CN116397123B - Abrasion resistant high nickel chromium/B 2 O 3 Material, preparation method and application thereof - Google Patents
Abrasion resistant high nickel chromium/B 2 O 3 Material, preparation method and application thereof Download PDFInfo
- Publication number
- CN116397123B CN116397123B CN202310676629.7A CN202310676629A CN116397123B CN 116397123 B CN116397123 B CN 116397123B CN 202310676629 A CN202310676629 A CN 202310676629A CN 116397123 B CN116397123 B CN 116397123B
- Authority
- CN
- China
- Prior art keywords
- powder
- chromium
- high nickel
- ball milling
- hours
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000463 material Substances 0.000 title claims abstract description 84
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 229910018487 Ni—Cr Inorganic materials 0.000 title claims abstract description 66
- 238000005299 abrasion Methods 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000000843 powder Substances 0.000 claims abstract description 75
- 238000000498 ball milling Methods 0.000 claims abstract description 73
- 239000011812 mixed powder Substances 0.000 claims abstract description 37
- 239000011651 chromium Substances 0.000 claims abstract description 33
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000005245 sintering Methods 0.000 claims abstract description 33
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000001301 oxygen Substances 0.000 claims abstract description 20
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 20
- 238000011049 filling Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 10
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 8
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 8
- 238000005303 weighing Methods 0.000 claims abstract description 8
- 239000011261 inert gas Substances 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 229910002804 graphite Inorganic materials 0.000 claims description 14
- 239000010439 graphite Substances 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 10
- 238000007731 hot pressing Methods 0.000 claims description 7
- 229910000623 nickel–chromium alloy Inorganic materials 0.000 abstract description 13
- 238000005728 strengthening Methods 0.000 abstract description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 10
- 238000002156 mixing Methods 0.000 description 9
- 229910001120 nichrome Inorganic materials 0.000 description 7
- 229910052786 argon Inorganic materials 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 5
- 239000010883 coal ash Substances 0.000 description 4
- 238000011068 loading method Methods 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 238000002161 passivation Methods 0.000 description 3
- 229910000521 B alloy Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
- C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
- C22C32/0026—Matrix based on Ni, Co, Cr or alloys thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/041—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by mechanical alloying, e.g. blending, milling
Abstract
The invention relates to the technical field of surface strengthening, in particular to an abrasion-resistant high nickel-chromium/B 2 O 3 Materials, and methods of making and using the same. Abrasion resistant high nickel chromium/B 2 O 3 The preparation method of the material comprises the following steps: weighing Cr powder and Ni powder according to a molar ratio a to b, and then filling the weighed Cr powder and Ni powder into a ball milling tank capable of being vacuumized, wherein the value range of a is 2.8-3.2, and the value range of b is 6.8-7.2; vacuumizing, filling inert gas, and performing ball milling; adding the B powder into a ball milling tank, wherein the weight ratio of the B powder to Cr and Ni mixed powder is 0.5-5%; ball milling is carried out while preheated oxygen is introduced; after the ball milling tank is cooled to room temperature, the mixed powder is taken out from the tank and put into a hot-press sintering furnace for hot-press sintering, thus obtaining the high nickel-chromium/B 2 O 3 A material. The invention provides abrasion-resistant high nickel-chromium/B 2 O 3 High nickel-chromium/B prepared by material preparation method 2 O 3 Materials and no B 2 O 3 Compared with the high nickel-chromium alloy, the abrasion resistance can be improved by more than 2 times, the cost is only increased by about 30-40%, and the high nickel-chromium alloy has the obvious advantage of high cost performance.
Description
Technical Field
The invention relates to the technical field of surface strengthening, in particular to an abrasion-resistant high nickel-chromium/B 2 O 3 Materials, and methods of making and using the same.
Background
The application of high nichrome is very wide, for example: the high-nickel-chromium alloy material can be applied to a coal-fired power plant boiler unit, the service environment of the high-nickel-chromium alloy material on the surface becomes more complex and severe along with the improvement of the operation parameters of the coal-fired power plant boiler unit, and the abrasion problems of smoke, high temperature and coal ash are increasingly serious, so that the high-nickel-chromium alloy material forms a serious threat to the safe operation of a thermal power plant unit, and therefore, the high-nickel-chromium alloy material has important innovation value and engineering application significance on how to improve the abrasion resistance of the high-nickel-chromium alloy.
Disclosure of Invention
The invention aims to provide an abrasion-resistant high nickel-chromium/B 2 O 3 The material and the preparation method and application thereof are used for solving the technical problem of poor abrasion resistance of the high nickel-chromium alloy in the prior art.
The invention provides abrasion-resistant high nickel-chromium/B 2 O 3 A method of preparing a material comprising:
first charging: weighing Cr powder and Ni powder according to a molar ratio a to b, and then filling the weighed Cr powder and Ni powder into a ball milling tank capable of being vacuumized, wherein the value range of a is 2.8-3.2, and the value range of b is 6.8-7.2;
ball milling for the first time: vacuumizing, filling inert gas, and performing ball milling;
and (3) secondary feeding: adding the B powder into a ball milling tank, wherein the weight ratio of the B powder to Cr and Ni mixed powder is 0.5-5%;
secondary ball milling: ball milling is carried out while preheated oxygen is introduced;
hot pressing and sintering: after the ball milling tank is cooled to room temperature, the mixed powder is taken out from the tank and put into a hot-press sintering furnace for hot-press sintering, thus obtaining the high nickel-chromium/B 2 O 3 A material.
Preferably, as an embodiment, in the hot press sintering step, the sintering pressure is: 30-100MPa; the heating parameters are as follows: gradually heating to 300-360 ℃ for 2-4 hours, then preserving heat for 0.4-0.6 hours, then gradually heating to 750-850 ℃ for 1.5-2.5 hours, then preserving heat for 0.8-1.2 hours, then gradually heating to 1100-1300 ℃ for 1.5-2.5 hours, and then preserving heat for 2-5 hours.
Preferably, as an embodiment, the Cr powder has a particle size of 200 μm or less and a purity of 99.5% or more;
and/or the Ni powder has a particle size of 200 μm or less and a purity of 99.5% or more;
and/or the particle size of the powder B is less than 100 mu m, and the purity is more than 99%.
Preferably, as an embodiment, in the first ball milling step, the ball milling duration is 5 to 30 hours;
and/or in the secondary ball milling step, the ball milling time is 1-5 hours.
Preferably, as an implementation manner, in the secondary ball milling step, the purity of the introduced oxygen is more than 99%, the flow is 0.1-0.5ml/min, the time is 1-10min, and the temperature is 30-100 ℃.
Preferably, as an implementation manner, in the first ball milling step, the ball-to-material ratio is a:1, wherein the value of a is 9-11, preferably 10.
Preferably, in the hot press sintering step, the mixed powder is taken out of the tank, put into a graphite crucible, and then the graphite crucible containing the mixed powder is put into a hot press sintering furnace.
Preferably, as an implementation manner, after the step of hot press sintering, the preparation method further includes material taking: making the high nickel-chromium/B 2 O 3 Cooling the material to room temperature along with the furnace, and then taking out the high nickel-chromium/B 2 O 3 A material.
The invention also provides an abrasion-resistant high nickel-chromium/B 2 O 3 Materials using the above-mentioned abrasion-resistant high nickel chromium/B 2 O 3 The material is prepared by a preparation method.
The invention also provides an abrasion-resistant high nickel-chromium/B 2 O 3 Use of a material, said abrasion-resistant high nickel chromium/B 2 O 3 The material is applied to the surface of the boiler unit.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides abrasion-resistant high nickel-chromium/B 2 O 3 The preparation process of the material is simpler, and the B powder is reacted with oxygen to generate B during ball milling 2 O 3 Higher purity, and is beneficial to improving the finally obtained high nickel-chromium/B 2 O 3 The abrasion resistance of the material is excellent, particularly to coal ash smoke; by controlling the weight of the B powder, not only the ideal abrasion resistance can be achieved, but also the adhesion of the passivation film can be ensured, thus the B powder does not contain 2 O 3 In the present example, abrasion-resistant high nickel chromium/B 2 O 3 The abrasion resistance of the material can be improved by more than 2 times, and the cost is only increased by about 30-40%, so that the material has the advantage of obvious high cost performance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a high nickel-chromium/B alloy according to an embodiment of the present invention 2 O 3 Metallographic electron microscope pictures of the materials.
Detailed Description
The invention adds B into the high nickel-chromium alloy 2 O 3 The abrasion resistance is improved.
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention will now be described in further detail by way of specific examples of embodiments in connection with the accompanying drawings.
This embodiment provides an abrasion resistant high nickel chromium/B 2 O 3 A method of making a material comprising:
first charging: weighing Cr powder and Ni powder according to a molar ratio a to b, and then filling the weighed Cr powder and Ni powder into a ball milling tank capable of being vacuumized, wherein the value range of a is 2.8-3.2, and the value range of b is 6.8-7.2;
ball milling for the first time: vacuumizing, filling inert gas, and performing ball milling to grind and mix Cr powder and Ni powder in a ball milling tank; the inert gas is filled to prevent the mixed powder from oxidation reaction and reduce impurities, and can be argon;
and (3) secondary feeding: adding the B powder into a ball milling tank, wherein the weight ratio of the B powder to the Cr and Ni mixed powder is 0.5-5%, preferably 1-3%, and more preferably 2-2.5%;
secondary ball milling: ball milling is carried out while preheated oxygen is introduced, so that B powder reacts with oxygen to generate B 2 O 3 And for B in the ball milling tank 2 O 3 Grinding and mixing with Cr powder and Ni powderCombining;
hot pressing and sintering: after the ball milling tank is cooled to room temperature, the mixed powder is taken out from the tank and put into a hot-press sintering furnace for hot-press sintering, thus obtaining the high nickel-chromium/B 2 O 3 A material. Wherein, because the pressure is applied in the sintering process, the mixed powder is taken out from the tank, and then the mixed powder is directly put into a hot-pressed sintering furnace without compacting.
The embodiment provides abrasion-resistant high nickel-chromium/B 2 O 3 The preparation method of the material has simple process, and in the secondary ball milling step, the B powder is ball milled and simultaneously reacts with oxygen to generate B 2 O 3 Higher purity, and is beneficial to improving the finally obtained high nickel-chromium/B 2 O 3 The abrasion resistance of the material is excellent, particularly to coal ash smoke; in the secondary charging step, B powder with corresponding weight is added, so that not only can the ideal abrasion resistance be achieved, but also the adhesion of the passivation film can be ensured, and therefore, the material does not contain B 2 O 3 Compared with the high nickel-chromium alloy, the abrasion-resistant high nickel-chromium/B provided by the embodiment 2 O 3 Abrasion-resistant high nickel-chromium/B prepared by material preparation method 2 O 3 The abrasion resistance of the material can be improved by more than 2 times, and the cost is only increased by about 30-40%, so that the material has the advantage of obvious high cost performance.
In the hot press sintering step, the sintering pressure is: 30-100MPa, preferably 40-90MPa, more preferably 50-80MPa, more preferably 60-70MPa.
In the hot press sintering step, the heating parameters are as follows: the temperature is gradually raised to 300-360 ℃ (preferably 320-350 ℃, more preferably 330-340 ℃), the temperature raising time is 2-4 hours (preferably 2.2-3.6 hours, more preferably 2.5-3 hours, more preferably 2.6-2.8 hours), the temperature is further kept for 0.4-0.6 hours (preferably 0.45-0.58 ℃, more preferably 0.5-0.52 hours), the temperature is then gradually raised to 750-850 ℃ (preferably 760-830 ℃, more preferably 780-800 ℃), the temperature raising time is 1.5-2.5 hours (preferably 1.8-2.4 hours, more preferably 2-2.2 hours), the temperature is further kept for 0.8-1.2 hours (preferably 0.9-1.1 hours, more preferably 1-05 hours), the temperature is then gradually raised to 1100-1300 ℃ (preferably 1150-0 ℃ and more preferably 1200-1230 ℃), the temperature is then gradually raised to 1.5-2.5 hours (preferably 1.7-2.5 hours), the temperature raising time is further kept for 1.8-2.4 hours (preferably 1.8-2.2 hours), the temperature is further kept for 0.8-1.2 hours (preferably 1.8-1.2 hours), and the temperature is further kept for 1.8-1.2 hours (preferably 2.8-1.05 hours).
The Cr powder can be selected from Cr powder with granularity below 200 μm and purity above 99.5%; the Ni powder can be selected from Ni powder with particle size below 200 μm and purity above 99.5%. Specifically, the particle size of the Cr powder and the Ni powder may be preferably 150 μm or less, more preferably 50 μm or less; the purity of the Cr powder and the Ni powder may be preferably 99.8% or more, more preferably 99.9% or more, and still more preferably 99.99% or more.
In the first ball milling step, the ball milling time period may be set to 5 to 30 hours, preferably 10 to 25 hours, and further preferably 15 to 20 hours, so that the Cr powder and the Ni powder can be ground and mixed to a desired degree.
The above B powder can be selected from B powder with particle size below 100 μm and purity above 99%. Among them, the particle size of the powder B is preferably 80 μm or less, more preferably 50 μm or less, and still more preferably 30 μm or less; the purity of the powder B is preferably 99.5% or more, more preferably 99.9% or more.
In the secondary ball milling step, the ball milling time period may be set to 1 to 5 hours, preferably 2 to 4 hours, and more preferably 3 to 3.2 hours.
In the secondary ball milling step, the purity of the introduced oxygen can be set to be more than 99%, the flow is 0.1-0.5ml/min, the time is 1-10min, and the temperature is 30-100 ℃; wherein the purity of the introduced oxygen is preferably 99.5% or more, more preferably 99.8% or more; the flow rate is preferably 0.2 to 0.4ml/min, and more preferably 0.3 to 0.35ml/min; the time is preferably 2-7min, and more preferably 4-5min; the temperature is preferably 50 to 80℃and more preferably 60 to 90 ℃.
In the first ball milling step, the ball-to-material ratio in the ball milling tank may be set to a 1, wherein a has a value in the range of 9 to 11, preferably 10.
In the hot-press sintering step, the mixed powder is taken out of the tank, then is put into a graphite crucible, and the graphite crucible containing the mixed powder is put into a hot-press sintering furnace.
After the step of hot press sintering, a material taking step may be further included: high nickel chromium/B 2 O 3 Cooling the material to room temperature along with the furnace, and then taking out the high nickel chromium/B 2 O 3 A material.
The embodiment also provides an abrasion-resistant high nickel-chromium/B 2 O 3 Materials using the above-mentioned abrasion-resistant high nickel chromium/B 2 O 3 The material is prepared by a preparation method.
The embodiment also provides an abrasion-resistant high nickel-chromium/B 2 O 3 Application of material, abrasion-resistant high nickel-chromium/B 2 O 3 The material is applied to the surface of the boiler unit.
In summary, the present embodiment provides an abrasion resistant high nickel chromium/B 2 O 3 The material and the preparation method and application thereof have the beneficial effects that:
abrasion resistant high nickel chromium/B 2 O 3 The preparation process of the material is simpler, and the B powder is reacted with oxygen to generate B during ball milling 2 O 3 Higher purity, and is beneficial to improving the finally obtained high nickel-chromium/B 2 O 3 The abrasion resistance of the material is excellent, particularly to coal ash smoke; by controlling the weight of the B powder, not only the ideal abrasion resistance can be achieved, but also the adhesion of the passivation film can be ensured, thus the B powder does not contain 2 O 3 In the present example, abrasion-resistant high nickel chromium/B 2 O 3 The abrasion resistance of the material can be improved by more than 2 times, and the cost is only increased by about 30-40%, so that the material has the advantage of obvious high cost performance.
In summary, the embodiment of the invention provides an abrasion-resistant high nickel chromium/B 2 O 3 The material is suitable for boiler units.
To further illustrate the invention, the abrasion resistant high nickel chromium/B provided by the invention is described below in conjunction with the drawings and examples 2 O 3 The preparation process of (2) is described in more detail but they are not to be construed as limiting the scope of the invention.
Example 1
Step 1, weighing Cr powder and Ni powder with granularity of 200um and purity of 99.5 percent according to a molar ratio of 3:7, then loading the Cr powder and the Ni powder into a ball milling tank (ball material ratio: 10:1) capable of being vacuumized, vacuumizing, filling argon, and ball milling for 30 hours;
step 2, adding B powder with granularity of 100um and purity of 99 percent and weight of 5 percent of Cr and Ni mixed powder into a ball milling tank containing the mixed powder, and simultaneously introducing preheated oxygen (with purity of not less than 99 percent, flow rate of 0.5ml/min, time of 10min and temperature of 100 ℃), realizing ball milling mixing while introducing oxygen, wherein the ball milling time is 5 hours, and ensuring that B is obtained 2 O 3 Mixing with nickel-chromium powder uniformly, and cooling the ball milling tank to room temperature;
step 3, taking out the mixed powder from the tank without compacting, putting the mixed powder into a graphite crucible, and putting the graphite crucible containing the mixed powder into a hot-pressing sintering furnace at the pressure of 100MPa; heating parameters: gradually heating to 350 ℃, keeping the temperature at 350 ℃ for 4 hours and preserving the heat for 0.5 hour; then, gradually heating from 350 ℃ to 800 ℃ for 2 hours, and preserving heat for 1 hour; heating from 800 ℃ to 1300 ℃ for 2 hours, and preserving heat for 5 hours at 1300 ℃; finally cooling along with the furnace to finally obtain the high nickel-chromium/B 2 O 3 Material (as shown in figure 1).
Introducing SO at 700 deg.C 2 After 1 hour of wear test, high nickel chromium/B 2 O 3 Material sample and no B 2 O 3 The amount of oxidative wear volume loss of the high nichrome pattern is shown in table 1. As can be seen from the data in Table 1, the high nickel-chromium/B prepared in this example 2 O 3 The volume loss of the material is B-free 2 O 3 About 35% of the volume loss of the high nickel-chromium alloy.
TABLE 1
Example two
Step 1, weighing Cr powder and Ni powder with granularity of 50um and purity of 99.99 percent according to a molar ratio of 3:7, then loading the Cr powder and the Ni powder into a ball milling tank (ball material ratio: 10:1) capable of being vacuumized, vacuumizing, filling argon, and ball milling for 5 hours;
step 2, adding B powder with granularity of 50um and purity of 99.9 percent and weight of 0.5 percent of Cr and Ni mixed powder into a ball milling tank containing the mixed powder, and simultaneously introducing preheated oxygen (with purity of not less than 99 percent, flow rate of 0.1ml/min, time of 1min and temperature of 30 ℃), realizing ball milling and mixing while introducing oxygen, wherein the ball milling time is 1 hour, and ensuring that B is obtained 2 O 3 Mixing with nickel-chromium powder uniformly, and cooling the ball milling tank to room temperature;
step 3, taking out the mixed powder from the tank without compacting, putting the mixed powder into a graphite crucible, and putting the graphite crucible containing the mixed powder into a hot-pressing sintering furnace at the pressure of 30MPa; heating parameters: gradually heating to 350 ℃, heating for 2 hours, and preserving heat for 0.5 hour at 350 ℃; then, gradually heating from 350 ℃ to 800 ℃ for 2 hours, and preserving heat for 1 hour; heating from 800 ℃ to 1100 ℃, heating for 2 hours, and preserving heat for 2 hours at 1100 ℃; finally cooling along with the furnace to finally obtain the high nickel-chromium/B 2 O 3 A material.
Introducing SO at 700 deg.C 2 After 1 hour of wear test, high nickel chromium/B 2 O 3 Material sample and no B 2 O 3 The amount of oxidative wear volume loss of the high nichrome pattern is shown in table 2. As can be seen from the data in Table 2, the high nickel-chromium/B prepared in this example 2 O 3 The volume loss of the material is B-free 2 O 3 About 30% of the volume loss of the high nickel-chromium alloy.
TABLE 2
Example III
Step 1, weighing Cr powder and Ni powder with granularity of 150um and purity of more than 99.5 percent according to a molar ratio of 3:7, then loading the Cr powder and the Ni powder into a ball milling tank (ball material ratio: 10:1) capable of being vacuumized, vacuumizing, filling argon, and ball milling for 20 hours;
step 2, adding B powder with granularity of 100um and purity of 99 percent and weight of 2.5 percent of Cr and Ni mixed powder into the mixed powderAnd (2) simultaneously introducing preheated oxygen (the purity is not lower than 99%, the flow is 0.3ml/min, the time is 5min, the temperature is 50 ℃), realizing ball milling mixing while introducing oxygen, and the ball milling time is 3 hours, thereby ensuring that B is obtained 2 O 3 Mixing with nickel-chromium powder uniformly, and cooling the ball milling tank to room temperature;
step 3, taking out the mixed powder from the tank without compacting, putting the mixed powder into a graphite crucible, and putting the graphite crucible containing the mixed powder into a hot-pressing sintering furnace under the pressure of 50MPa; heating parameters: gradually heating to 350 ℃, keeping the temperature at 350 ℃ for 3 hours and preserving the heat for 0.5 hour; then, gradually heating from 350 ℃ to 800 ℃ for 2 hours, and preserving heat for 1 hour; heating from 800 ℃ to 1200 ℃ for 2 hours, and preserving heat for 3 hours at 1200 ℃; finally cooling along with the furnace to finally obtain the high nickel-chromium/B 2 O 3 A material.
Introducing SO at 700 deg.C 2 After 1 hour of wear test, high nickel chromium/B 2 O 3 Material sample and no B 2 O 3 The amount of oxidative wear volume loss of the high nichrome pattern is shown in table 3. As can be seen from the data in Table 3, the high nickel-chromium/B prepared in the third example 2 O 3 The volume loss of the material is B-free 2 O 3 About 39% of the volume loss of the high nichrome.
TABLE 3 Table 3
Example IV
Step 1, weighing Cr powder and Ni powder with granularity of 200um and purity of 99.5 percent according to a molar ratio of 3:7, then loading the Cr powder and the Ni powder into a ball milling tank (ball material ratio: 10:1) capable of being vacuumized, vacuumizing, filling argon, and ball milling for 25 hours;
step 2, adding B powder with granularity of 100um and purity of 99 percent and weight of 3 percent of Cr and Ni mixed powder into a ball milling tank containing the mixed powder, and simultaneously introducing preheated oxygen (with purity of not less than 99 percent, flow rate of 0.5ml/min, time of 7min and temperature of 100 ℃), realizing ball milling mixing while introducing oxygen, wherein the ball milling time is 3 hours, and ensuring that B is obtained 2 O 3 Mixing with nickel-chromium powder uniformly, and cooling the ball milling tank to room temperature;
step 3, taking out the mixed powder from the tank without compacting, putting the mixed powder into a graphite crucible, and putting the graphite crucible containing the mixed powder into a hot-pressing sintering furnace at the pressure of 70MPa; heating parameters: gradually heating to 350 ℃, keeping the temperature at 350 ℃ for 3 hours and preserving the heat for 0.5 hour; then, gradually heating from 350 ℃ to 800 ℃ for 2 hours, and preserving heat for 1 hour; heating from 800 ℃ to 1300 ℃ for 2 hours, and preserving heat for 2.5 hours at 1300 ℃; finally cooling along with the furnace to finally obtain the high nickel-chromium/B 2 O 3 A material.
Introducing SO at 700 deg.C 2 After 1 hour of wear test, high nickel chromium/B 2 O 3 Material sample and no B 2 O 3 The amount of oxidative wear volume loss of the high nichrome pattern is shown in table 4. As can be seen from the data in Table 4, the high nickel-chromium/B prepared in this example four 2 O 3 The volume loss of the material is B-free 2 O 3 About 47% of the volume loss of the high nichrome.
TABLE 4 Table 4
In summary, the embodiment of the invention provides the abrasion-resistant high nickel-chromium/B 2 O 3 The abrasion resistance of the material can be improved by more than 2 times, and the cost is only increased by about 30-40%, so that the material has the advantage of obvious high cost performance.
Finally, it is also noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. Abrasion-resistant high nickel-chromium/B 2 O 3 A method of preparing a material comprising:
first charging: weighing Cr powder and Ni powder according to a molar ratio a to b, and then filling the weighed Cr powder and Ni powder into a ball milling tank capable of being vacuumized, wherein the value range of a is 2.8-3.2, and the value range of b is 6.8-7.2;
ball milling for the first time: vacuumizing, filling inert gas, and performing ball milling;
and (3) secondary feeding: adding the B powder into a ball milling tank, wherein the weight ratio of the B powder to Cr and Ni mixed powder is 0.5-5%;
secondary ball milling: ball milling is carried out while preheated oxygen is introduced;
hot pressing and sintering: after the ball milling tank is cooled to room temperature, the mixed powder is taken out from the tank and put into a hot-press sintering furnace for hot-press sintering, thus obtaining the high nickel-chromium/B 2 O 3 A material.
2. The abrasion resistant high nickel chromium/B according to claim 1 2 O 3 The preparation method of the material is characterized in that in the hot-press sintering step, the sintering pressure is as follows: 30-100MPa; the heating parameters are as follows: gradually heating to 300-360 ℃ for 2-4 hours, then preserving heat for 0.4-0.6 hours, then gradually heating to 750-850 ℃ for 1.5-2.5 hours, then preserving heat for 0.8-1.2 hours, then gradually heating to 1100-1300 ℃ for 1.5-2.5 hours, and then preserving heat for 2-5 hours.
3. The abrasion resistant high nickel chromium/B according to claim 1 2 O 3 The preparation method of the material is characterized in that the Cr powderThe particle size is below 200 μm, and the purity is above 99.5%;
and/or the Ni powder has a particle size of 200 μm or less and a purity of 99.5% or more;
and/or the particle size of the powder B is less than 100 mu m, and the purity is more than 99%.
4. An abrasion resistant high nickel chromium/B according to claim 3 2 O 3 The preparation method of the material is characterized in that in the first ball milling step, the ball milling time is 5-30 hours;
and/or in the secondary ball milling step, the ball milling time is 1-5 hours.
5. The abrasion resistant high nickel chromium/B according to claim 1 2 O 3 The preparation method of the material is characterized in that in the secondary ball milling step, the purity of the introduced oxygen is more than 99%, the flow is 0.1-0.5ml/min, the time is 1-10min, and the temperature is 30-100 ℃.
6. The abrasion resistant high nickel chromium/B according to claim 1 2 O 3 The preparation method of the material is characterized in that in the first ball milling step, the ball-to-material ratio is a 1, wherein the value range of a is 9-11.
7. The abrasion resistant high nickel chromium/B according to claim 1 2 O 3 The preparation method of the material is characterized in that in the hot-press sintering step, the mixed powder is taken out of a tank, then the mixed powder is put into a graphite crucible, and the graphite crucible containing the mixed powder is put into a hot-press sintering furnace.
8. An abrasion resistant high nickel chromium/B according to any of claims 1 to 7 2 O 3 The preparation method of the material is characterized in that after the hot-pressed sintering step, the preparation method further comprises the steps of taking: making the high nickel-chromium/B 2 O 3 Cooling the material to room temperature along with the furnace, and then taking out the high nickel-chromium/B 2 O 3 A material.
9. Abrasion-resistant high nickel-chromium/B 2 O 3 A material characterized in that the abrasion-resistant high nickel-chromium/B according to any one of claims 1 to 8 is used 2 O 3 The material is prepared by a preparation method.
10. An abrasion resistant high nickel chromium/B as claimed in claim 9 2 O 3 The use of a material, characterized in that the abrasion-resistant high nickel chromium/B 2 O 3 The material is applied to the surface of the boiler unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310676629.7A CN116397123B (en) | 2023-06-08 | 2023-06-08 | Abrasion resistant high nickel chromium/B 2 O 3 Material, preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310676629.7A CN116397123B (en) | 2023-06-08 | 2023-06-08 | Abrasion resistant high nickel chromium/B 2 O 3 Material, preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116397123A CN116397123A (en) | 2023-07-07 |
| CN116397123B true CN116397123B (en) | 2023-09-08 |
Family
ID=87020267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310676629.7A Active CN116397123B (en) | 2023-06-08 | 2023-06-08 | Abrasion resistant high nickel chromium/B 2 O 3 Material, preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116397123B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11323528A (en) * | 1998-05-12 | 1999-11-26 | Ishikawajima Harima Heavy Ind Co Ltd | Method for improving wear resistance of nickel-chromium alloy |
| CN103420373A (en) * | 2013-08-01 | 2013-12-04 | 西安交通大学 | Preparation method for high temperature corrosion resistant Cr23C6 cermet |
| CN105951386A (en) * | 2016-07-01 | 2016-09-21 | 卡贝科技股份有限公司 | Multifunctional intelligent clothes airing machine |
| RU2618027C1 (en) * | 2016-03-28 | 2017-05-02 | Акционерное общество "Научно-производственное объединение "Центральный научно-исследовательский институт технологии машиностроения" АО "НПО "ЦНИИТМАШ" | Pastes for wear-resistant overlaying and wear-resistant coating |
| CN106756997A (en) * | 2016-12-07 | 2017-05-31 | 山东大学苏州研究院 | A kind of ceramic reinforced Metal Substrate laser cladding layer and its preparation technology |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6855891B2 (en) * | 2017-04-13 | 2021-04-07 | トヨタ自動車株式会社 | Thermal spraying powder and method for forming a thermal spray coating using this |
-
2023
- 2023-06-08 CN CN202310676629.7A patent/CN116397123B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11323528A (en) * | 1998-05-12 | 1999-11-26 | Ishikawajima Harima Heavy Ind Co Ltd | Method for improving wear resistance of nickel-chromium alloy |
| CN103420373A (en) * | 2013-08-01 | 2013-12-04 | 西安交通大学 | Preparation method for high temperature corrosion resistant Cr23C6 cermet |
| RU2618027C1 (en) * | 2016-03-28 | 2017-05-02 | Акционерное общество "Научно-производственное объединение "Центральный научно-исследовательский институт технологии машиностроения" АО "НПО "ЦНИИТМАШ" | Pastes for wear-resistant overlaying and wear-resistant coating |
| CN105951386A (en) * | 2016-07-01 | 2016-09-21 | 卡贝科技股份有限公司 | Multifunctional intelligent clothes airing machine |
| CN106756997A (en) * | 2016-12-07 | 2017-05-31 | 山东大学苏州研究院 | A kind of ceramic reinforced Metal Substrate laser cladding layer and its preparation technology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116397123A (en) | 2023-07-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wang et al. | Rapid synthesis and sintering of metals from powders | |
| CN108486398A (en) | A kind of preparation method of W-Co carbide hard metals | |
| CN114605154B (en) | High-entropy ceramic material based on metal pre-alloying and preparation method thereof | |
| CN110863153B (en) | Preparation method of FeCrAl-based ODS alloy material for advanced nuclear fuel element cladding | |
| CN106319288B (en) | Be introduced directly into strengthens nickel-base composite material and its preparation method and application jointly with In-situ Synthesis TiC Particle | |
| CN113122747B (en) | Cu- (WC-Y) with excellent mechanical property2O3) Method for preparing composite material | |
| CN110306074B (en) | Discharge plasma sintering preparation method of CERMET fuel pellet | |
| CN116397123B (en) | Abrasion resistant high nickel chromium/B 2 O 3 Material, preparation method and application thereof | |
| CN114774727B (en) | Preparation method of nano zirconium dioxide reinforced NbMoTaW refractory high-entropy alloy | |
| CN101532108B (en) | Molybdenum alloy manufacturing method | |
| CN100371300C (en) | Method of thermo press preparing high purity aluminium titanium carbide block material | |
| CN109053191A (en) | A kind of soap-free emulsion polymeization phase base titanium carbonitride and preparation method thereof | |
| CN105543535A (en) | Al4SiC4 and Cr cooperative reinforcement net-shaped/globular copper material and preparation method | |
| CN108034875A (en) | A kind of Mo-Si-B alloys of rare earth doped oxide and preparation method thereof | |
| CN100450970C (en) | Atmospheric synthetic method for high purity titamum aluminum carbide ceramic powder | |
| Fielding et al. | Gas-cooled fast reactor fuel fabrication | |
| GB2257436A (en) | Bearings | |
| CN102392149B (en) | Method for microwave sintering preparation of nano-metric rare earth modified steel-bonded hard alloy | |
| CN112898025A (en) | Method for preparing vanadium boride ultrafine powder by carbon-thermal boron-thermal method | |
| CN112548107A (en) | Preparation method of carbon nano tube coated oxide dispersion strengthened steel composite powder | |
| JP2003167324A (en) | Metal silicide sputtering target and method for manufacturing the same | |
| CN104446391B (en) | High B values high resistivity negative temperature coefficient heat-sensitive resistance material and preparation method thereof | |
| CN116217236B (en) | Preparation method of uranium-niobium-carbon-nitrogen fuel pellets | |
| CN113308644B (en) | Iron-chromium-aluminum alloy material for improving high-temperature comprehensive performance by using vanadium-rare earth synergy and preparation method thereof | |
| CN103468991B (en) | Method for increasing oxidation resistance and high-temperature mechanical performance of Cr23C6 compound |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |