CN104308956A - Ceramic green body with low shrinking percentage and production method thereof - Google Patents
Ceramic green body with low shrinking percentage and production method thereof Download PDFInfo
- Publication number
- CN104308956A CN104308956A CN201410512286.1A CN201410512286A CN104308956A CN 104308956 A CN104308956 A CN 104308956A CN 201410512286 A CN201410512286 A CN 201410512286A CN 104308956 A CN104308956 A CN 104308956A
- Authority
- CN
- China
- Prior art keywords
- ceramic
- raw material
- weight
- green body
- ceramic green
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/003—Pressing by means acting upon the material via flexible mould wall parts, e.g. by means of inflatable cores, isostatic presses
-
- 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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention relates to a ceramic green body with low shrinking percentage and a production method thereof, belonging to the technical field of ceramic production. The production method comprises the steps of measuring 92 to 95 parts by weight of aluminum oxide, 1 to 3 parts by weight of silicon oxide, 1 to 2 parts by weight of calcium carbonate, 0.5 to 1.5 parts by weight of kaolin and 1.5 to 2.5 parts by weight of zirconium silicate, making the mixture into slurry on a ball mill, granulating, homogenizing and screening the mixture, machining the mixed slurry on a machine tool by adopting an isostatic pressing method to form a ceramic green body, wherein the density of the prepared ceramic green body is 3.69 to 3.72g/cm<3>, and the shrinking percentage of the ceramic green body after being sintered for 3 hours at the high temperature of 1550 DEG C is 7.3 to 7.5 percent. The production steps are simple, the zirconium silicate is added in the raw material, so that the friction force in the molding process of the ceramic powder can be reduced, and the density of the ceramic green body is more uniform; the shrinking percentage of the ceramic green body after being sintered at the high temperature is low, and the prepared ceramic green body is suitable for being made into a metallic ceramic tube shell for a vacuum switch tube.
Description
Technical field
The present invention relates to a kind of production method of ceramic idiosome, be specifically related to a kind of production method of ceramic idiosome of low-shrinkage, belong to technical field of ceramic production.
Background technology
Ceramic is by dusty material is processed into certain state according to ceramic method for densifying own, the pressure method suitable with product is adopted to be pressurizeed, then it is sintered and formed, therefore ceramic material completes the intensity of the material after dry process after the intensity, pressurization of pressure period, contraction in the contraction of dry run and sintering process, and these characteristics of the softening sex change caused of material in sintering process all directly affect the quality of ceramic.The field of applications in ceramics is very extensive, but the requirement of the characteristic of the ceramic of different field application is also different.Produce in vacuum switch effective metallized ceramic shell idiosome and can use ceramic, the electric arc of the effective metallized ceramic shell of vacuum switch by producing when the superior isolation of vacuum extinguishes forceful electric power break-make in pipe, accident and unexpected generation can be avoided, have a wide range of applications in the distribution system such as electric power, metallurgy, therefore higher to the ceramic idiosome performance requirement needed, need the ceramic idiosome shrinkage factor of preparation less, density is comparatively even, but the ceramic idiosome sintering post-shrinkage ratio size of producing at present is about 16% and the Density Distribution of ceramic idiosome is uneven.In the larger use of shrinkage factor of pottery idiosome, deformation of products is more serious, as: bore twisted not circle, geometry have irregular change etc., and these will directly affect the service property (quality) of the effective metallized ceramic shell of vacuum switch.
Summary of the invention
It is high that the ceramic idiosome that the object of the invention is to produce to solve prior art sinters post-shrinkage ratio, the shortcoming of Density Distribution inequality, and provide a kind of step simple low-shrinkage pottery idiosome production method, the ceramic idiosome shrinkage factor of production is low, even density.
The present invention adopts following technical scheme: a kind of production method of ceramic idiosome of low-shrinkage, comprises the steps:
(1) raw material ball milling: pour the raw material of 92 ~ 95 parts by weight of alumina, 1 ~ 3 weight portion silica, 1 ~ 2 weight parts of calcium carbonate, 0.5 ~ 1.5 parts by weight kaolin clay, 1.5 ~ 2.5 weight portion zirconium silicates into ball mill, in raw material and ball mill, the mass ratio of ballstone is 3 ~ 5:1, ball milling 22 ~ 24 hours, drum's speed of rotation 30 ~ 33r/min, obtains the slurry of viscosity 6010 ~ 6020mpa.s;
(2) granulation: the slurry after ball milling is added centrifugal atomizer entrance, sprayer nozzle rotates with the frequency of 16 ~ 18 Hz/RPM, and the powder particle size obtained is 95 ~ 230 μm;
(3) homogenize: the powder after granulation is put into homogenization machine and stir 25 ~ 35min, homogenization machine rotating speed 12 ~ 15r/min, the charging aperture of homogenization machine and discharging opening are provided with permanent bar magnet can clear up the impurity such as the oxide of iron in powder and iron;
(4) screen: the powder after homogenize is first through 80 ~ 90 object sieves and then through 115 ~ 130 object sieve screenings, and the powder particle size size obtained is 120 ~ 180 μm;
(5) shaping: to use isostatic pressing method shaping, the powder after screening is placed in mould, then mould is put into isostatic pressing machine, progressively pressurizeed by pressure charging system, make the Stress control of isostatic pressing machine at 220 ~ 240Mpa, obtain ceramic idiosome, operating environment temperature keeps 22 ~ 24 DEG C;
(6) Vehicle Processing: utilize lathe that ceramic idiosome is made required shape.
Further, add binding agent PVA during described step (1) Raw ball milling, softening agent ethylene glycol, grinding aid ammonium coagulate acrylates, the addition of described binding agent PVA is 5 ~ 6% of raw material gross mass, the addition of described softening agent ethylene glycol be raw material gross mass 1 ~ 1.5%, the described grinding aid ammonium addition of coagulating acrylates is 0.5 ~ 1% of raw material gross mass.
Further, the ceramic green density size adopting this kind to produce is 3.69 ~ 3.72g/cm3, is 7.3 ~ 7.5% through the shrinkage factor of 1550 DEG C of high temperature sinterings after 3 hours.
Production stage of the present invention is simple, adds zirconium silicate in the feed, reduces the frictional force of ceramic powder in forming process, make the density of ceramic idiosome evenly; Compared to traditional dry-pressing, injection moulding by two-way or unidirectional applying pressure, adopt iso-static pressure shaping machine by liquid pressure transmission, make each surface of ceramic idiosome receive equal pressure, ceramic green density uniformity is high, and the ceramic idiosome in the present invention is low through high temperature sintering post-shrinkage ratio.
Accompanying drawing explanation
Fig. 1 be in the present invention sintering temperature to the influence curve of ceramic green density.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further illustrated.
embodiment one:
A production method for the ceramic idiosome of low-shrinkage, comprises the steps:
(1) raw material ball milling
Pour the raw material of 95 parts by weight of alumina, 1 weight portion silica, 1.5 weight parts of calcium carbonate, 0.5 parts by weight kaolin clay, 1.5 weight portion zirconium silicates into ball mill, in raw material and ball mill, the mass ratio of ballstone is 3:1, add the binding agent PVA of raw material gross mass 5% simultaneously, the softening agent ethylene glycol of raw material gross mass 1%, the grinding aid ammonium of raw material gross mass 1% coagulate acrylates, drum's speed of rotation 30r/min, ball milling 23.5 hours, obtains the slurry of viscosity 6010mpa.s;
(2) granulation
Slurry is added centrifugal atomizer entrance, sprayer nozzle rotates with the frequency of 17 Hz/RPM, the powder particle size obtained 95 ~ 230 μm;
(3) homogenize
Powder after granulation is put into homogenization machine and stir 25min, homogenization machine rotating speed 13r/min;
(4) screen
Powder after homogenize is first through 80 object sieves and then through 115 object sieve screenings, the powder particle size size obtained is 120 ~ 180 μm, and the charging aperture of homogenization machine and discharging opening are provided with permanent bar magnet can clear up the impurity such as the oxide of iron in powder and iron;
(5) shaping
Use isostatic pressing method is shaping, and the powder after screening is placed in mould, then mould is put into isostatic pressing machine, progressively pressurizeed by pressure charging system, the Stress control of isostatic pressing machine, at 225Mpa, obtains ceramic idiosome, and operating environment temperature keeps 22 DEG C;
(6) Vehicle Processing
External diameter is 109.8mm, internal diameter is 94.6mm, height is the tubulose of 75.8mm to utilize lathe to be made by ceramic idiosome.
The tubular ceramic idiosome of above-mentioned production is placed in natural gas sintering furnace and carries out high temperature sintering, temperature is 1550 DEG C, sintering time is 3 hours, and after high temperature sintering, the external diameter of ceramic idiosome is 101.6mm, internal diameter 87.5mm, highly for 70.1mm, the shrinkage factor of ceramic idiosome is 7.5%.
The assay method of pottery green density: the fritter ceramic idiosome after sintering being cut into 2*2mm, utilizes assay balance to measure its density for 3.71g/cm3.
embodiment two:
A production method for the ceramic idiosome of low-shrinkage, comprises the steps
:
(1) raw material ball milling
Pour 92 parts by weight of alumina, 2 weight portion silica, 1 weight parts of calcium carbonate, 1 parts by weight kaolin clay, 2 weight portion zirconium silicates into ball mill, in raw material and ball mill, the mass ratio of ballstone is 4:1, add the binding agent PVA of raw material gross mass 6% simultaneously, the softening agent ethylene glycol of raw material gross mass 1%, the grinding aid ammonium of raw material gross mass 0.5% coagulate acrylates, ball milling 22 hours, drum's speed of rotation 32r/min, obtains the slurry of viscosity 6020mpa.s;
(2) granulation
Slurry adds centrifugal atomizer entrance, and sprayer nozzle rotates with the frequency of 16 Hz/RPM, the powder particle size obtained 100 ~ 200 μm;
(3) homogenize
Powder after granulation is put into homogenization machine and stir 30min, homogenization machine rotating speed 12r/min;
(4) screen
Powder after homogenize is first through 90 object sieves and then through 115 object sieve screenings, the powder particle size size obtained is 125 ~ 160 μm, and the charging aperture of homogenization machine and discharging opening are provided with permanent bar magnet can clear up the impurity such as the oxide of iron in powder and iron;
(5) shaping
Use isostatic pressing method is shaping, and the powder after screening is placed in mould, then mould is put into isostatic pressing machine, progressively pressurizeed by pressure charging system, make the Stress control of isostatic pressing machine at 220Mpa, obtain ceramic idiosome, operating environment temperature keeps 22 DEG C;
(6) Vehicle Processing
Lathe is utilized ceramic idiosome to be made the tubulose of external diameter 110.1mm, internal diameter 93.7mm, height 75.3mm.
The tubular ceramic idiosome of above-mentioned preparation is placed in natural gas sintering furnace and carries out high temperature sintering, temperature is 1550 DEG C, sintering time is 3 hours, and external diameter 102.1mm, internal diameter 86.9mm, the highly 69.8mm of ceramic idiosome after high temperature sintering, the shrinkage factor of ceramic idiosome is 7.3%.
The assay method of pottery green density: the fritter product after sintering being cut into 2*2mm, utilizes assay balance to measure its density for 3.69g/cm3.
embodiment three:
A production method for the ceramic idiosome of low-shrinkage, comprises the steps:
(1) raw material ball milling
Pour the raw material of 94 parts by weight of alumina, 3 weight portion silica, 2 weight parts of calcium carbonate, 1.5 parts by weight kaolin clay, 2 weight portion zirconium silicates into ball mill, in raw material and ball mill, the mass ratio of ballstone is 5:1, add the binding agent PVA of raw material gross mass 5.5% simultaneously, the softening agent ethylene glycol of raw material gross mass 1.5%, the grinding aid ammonium of raw material gross mass 1% coagulate acrylates, ball milling 24 hours, drum's speed of rotation 33r/min, obtains the slurry of viscosity 6012mpa.s;
(2) granulation
Slurry adds centrifugal atomizer entrance, and sprayer nozzle rotates with the frequency of 18 Hz/RPM, the powder particle size obtained 95 ~ 210 μm;
(3) homogenize
Powder after granulation is put into homogenization machine and stir 35min, homogenization machine rotating speed 15r/min;
(4) screen
Powder after homogenize is first through 80 object sieves and then through 120 object sieve screenings, the powder particle size size obtained is 120 ~ 180 μm, and the charging aperture of homogenization machine and discharging opening are provided with permanent bar magnet can clear up the impurity such as the oxide of iron in powder and iron;
(5) shaping
Use isostatic pressing method is shaping, and the powder after screening is placed in mould, then mould is put into isostatic pressing machine, progressively pressurizeed by pressure charging system, the pressure making isostatic pressing machine is 240Mpa, obtains ceramic idiosome, and operating environment temperature keeps 24 DEG C;
(6) Vehicle Processing
Lathe is utilized ceramic idiosome to be made the tubulose of external diameter 107.2mm, internal diameter 93mm, height 75.7mm.
The tubular ceramic idiosome of above-mentioned preparation is placed in natural gas sintering furnace and carries out high temperature sintering, temperature is 1550 DEG C, sintering time is 3 hours, and after high temperature sintering, the external diameter of ceramic idiosome is 99.4mm, internal diameter is 86.2mm, highly for 70.2mm, the shrinkage factor of ceramic idiosome is 7.3%.
The assay method of pottery green density: the fritter ceramic idiosome after sintering being cut into 2*2mm, utilizes assay balance to measure its density for 3.72g/cm3.
As shown in Figure 1, be 3.1g/cm3 through isostatic pressing machine ceramic green density out, through high temperature sintering, along with the density of the rising pottery idiosome of temperature becomes large, during to 1550 DEG C, density obtains maximum 3.72 g/cm3, afterwards along with the rising of temperature, volatilization is complete mutually for the brilliant picture of glass in pottery, and the density of pottery remains on 3.6 ~ 3.7 g/cm3.
Claims (3)
1. a ceramic idiosome production method for low-shrinkage, is characterized in that: comprise the steps:
(1) raw material ball milling: pour the raw material of 92 ~ 95 parts by weight of alumina, 1 ~ 3 weight portion silica, 1 ~ 2 weight parts of calcium carbonate, 0.5 ~ 1.5 parts by weight kaolin clay, 1.5 ~ 2.5 weight portion zirconium silicates into ball mill, in raw material and ball mill, the mass ratio of ballstone is 3 ~ 5:1, ball milling 22 ~ 24 hours, drum's speed of rotation is 30 ~ 33r/min, obtains the slurry that viscosity is 6010 ~ 6020mpa.s;
(2) granulation: the slurry obtained by ball milling adds centrifugal atomizer entrance, sprayer nozzle rotates with the frequency of 16 ~ 18 Hz/RPM, and the powder particle size obtained is 95 ~ 230 μm;
(3) homogenize: the powder after granulation is put into homogenization machine and stir 25 ~ 35min, homogenization machine rotating speed 12 ~ 15r/min;
(4) screen: the powder after homogenize is first through 80 ~ 90 object sieves and then through 115 ~ 130 object sieve screenings, and the powder particle size size obtained is 120 ~ 180 μm;
(5) shaping: to use isostatic pressing method shaping, the powder after screening is placed in mould, then mould is put into isostatic pressing machine, progressively pressurizeed by pressure charging system, the pressure making isostatic pressing machine is 220 ~ 260MPa, obtains ceramic idiosome, and the environment temperature of isostatic pressing machine operation keeps 22 ~ 24 DEG C;
(6) Vehicle Processing: utilize lathe that ceramic idiosome is made required shape.
2. the ceramic idiosome production method of low-shrinkage as claimed in claim 1, it is characterized in that: add binding agent PVA during described step (1) Raw ball milling, softening agent ethylene glycol, grinding aid ammonium coagulate acrylates, the addition of described binding agent PVA is 5 ~ 6% of raw material gross mass, the addition of described softening agent ethylene glycol be raw material gross mass 1 ~ 1.5%, the described grinding aid ammonium addition of coagulating acrylates is 0.5 ~ 1% of raw material gross mass.
3. adopt ceramic idiosome prepared by the ceramic idiosome production method of low-shrinkage according to claim 1, it is characterized in that: prepared ceramic green density size is 3.69 ~ 3.72g/cm3, is 7.3 ~ 7.5% through the shrinkage factor of 1550 DEG C of high temperature sinterings after 3 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410512286.1A CN104308956B (en) | 2014-09-29 | 2014-09-29 | Ceramic idiosome and the production method thereof of low-shrinkage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410512286.1A CN104308956B (en) | 2014-09-29 | 2014-09-29 | Ceramic idiosome and the production method thereof of low-shrinkage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104308956A true CN104308956A (en) | 2015-01-28 |
| CN104308956B CN104308956B (en) | 2016-05-18 |
Family
ID=52364334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410512286.1A Active CN104308956B (en) | 2014-09-29 | 2014-09-29 | Ceramic idiosome and the production method thereof of low-shrinkage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104308956B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106866159A (en) * | 2017-03-17 | 2017-06-20 | 无锡康伟工程陶瓷有限公司 | The preparation method of metallized ceramic raw material |
| CN106984823A (en) * | 2017-03-17 | 2017-07-28 | 无锡康伟工程陶瓷有限公司 | The effective metallized ceramic forming method of vacuum switch |
| CN111958762A (en) * | 2020-09-03 | 2020-11-20 | 赣州艺佳兴陶瓷有限公司 | Method for manufacturing ceramic body by using ceramic waste |
| CN113536529A (en) * | 2021-05-24 | 2021-10-22 | 山西中电科新能源技术有限公司 | Furnace feeding assembly optimization method for carbon-carbon composite material deposition |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01129948A (en) * | 1987-11-16 | 1989-05-23 | Murata Mfg Co Ltd | Low-shrinkage ceramics |
| CN1213357A (en) * | 1996-01-18 | 1999-04-07 | 东陶机器株式会社 | Ceramic whiteware, ceramic body, processes for producing these, sanitary ware and process for producing the sanitary ware |
| CN1477687A (en) * | 2002-08-23 | 2004-02-25 | 清华大学 | Process for preparing zero-shrinkage low-temp, co-fired ceramic multi-layer baseplate |
| CN1948226A (en) * | 2006-10-31 | 2007-04-18 | 西安航天复合材料研究所 | Antiaxidation low shrinking ceramic high temperature glue |
| CN102432273A (en) * | 2011-09-21 | 2012-05-02 | 景德镇陶瓷学院 | Method for reducing sintering shrinkage of alumina ceramic material and product prepared by method |
| CN102452122A (en) * | 2010-10-22 | 2012-05-16 | 比亚迪股份有限公司 | Ceramic body and forming method thereof and ceramic product |
| CN103408291A (en) * | 2013-07-22 | 2013-11-27 | 南京中江新材料科技有限公司 | Aluminum oxide ceramic substrate with high heat conductivity and preparation method thereof |
-
2014
- 2014-09-29 CN CN201410512286.1A patent/CN104308956B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01129948A (en) * | 1987-11-16 | 1989-05-23 | Murata Mfg Co Ltd | Low-shrinkage ceramics |
| CN1213357A (en) * | 1996-01-18 | 1999-04-07 | 东陶机器株式会社 | Ceramic whiteware, ceramic body, processes for producing these, sanitary ware and process for producing the sanitary ware |
| CN1477687A (en) * | 2002-08-23 | 2004-02-25 | 清华大学 | Process for preparing zero-shrinkage low-temp, co-fired ceramic multi-layer baseplate |
| CN1948226A (en) * | 2006-10-31 | 2007-04-18 | 西安航天复合材料研究所 | Antiaxidation low shrinking ceramic high temperature glue |
| CN102452122A (en) * | 2010-10-22 | 2012-05-16 | 比亚迪股份有限公司 | Ceramic body and forming method thereof and ceramic product |
| CN102432273A (en) * | 2011-09-21 | 2012-05-02 | 景德镇陶瓷学院 | Method for reducing sintering shrinkage of alumina ceramic material and product prepared by method |
| CN103408291A (en) * | 2013-07-22 | 2013-11-27 | 南京中江新材料科技有限公司 | Aluminum oxide ceramic substrate with high heat conductivity and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106866159A (en) * | 2017-03-17 | 2017-06-20 | 无锡康伟工程陶瓷有限公司 | The preparation method of metallized ceramic raw material |
| CN106984823A (en) * | 2017-03-17 | 2017-07-28 | 无锡康伟工程陶瓷有限公司 | The effective metallized ceramic forming method of vacuum switch |
| CN111958762A (en) * | 2020-09-03 | 2020-11-20 | 赣州艺佳兴陶瓷有限公司 | Method for manufacturing ceramic body by using ceramic waste |
| CN113536529A (en) * | 2021-05-24 | 2021-10-22 | 山西中电科新能源技术有限公司 | Furnace feeding assembly optimization method for carbon-carbon composite material deposition |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104308956B (en) | 2016-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2604592B2 (en) | Molding method of metal, ceramic powder, etc. and composition therefor | |
| CN103951420B (en) | A kind of ceramic manual casing and preparation method thereof | |
| CA2279966C (en) | Gel strength enhancing additives for agaroid-based injection molding compositions | |
| CN104308956B (en) | Ceramic idiosome and the production method thereof of low-shrinkage | |
| CN102500748B (en) | Method for preparing aluminum silicon carbide composite material | |
| CN104291827A (en) | Process for preparing silicon carbide ceramic in complicated shape from phenolic resin serving as carbon source by adopting solid phase sintering | |
| CN105481364B (en) | The preparation method of ceramic watchcase | |
| CN105218095B (en) | The method that yttrium aluminum garnet transparent ceramic is prepared using gel casting forming reaction-sintered | |
| Zhang et al. | Characterization of spray granulated Nd: YAG particles for transparent ceramics | |
| CN108529572B (en) | Preparation method of compact hexagonal boron nitride block | |
| CN102076133B (en) | High-power ceramic output cap for microwaves and production method thereof | |
| CN112760538B (en) | Preparation method of vanadium-tungsten alloy target blank | |
| CN107540374A (en) | The preparation method of yttrium oxide transparent ceramic | |
| CN105541305A (en) | Preparation method of silicon controlled rectifier product with inner diameter of 180mm | |
| KR101262809B1 (en) | Composite for buncheong ceramic wear available for slip casting and manufacturing method of buncheong porcelain | |
| CN104609870A (en) | Preparation method of porous brick | |
| CN108329017B (en) | Isometric spherical magnesium material, preparation method thereof and application thereof in producing dispersed magnesium air-permeable plug | |
| CN105880463A (en) | Sand for precision casting and preparation process of sand for precision casting | |
| CN109016078B (en) | Fiber ceramic powder compression molding process | |
| JP2008254427A (en) | Manufacturing method of component by pim or micro pim | |
| CN103171027B (en) | Preparation method for circular type ceramic sprue cup in machine wheel forming mode | |
| CN107759228B (en) | Gel injection molding method of hexagonal boron nitride ceramic | |
| RU2170715C2 (en) | Method of preparing products from sintered glass crystalline lithium alumosilicate material | |
| CN107162575A (en) | A kind of preparation method of high-temperature crucible | |
| KR101357286B1 (en) | Method for manufacturing alumina pellet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |