nickel composite powder and molybdenum powder behind the coating machine cavity airtight is handled, rotor speed is controlled at 15000rpm, and the treatment time was controlled at 5 minutes.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (5)
1, a kind of preparation method of nuclear shell type composite ceramic particle is characterized in that composite ceramic particle follows these steps to prepare and get:
1. pottery is examined powder and polymkeric substance micro mist (polyethylene wax or Poly Propylene Wax) by quality 40: 2～8 proportionings;
2. pottery being examined powder and polymer powder mixes after 50 ℃～60 ℃ dryings;
3. mixture is put in the high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, to carry out the ceramic spheroidization of examining behind the coating machine cavity airtight and become membranization to handle, the speed of mainshaft is controlled at 8000～15000rpm scope, and the treatment time is controlled at 1～10 minute scope;
4. obtain spheroidization and the pottery nuclear powder that becomes membranization;
5. the pottery nuclear powder that will handle is as stated above pressed quality 32: 2～16 proportionings with pottery (or metal) shell powder, mixes after 50 ℃～60 ℃ dryings;
6. mixture is put into once more in the high velocity air impact type powder surface modification device, feeding water coolant makes working temperature be controlled at room temperature, the surface of carrying out pottery nuclear behind the coating machine cavity airtight is coated processing, the speed of mainshaft is controlled at 10000～15000rpm scope, and the treatment time is controlled at 1～10 minute scope;
7. obtain hud typed ceramic composite powder.
2, method according to claim 1, it is characterized in that adopting high velocity air impact type process for modifying surface to prepare hud typed ceramic composite powder, can realize according to actual needs that multilayer coats or the multilayer of multiple material coats and carry out the needed NEW TYPE OF COMPOSITE powder of autotelic preparation according to " particle design " theory.
3, method according to claim 1, it is characterized in that it mainly being to adopt the polymer bonding layer to improve contacting between ceramic and ceramic (or metal) powder in the method, play binding agent, finish of the coating of seed to coatingparticles, polymer bonding layer material is polyethylene wax or Poly Propylene Wax base polymer micro mist, softening temperature is 100 ℃～120 ℃, and particle diameter is 0.1～1 micron.
4, according to the method for claim 1, it is characterized in that: the spheroidization of coatingparticles with become membranization can one the step finish and thickness that can the controlling polymers tack coat.
5, according to right 1 described method, its feature can be selected continuous, semicontinuous and periodical operation in preparation process.
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| CN102294473A (en) * | 2011-08-31 | 2011-12-28 | 株洲钻石切削刀具股份有限公司 | TiC/Ti(C,N)-Mo-Ni/Co composite powder and preparation method and application thereof |
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| CN1308035A (en) * | 2001-02-05 | 2001-08-15 | 吴哲雄 | Ceramic surface treating technology |
| EP1587883B1 (en) * | 2003-01-24 | 2015-06-10 | Showa Denko K.K. | Surface modification method for inorganic oxide powder, powder produced by the method and use of the powder |
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