CN106478106A - Prepare the manufacture method of speculum silicon carbide granulating powder - Google Patents
Prepare the manufacture method of speculum silicon carbide granulating powder Download PDFInfo
- Publication number
- CN106478106A CN106478106A CN201610881692.4A CN201610881692A CN106478106A CN 106478106 A CN106478106 A CN 106478106A CN 201610881692 A CN201610881692 A CN 201610881692A CN 106478106 A CN106478106 A CN 106478106A
- Authority
- CN
- China
- Prior art keywords
- powder
- silicon carbide
- manufacture method
- carbide granulating
- carborundum
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/6261—Milling
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
- C04B35/62655—Drying, e.g. freeze-drying, spray-drying, microwave or supercritical drying
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
Abstract
The present invention provides a kind of manufacture method for preparing speculum silicon carbide granulating powder.Contain carborundum powder, organic binder bond, sintering aid etc. in the pelletizing, and bond to be formed by binding agent by multiple silicon-carbide particles.With deionized water as solvent, sequentially add carborundum powder, sintering aid, dispersant, plasticiser, binding agent, defrother and be stirred, after stirring, silicon carbide granulating powder is obtained through froth in vacuum, spray drying.The present invention can prepare the pelletizing of sphericity, good fluidity by the binding agent of interpolation proper proportion, dispersant, plasticiser；The generation of hollow ball shape particle is avoided using defoamer and froth in vacuum flow process, effectively improves silicon carbide mirror suface processing quality.
Description
Technical field
The invention belongs to technical field of ceramic material, more particularly to a kind of manufacture for preparing speculum silicon carbide granulating powder
Method.
Background technology
Speculum is large-scale space telescope, large-scale ground telescope, explorer satellite, reconnaissance satellite, meteorological satellite, high energy
The important component part of laser weapon, laser radar system and High Resolution Space Camera optical system.Speculum prepares material
Require：Heat endurance is good, specific stiffness is high, the resolution of diffraction with electromagnetic wave, low scattered power, can process loss of weight knot
Structure.Carbofrax material in addition to the physical property of speculum requirement is met, compact silicon carbide ceramic is ground, polishing, energy after plated film
The resolution of diffraction of visible-range is enough reached, and therefore carborundum is the preferred material for preparing speculum at present.Nothing pressure is solid
Phase sintering is a kind of conventional process for preparing silicon carbide mirror at present, can prepare high-compactness, high reflection using the technique
The silicon carbide mirror of rate.
Nothing pressure solid-phase sintered silicon carbide pelletizing occur hollow ball shape particle in preparation process, easily, this be due to pottery
Slip produces bubble in whipping process, and during mist projection granulating, binding agent parcel bubble is produced.During ceramic post sintering, hollow ball
Aggregation at shape particle due to binding agent can produce gas hole defect, and this will have a strong impact on mirror surface crudy.
Content of the invention
It is an object of the invention to avoiding the generation of hollow ball shape particle in silicon carbide granulating powder preparation process.There is provided a kind of
The granulation powder, preparation method thereof of great surface quality silicon carbide mirror can be prepared.
A kind of manufacture method for preparing speculum silicon carbide granulating powder, comprises the following steps, with deionized water as solvent,
Sequentially add carborundum powder, sintering aid, dispersant, plasticiser, binding agent, defoamer to be stirred, through true after stirring
Empty de-bubble, spray drying obtain silicon carbide granulating powder.
Further, described carborundum powder is 1 μm of α-SiC, powder D50 ＜, purity ＞ 98%.
Further, described sintering aid is B4One or more in C, B or BN are constituted with C, and its addition is carbon
The 1%-10% of SiClx silty amount, is primarily to facilitate the sintering of silicon carbide ceramics, preferably B4The proportioning of C, B or BN and C is (1-
10):(10-1), more preferably (1-6):(6-1), optimum is 4:1.
Further, described dispersant be methyl anyl alcohol, tetramethyl hydrogenation ammonium, the one kind in ethylaminoethanol, its interpolation
The 0.1%-2% for carborundum powder quality is measured, is conducive to silicon carbide powder to be dispersed in solution.
Further, the plasticiser is repefral, di (2-ethylhexyl) phthalate, phthalic acid
One kind in dioctyl ester, its addition are the 1%-15% of carborundum powder quality, increase the plasticity of silicon carbide powder, contribute to powder
Body and the combination of binding agent.
Further, the binding agent be polyvinyl alcohol, polyethylene glycol, the one kind in polyvinyl butyral resin, its interpolation
The 2%-20% for carborundum powder quality is measured, is played during mist projection granulating and powder adhesion spheroiding is acted on.
Further, the defoamer is n-octyl alcohol, polyoxyethylene polyoxypropylene pentaerythrite ether, polyoxyethylene polyoxy third
One kind in alcohol amidogen ether, its addition are the 0.01%-1% of carborundum powder quality, for eliminating the bubble in slurry.
Further, the froth in vacuum process is comprised the following steps：First the ceramic slurry for stirring is placed in very
In empty defoaming machine, vacuum degree control is taken out after keeping 0.5-2 hour in 5-50Pa.
Further, the spray-drying process is comprised the following steps：Adjustment inlet temperature is 220-280 DEG C, outlet temperature
Spend for 75-95 DEG C, atomizer set of frequency is 150-180HZ, air exhauster set of frequency is 40-50HZ, can according to above-mentioned setting
Ensure that moisture controls in 0.7%-1.2% in granulation powder, is conducive to powder dry-pressing formed.
Further, comprise the following steps：1) batch mixing：Appropriate carborundum mill is added to be situated between in vertical mixing mill, carborundum grinds
It is (1.5-3) to be situated between with ceramic slurry mass ratio:1；According to deionized water and sic powder mass ratio (1.2-2):1 add go from
Sub- water and carborundum powder；On the basis of carborundum powder, sintering aid 1%-10%, dispersant 0.1%-2%, defoamer is added
0.01%-1%, starts stirring after mixing.After stirring 1 hour, plasticiser 1%-15% is added, add after continuing stirring 0.5 hour
Enter binding agent 2%-20%, after being stirred for 1 hour, extract slurry out.2) froth in vacuum：The ceramic slurry for stirring is placed in very
In empty defoaming machine, vacuum degree control is taken out after keeping 0.5-2 hour in 5-50Pa.3) it is spray-dried：Adjustment inlet temperature exists
220-280 DEG C, at 75-95 DEG C, in 150-180HZ, air exhauster set of frequency is 40- to atomizer set of frequency to outlet temperature
50HZ.
Further, on the basis of carborundum powder, sintering aid 3%-8%, dispersant 0.5%-1.2%, froth breaking are added
Agent 0.03%-0.6%, starts stirring after mixing.After stirring 1 hour, plasticiser 3%-9.2% is added, continue stirring 0.5 hour
Add binding agent 8%-12% afterwards, after being stirred for 1 hour, extract slurry out.
Further, the silicon carbide granulating powder that a kind of preparation method described above is prepared is provided.
The present invention passes through to add the binding agent of proper proportion, dispersant, plasticiser, defoamer, and froth in vacuum process,
The generation of hollow ball shape particle in silicon carbide granulating powder preparation process is avoided, effectively increases silicon carbide mirror Surface Machining matter
Amount.
Using the method for the invention prepare pelletizing sphericity height (see Fig. 1), even particle size distribution, good fluidity,
Hollow ball shape particle produces few, it is adaptable to the silicon carbide ceramic components that suface processing quality has high demands.Carbonization prepared by the present invention
Silicon pelletizing Hall flow velocity is 2.5s/g, angle of repose：25 ° -26 °, apparent density：0.7-0.8g/cm3, pelletizing D50 are at 55 μm
Left and right.
Other features and advantages of the present invention will be illustrated in the following description, also, partial change from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can pass through in the explanation that is write
In book, claims and accompanying drawing, specifically noted structure is realizing and obtain.
Description of the drawings
Accompanying drawing is only used for illustrating the purpose of specific embodiment, and is not considered as limitation of the present invention, in whole accompanying drawing
In, Fig. 1 is silicon carbide granulating powder projection print.
Specific embodiment
Below in conjunction with the accompanying drawings specifically describing the preferred embodiments of the present invention, wherein, accompanying drawing constitutes the application part, and
It is used for together with embodiments of the present invention explaining the principle of the present invention.
Embodiment 1：
A kind of manufacture method for preparing speculum silicon carbide granulating powder, comprises the following steps：
1) batch mixing：Appropriate silicon carbide ceramics mill is added to be situated between in vertical mixing mill, silicon carbide ceramics mill is situated between and ceramic slurry matter
Amount is than being 2:1；According to deionized water and sic powder mass ratio 1.6:1 adds deionized water and carborundum powder；With carborundum
On the basis of powder, B is added4Mixture 5%, the tetramethyl hydrogenation ammonium 1% of C, B and C, n-octyl alcohol 0.1%, start stirring after mixing.
After stirring 1 hour, di (2-ethylhexyl) phthalate 6% is added, polyethylene glycol 10% after continuing stirring 0.5 hour, is added, then
Stirring extracted slurry out after 1 hour.
2) froth in vacuum：The ceramic slurry for stirring is placed in froth in vacuum machine, vacuum degree control is kept in 20Pa
Take out after 1 hour.
3) it is spray-dried：Adjustment inlet temperature at 250 DEG C, outlet temperature at 90 DEG C, atomizer set of frequency in 160HZ,
Air exhauster set of frequency is 45HZ.
According to above-mentioned preparation process, pelletizing sphericity height, even particle size distribution, good fluidity, hollow ball shape is obtained
Particle produces few silicon carbide granulating powder.The silicon carbide granulating powder Hall flow velocity of preparation is 2.5s/g, angle of repose：25 ° -26 °, pine
Dress density：0.7-0.8g/cm3, pelletizing D50 are at 55 μm or so.
Embodiment 2：
A kind of manufacture method for preparing speculum silicon carbide granulating powder, comprises the following steps：
1) batch mixing：Appropriate silicon carbide ceramics mill is added to be situated between in vertical mixing mill, silicon carbide ceramics mill is situated between and ceramic slurry matter
Amount is than being 2.5:1；According to deionized water and sic powder mass ratio 1.8:1 adds deionized water and carborundum powder；With carbonization
On the basis of silica flour, B is added4The mixture 6.8% of C, B and C, ethylaminoethanol 1.1%, polyoxyethylene polyoxypropylene pentaerythrite
Ether 0.25%, starts stirring after mixing.After stirring 1 hour, dioctyl phthalate 12% is added, continue stirring 0.5 hour
Add polyvinyl butyral resin 13.5% afterwards, after being stirred for 1 hour, extract slurry out.
2) froth in vacuum：The ceramic slurry for stirring is placed in froth in vacuum machine, vacuum degree control is kept in 10Pa
Take out after 2 hours.
3) it is spray-dried：Adjustment inlet temperature at 230 DEG C, outlet temperature at 85 DEG C, atomizer set of frequency in 170HZ,
Air exhauster set of frequency is 40HZ.
According to above-mentioned preparation process, pelletizing sphericity height, even particle size distribution, good fluidity, hollow ball shape is obtained
Particle produces few silicon carbide granulating powder.The silicon carbide granulating powder Hall flow velocity of preparation is 2.5s/g, angle of repose：25 ° -26 °, pine
Dress density：0.7-0.8g/cm3, pelletizing D50 are at 55 μm or so.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in,
Should all be included within the scope of the present invention.
Claims (10)
1. a kind of manufacture method for preparing speculum silicon carbide granulating powder, it is characterised in that：Comprise the following steps, with deionization
Water is solvent, sequentially adds carborundum powder, sintering aid, dispersant, plasticiser, binding agent, defoamer and is stirred, and stirring is all
Silicon carbide granulating powder is obtained through froth in vacuum, spray drying after even.
2. the manufacture method of silicon carbide granulating powder as claimed in claim 1, it is characterised in that described carborundum powder be α-
1 μm of SiC, powder D50 ＜, purity ＞ 98%.
3. the manufacture method of silicon carbide granulating powder as claimed in claim 1 or 2, it is characterised in that described sintering aid is
B4One or more in C, B or BN are constituted with C, and its addition is the 1%-10% of carborundum powder quality.
4. the manufacture method of silicon carbide granulating powder as claimed in claim 3, it is characterised in that described dispersant is methylpent
One kind in alcohol, tetramethyl hydrogenation ammonium, ethylaminoethanol, its addition is the 0.1%-2% of carborundum powder quality.
5. the manufacture method of silicon carbide granulating powder as claimed in claim 4, it is characterised in that the plasticiser is O-phthalic
One kind in dimethyl phthalate, di (2-ethylhexyl) phthalate, dioctyl phthalate, its addition are carborundum powder quality
1%-15%.
6. the manufacture method of silicon carbide granulating powder as claimed in claim 5, it is characterised in that the binding agent is polyethylene
One kind in alcohol, polyethylene glycol, polyvinyl butyral resin, its addition are the 2%-20% of carborundum powder quality.
7. the manufacture method of silicon carbide granulating powder as claimed in claim 6, it is characterised in that the defoamer is n-octyl alcohol,
One kind in polyoxyethylene polyoxypropylene pentaerythrite ether, polyoxyethylene polyoxy propyl alcohol amidogen ether, its addition are carborundum silty
The 0.01%-1% of amount.
8. the manufacture method of silicon carbide granulating powder as claimed in claim 7, it is characterised in that the froth in vacuum process includes
Following steps：First the ceramic slurry for stirring is placed in froth in vacuum machine, vacuum degree control keeps 0.5- in 5-50Pa
Take out after 2 hours.
9. the manufacture method of silicon carbide granulating powder as claimed in claim 8, it is characterised in that the spray-drying process includes
Following steps：Adjustment inlet temperature is 220-280 DEG C, and outlet temperature is 75-95 DEG C, and atomizer set of frequency is 150-180HZ,
Air exhauster set of frequency is 40-50HZ, can ensure that moisture controls in 0.7%- in granulation powder according to above-mentioned setting
1.2%, be conducive to powder dry-pressing formed.
10. the silicon carbide granulating powder that the preparation method as described in claim 1-9 is prepared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610881692.4A CN106478106A (en) | 2016-10-09 | 2016-10-09 | Prepare the manufacture method of speculum silicon carbide granulating powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610881692.4A CN106478106A (en) | 2016-10-09 | 2016-10-09 | Prepare the manufacture method of speculum silicon carbide granulating powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106478106A true CN106478106A (en) | 2017-03-08 |
Family
ID=58269176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610881692.4A Pending CN106478106A (en) | 2016-10-09 | 2016-10-09 | Prepare the manufacture method of speculum silicon carbide granulating powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106478106A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107324338A (en) * | 2017-07-24 | 2017-11-07 | 南京施密特光学仪器有限公司 | A kind of speculum silicon carbide powder and preparation method thereof |
| CN110483001A (en) * | 2019-08-19 | 2019-11-22 | 扬州霞光光学仪器有限公司 | Silicon carbide optical frames and preparation method thereof |
| CN110526720A (en) * | 2019-09-06 | 2019-12-03 | 宁波伏尔肯科技股份有限公司 | A kind of preparation method of stratiform complex phase ceramic |
| CN113371713A (en) * | 2021-07-30 | 2021-09-10 | 浙江吉成新材股份有限公司 | Boron carbide submicron powder and preparation method thereof |
| CN115745619A (en) * | 2022-11-23 | 2023-03-07 | 广东昊陶科技有限公司 | Silicon carbide composite powder and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2939297B2 (en) * | 1990-04-23 | 1999-08-25 | 住友大阪セメント株式会社 | Laser reflecting mirror and method of manufacturing the same |
| CN1364746A (en) * | 2001-04-28 | 2002-08-21 | 中国科学院长春光学精密机械与物理研究所 | Forming process for silicon carbide reflector blank and expansion and contraction mold |
| CN104211407A (en) * | 2014-09-05 | 2014-12-17 | 中国钢研科技集团有限公司 | Process for forming large-size complex-shaped silicon carbide ceramic biscuit |
| CN105541336A (en) * | 2015-12-28 | 2016-05-04 | 中国人民解放军总后勤部军需装备研究所 | Boron carbide/silicon carbide ceramic entire board and preparation method and application thereof |
-
2016
- 2016-10-09 CN CN201610881692.4A patent/CN106478106A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2939297B2 (en) * | 1990-04-23 | 1999-08-25 | 住友大阪セメント株式会社 | Laser reflecting mirror and method of manufacturing the same |
| CN1364746A (en) * | 2001-04-28 | 2002-08-21 | 中国科学院长春光学精密机械与物理研究所 | Forming process for silicon carbide reflector blank and expansion and contraction mold |
| CN104211407A (en) * | 2014-09-05 | 2014-12-17 | 中国钢研科技集团有限公司 | Process for forming large-size complex-shaped silicon carbide ceramic biscuit |
| CN105541336A (en) * | 2015-12-28 | 2016-05-04 | 中国人民解放军总后勤部军需装备研究所 | Boron carbide/silicon carbide ceramic entire board and preparation method and application thereof |
Non-Patent Citations (2)
| Title |
|---|
| 傅宪辉等: "喷雾造粒中形成的各种颗粒形貌和结构", 《中国粉体技术》 * |
| 陈健等: "不同含量聚乙二醇对碳化硅喷雾造粒的影响", 《材料科学与工程学报》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107324338A (en) * | 2017-07-24 | 2017-11-07 | 南京施密特光学仪器有限公司 | A kind of speculum silicon carbide powder and preparation method thereof |
| CN110483001A (en) * | 2019-08-19 | 2019-11-22 | 扬州霞光光学仪器有限公司 | Silicon carbide optical frames and preparation method thereof |
| CN110526720A (en) * | 2019-09-06 | 2019-12-03 | 宁波伏尔肯科技股份有限公司 | A kind of preparation method of stratiform complex phase ceramic |
| CN113371713A (en) * | 2021-07-30 | 2021-09-10 | 浙江吉成新材股份有限公司 | Boron carbide submicron powder and preparation method thereof |
| CN115745619A (en) * | 2022-11-23 | 2023-03-07 | 广东昊陶科技有限公司 | Silicon carbide composite powder and preparation method thereof |
| CN115745619B (en) * | 2022-11-23 | 2023-11-17 | 广东昊陶科技有限公司 | Silicon carbide composite powder and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106478106A (en) | Prepare the manufacture method of speculum silicon carbide granulating powder | |
| JP7329878B2 (en) | Silicon nitride, ceramic slurry and preparation method | |
| CN111747756B (en) | Nitride ceramic tape-casting slurry and nitride ceramic substrate prepared from same | |
| CN103382128B (en) | Ceramic filter core containing cocoanut-shell activated carbon and preparation method thereof | |
| JP5750060B2 (en) | Ceramic cylindrical sputtering target material and manufacturing method thereof | |
| KR101729054B1 (en) | Alumina graula by spray-drying and manufacturing method thereof | |
| CN108911753A (en) | A kind of high tenacity pressureless sintering boron carbide ceramics preparation method | |
| CN113149662B (en) | Preparation method and application of high-thermal-conductivity silicon nitride ceramic casting film | |
| CN105503191A (en) | Method for preparing boron carbide spray granulation powder | |
| CN111470522B (en) | Spherical alumina and preparation method and application thereof | |
| CN109326401B (en) | Preparation process of nano zinc oxide composite powder varistor | |
| JP2011093729A (en) | Method for producing ito sintered compact, and method for producing ito sputtering target | |
| CN113716607A (en) | Method for preparing rare earth tantalate hollow sphere powder by centrifugal spray granulation method | |
| JP4961322B2 (en) | Alumina substrate for zeolite membrane and method for producing the same | |
| JP2017100937A (en) | Aluminum nitride sintered body and manufacturing method therefor | |
| CN104318974A (en) | Aluminum conductive paste used for crystalline silicon solar cell and preparation method of aluminum conductive paste | |
| JP5784849B2 (en) | Ceramic cylindrical sputtering target material and manufacturing method thereof | |
| CN115093201B (en) | Method for preparing ceramic slurry by combining sand mill and ball mill | |
| CN100412033C (en) | Preparing process of great size energy-storing dielectric ceramic | |
| CN105622102A (en) | Pseudo-boron carbide phase-silicon carbide or pseudo-boron carbide phase-silicon carbide-boron carbide complex-phase ceramic material and preparation method thereof | |
| JP6062912B2 (en) | Aluminum nitride sintered body and manufacturing method thereof | |
| CN109111232A (en) | A kind of Spray granulation method of silicon carbide powder | |
| CN114133253A (en) | Alumina granulation powder, preparation method thereof and ceramic component | |
| CN112226720A (en) | Spray granulation preparation method of metal-ceramic composite powder suitable for atmospheric plasma spraying | |
| JP2021172556A (en) | Aluminum nitride sintered compact and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: He Zhiyong Inventor after: Zhang Qifu Inventor after: Wang Xiaobo Inventor after: Qianfenling Inventor after: Wang Feng Inventor before: He Zhiyong Inventor before: Zhang Qifu Inventor before: Wang Xiaobo Inventor before: Qianfenling Inventor before: Wang Feng |
|
| CB03 | Change of inventor or designer information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170308 |
|
| RJ01 | Rejection of invention patent application after publication |