CN102627474A - Treatment method for burning board - Google Patents
Treatment method for burning board Download PDFInfo
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- CN102627474A CN102627474A CN2012101141811A CN201210114181A CN102627474A CN 102627474 A CN102627474 A CN 102627474A CN 2012101141811 A CN2012101141811 A CN 2012101141811A CN 201210114181 A CN201210114181 A CN 201210114181A CN 102627474 A CN102627474 A CN 102627474A
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Abstract
The invention relates to a flaky element surface treatment process, in particular to a treatment method for a burning board, and provides the treatment method for the burning board. The treatment method comprises the following steps of: preparing boron nitride slurry, which comprises boron nitride powder, a solvent, a dispersant, a binding agent and a plasticizer; casting; drying; removing an adhesive; and firing. The boron nitride is not adhered to glass at high temperature and is prepared into slurry to uniformly cover the surface of the burning board at certain strength, so that the adhesion of an electronic element and a glass layer is effectively relieved; and according to the method, the boron nitride burning board can be substituted by the alumina burning board, so that the cost can be reduced while higher strength is guaranteed.
Description
Technical field
The present invention relates to the slice component process of surface treatment, particularly a kind of treatment process of load bearing board.
Background technology
Portions of electronics element normal mode of surface applied glass coating that adopts in manufacturing processed reduces surface conductivity, improves insulation resistance.But be prone to when this technology mode can make load bearing board high temperature with the glassy phase adhesion, when load bearing board took off, outward appearance was damaged because the effect of adhesion is prone to cause, insulativity reduces with certain external force for electronic component.
Summary of the invention
Technical problem to be solved by this invention is the defective that remedies above-mentioned prior art, and a kind of treatment process of load bearing board is provided, load bearing board and slice component Watch glass layer adhesion in the time of can making high-temperature heat treatment.
The invention provides a kind of treatment process of load bearing board, may further comprise the steps:
Step 1: preparation bn slurry
Solvent, dispersion agent and SP 1 powder are mixed; With the rotating speed ball milling of 50～90r/min 20～28 hours; In said mixture, add tackiness agent and softening agent then; Rotating speed with 50～90r/min continued ball milling 20～28 hours, obtained bn slurry, and wherein the mass percent of each component is following:
Solvent: 35.0%～60.0%
Dispersion agent: 0.5%～1.5%
SP 1 powder: 32.0%～50.0%
Tackiness agent: 4.0%～12.0%
Softening agent: 0.6%～3.0%
Said solvent is that propyl acetate and isopropylcarbinol were equipped in 4: 1 by volume;
Step 2: curtain coating
Bn slurry joined circulate 0.5～1.5 hour in the casting machine; When treating in the casting slurry no obvious bubble; Through curtain coating waterfall, regulate curtain coating edge of a knife size and curtain coating pump speed with load bearing board, control curtain coating in the individual layer slurry thickness on the load bearing board in 24 ± 1 mu m ranges; Curtain coating is 2～4 layers altogether, makes casting slurry cover on the load bearing board uniformly;
Step 3: oven dry
Place baking oven to dry the load bearing board that is coated with casting slurry;
Step 4: binder removal
With the load bearing board that the is coated with casting slurry binder removal in the binder removal stove after the oven dry; Binder removal curve in the binder removal stove is following: rose to 80 ℃ through 1.5～2.5 hours from room temperature earlier; Then rose to 130 ℃ from 80 ℃, rose to 270 ℃ from 130 ℃, rose to 350 ℃ through 4～6 hours from 270 ℃ again through 10～14 hours through 5～7 hours; 350 ℃ of insulations 3～5 hours, after reduced to room temperature in 4～6 hours;
Step 5: burn till
Load bearing board behind the binder removal is placed the High Temperature Furnaces Heating Apparatus sintering; Sintering curre in the High Temperature Furnaces Heating Apparatus is following: rose to 350 ℃ through 4～6 hours from room temperature earlier; Then rose to 1200 ℃ from 350 ℃, 1200 ℃ of insulations 2～4 hours, cool to the room temperature kiln discharge at last with the furnace then through 9～11 hours.
The mass percent of each component that adds in the said step 1 is preferably following:
Solvent: 50.0%
Dispersion agent: 1.0%
SP 1 powder: 40.0%
Tackiness agent: 8.0%
Softening agent: 1.0%
Said load bearing board is preferably aluminum oxide burning plate.
Said dispersion agent is preferably Diethylene Glycol list [(1,1,3, the 3-tetramethyl butyl) phenyl] ether.
The particle diameter D50 of said SP 1 powder is preferably less than 1 μ m.
Said tackiness agent is preferably any in polyvinyl butyral acetal, polymethylmethacrylate and the TKK 021, and said softening agent is preferably Witcizer 300 or DOP.
Ball milling is 70r/min with the rotating speed that continues ball milling in the said step 1, and the time is 24 hours.
The bake out temperature of load bearing board in baking oven that is coated with casting slurry in the said step 3 is 50～70 ℃, and drying time is 5～15min.
Binder removal curve in the said step 4 in the binder removal stove is following: rose to 80 ℃ through 2 hours from room temperature earlier; Then rose to 130 ℃ from 80 ℃ through 6 hours; Rose to 270 ℃ through 12 hours from 130 ℃; Rose to 350 ℃ through 5 hours from 270 ℃ again, 350 ℃ of insulations 4 hours, after reduced to room temperature in 5 hours.
Sintering curre in the said step 5 High Temperature Furnaces Heating Apparatus is following: earlier rose to 350 ℃ through 5 hours from room temperature, then rose to 1200 ℃ through 10 hours from 350 ℃, 1200 ℃ of insulations 3 hours, cool to the room temperature kiln discharge at last with the furnace then.
SP 1 at high temperature not with the glass adhesion, be made into slurry and cover the load bearing board surface uniformly, the adhesion of electronic component and glass coating when having alleviated high temperature effectively with certain intensity; This method can use aluminum oxide burning plate to replace the SP 1 load bearing board, thereby has guaranteed that higher intensity reduces cost simultaneously.
Embodiment
The invention provides a kind of treatment process of load bearing board, may further comprise the steps: preparation bn slurry (comprising SP 1 powder, solvent, dispersion agent, tackiness agent and softening agent); Curtain coating; Oven dry; Binder removal; Burn till.
Said solvent is that propyl acetate and isopropylcarbinol were equipped in 4: 1 by volume.
Said dispersion agent is Diethylene Glycol list [(1,1,3, a 3-tetramethyl butyl) phenyl] ether, and dispersant adsorption is at the powder particle surface, and it is wetting that the solid particulate of cohesion is easy to, and solid can be increased by suspension, enhancing system stability.
Said SP 1 can adopt hexagonal boron nitride, and the particle diameter D50 of powder is less than 1 μ m, and SP 1 has fabulous lubricity and high-temperature stability, even if under high temperature (high temperature resistant 2800 ℃ of ability), SP 1 still can keep its oilness and inertia.The present invention uses SP 1 to handle the adhesion that can prevent carrier and electronic component behind the carrier; Improve the surperficial clean degree of carrier; SP 1 can be avoided chemical erosion, electronic component and carrier are thrown off more easily through handling to overlay on the carrier surface, so carrier has longer work-ing life.
Said tackiness agent is any in polyvinyl butyral acetal, polymethylmethacrylate and the TKK 021.
Said softening agent is Witcizer 300 or DOP.Witcizer 300 or DOP belong to phthalic ester series softening agent; Phthalic ester series softening agent is the fluidizer that the most generally uses; Be by dicarboxylicacid phthalic acid and the formed ester class of alcohols, bn slurry is had plastification.
Use bn slurry to cover on the slice component sintering carrier in the curtain coating step, used slice component sintering carrier can adopt load bearing board of zirconia or aluminum oxide burning plate.
To the present invention further explain is provided below in conjunction with specific embodiment.
Embodiment 1
The treatment process of load bearing board of the present invention comprises the steps:
Step 1: preparation bn slurry
Solvent, dispersion agent and SP 1 powder are joined in the ball mill with the rotating speed ball milling of 70r/min 24 hours; Adding tackiness agent and softening agent then continues in the ball mill with the rotating speed ball milling of 70r/min 24 hours; Obtain bn slurry, wherein the mass percent of each component is following:
Solvent: 50.0%
Dispersion agent: 1.0%
SP 1 powder: 40.0%
Tackiness agent: 8.0%
Softening agent: 1.0%
Said solvent is that propyl acetate and isopropylcarbinol were equipped in 4: 1 by volume; Said dispersion agent is Diethylene Glycol list [(1,1,3, a 3-tetramethyl butyl) phenyl] ether; The particle diameter D50 of said SP 1 powder is 0.5 μ m; Said tackiness agent is a polyvinyl butyral acetal, and said softening agent is a Witcizer 300.
Step 2: curtain coating
The above-mentioned bn slurry for preparing is joined in the casting machine circulation 1 hour; This moment casting slurry in no obvious bubble; Through curtain coating waterfall, regulate curtain coating edge of a knife size and curtain coating pump speed with aluminum oxide burning plate, control curtain coating in the individual layer slurry thickness on the aluminum oxide burning plate in 24 ± 1 mu m ranges; Curtain coating is 3 layers altogether, and casting slurry is covered on the aluminum oxide burning plate uniformly.
Step 3: oven dry
The aluminum oxide burning plate that is coated with casting slurry is placed baking oven, 60 ℃ of following 10min oven dry;
Step 4: binder removal
With the aluminum oxide burning plate that is coated with casting slurry after the oven dry according to following binder removal curve binder removal in the binder removal stove: rose to 80 ℃ through 2 hours from room temperature earlier; Then rose to 130 ℃ from 80 ℃ through 6 hours; Rose to 270 ℃ through 12 hours from 130 ℃; Rose to 350 ℃ through 5 hours from 270 ℃ again, 350 ℃ of insulations 4 hours, after reduced to room temperature in 5 hours.
Step 5: burn till
Aluminum oxide burning plate behind the binder removal is placed High Temperature Furnaces Heating Apparatus; According to following sintering curre sintering: rose to 350 ℃ through 5 hours from room temperature earlier; Then rose to 1200 ℃ from 350 ℃, 1200 ℃ of insulations 3 hours, cool to the room temperature kiln discharge at last with the furnace then through 10 hours.
The electronic component that is coated with glass coating is arranged on the aluminum oxide burning plate of putting after above-mentioned via nitride boron is handled uniformly sintering under the common process condition.The result shows, the aluminum oxide burning plate after glass coating and via nitride boron are handled does not have adhesion phenomenon, when electronic component with certain external force when aluminum oxide burning plate takes off, no outward appearance is damaged.
Embodiment 2
The treatment process of load bearing board of the present invention comprises the steps:
Step 1: preparation bn slurry
Solvent, dispersion agent and SP 1 powder are joined in the ball mill with the rotating speed ball milling of 65r/min 26 hours, add tackiness agent and softening agent then and continue in the ball mill to obtain bn slurry with the rotating speed ball milling of 65r/min 26 hours.Wherein the mass percent of each component is following:
Solvent: 47.0%
Dispersion agent: 1.2%
SP 1 powder: 45.0%
Tackiness agent: 6.0%
Softening agent: 0.8%
Said solvent is that propyl acetate and isopropylcarbinol were equipped in 4: 1 by volume; Said dispersion agent is Diethylene Glycol list [(1,1,3, a 3-tetramethyl butyl) phenyl] ether; The particle diameter D50 of said SP 1 powder is 0.8 μ m; Said tackiness agent is a polymethylmethacrylate, and said softening agent is a DOP.
Step 2: curtain coating
The above-mentioned bn slurry for preparing is joined in the casting machine circulation 1.2 hours; This moment casting slurry in no obvious bubble; Through curtain coating waterfall, regulate curtain coating edge of a knife size and curtain coating pump speed with aluminum oxide burning plate, control curtain coating in the individual layer slurry thickness on the aluminum oxide burning plate in 24 ± 1 mu m ranges; Curtain coating is 4 layers altogether, and casting slurry is covered on the aluminum oxide burning plate uniformly.
Step 3: oven dry
The aluminum oxide burning plate that is coated with casting slurry is placed baking oven, 70 ℃ of following 15min oven dry;
Step 4: binder removal
With the aluminum oxide burning plate that is coated with casting slurry after the oven dry according to following binder removal curve binder removal in the binder removal stove: rose to 80 ℃ through 2.2 hours from room temperature earlier; Then rose to 130 ℃ from 80 ℃ through 7 hours; Rose to 270 ℃ through 14 hours from 130 ℃; Rose to 350 ℃ through 5.5 hours from 270 ℃ again, 350 ℃ of insulations 4.5 hours, after reduced to room temperature in 4.5 hours.
Step 5: burn till
Aluminum oxide burning plate behind the binder removal is placed High Temperature Furnaces Heating Apparatus; According to following sintering curre sintering: rose to 350 ℃ through 5.4 hours from room temperature earlier; Then rose to 1200 ℃ from 350 ℃, 1200 ℃ of insulations 4 hours, cool to the room temperature kiln discharge at last with the furnace then through 9.6 hours.
The electronic component that is coated with glass coating is arranged on the aluminum oxide burning plate of putting after above-mentioned via nitride boron is handled uniformly sintering under the common process condition.The result shows, the aluminum oxide burning plate after glass coating and via nitride boron are handled does not have adhesion phenomenon, when electronic component with certain external force when aluminum oxide burning plate takes off, no outward appearance is damaged.
Embodiment 3
The treatment process of load bearing board of the present invention comprises the steps:
Step 1: preparation bn slurry
Solvent, dispersion agent and SP 1 powder are joined in the ball mill with the rotating speed ball milling of 80r/min 22 hours, add tackiness agent and softening agent then and continue in the ball mill to obtain bn slurry with the rotating speed ball milling of 80r/min 26 hours.Wherein the mass percent of each component is following:
Solvent: 52.0%
Dispersion agent: 0.8%
SP 1 powder: 41.0%
Tackiness agent: 5.6%
Softening agent: 0.6%
Said solvent is that propyl acetate and isopropylcarbinol were equipped in 4: 1 by volume; Said dispersion agent is Diethylene Glycol list [(1,1,3, a 3-tetramethyl butyl) phenyl] ether; The particle diameter D50 of said SP 1 powder is 0.8 μ m; Said tackiness agent is a TKK 021, and said softening agent is a DOP.
Step 2: curtain coating
The above-mentioned bn slurry for preparing is joined in the casting machine circulation 0.8 hour; This moment casting slurry in no obvious bubble; Through curtain coating waterfall, regulate curtain coating edge of a knife size and curtain coating pump speed with aluminum oxide burning plate, control curtain coating in the individual layer slurry thickness on the aluminum oxide burning plate in 24 ± 1 mu m ranges; Curtain coating is 2 layers altogether, and casting slurry is covered on the aluminum oxide burning plate uniformly.
Step 3: oven dry
The load bearing board that is coated with casting slurry is placed baking oven, 55 ℃ of following 14min oven dry;
Step 4: binder removal
With the aluminum oxide burning plate that is coated with casting slurry after the oven dry according to following binder removal curve binder removal in the binder removal stove: rose to 80 ℃ through 2.3 hours from room temperature earlier; Then rose to 130 ℃ from 80 ℃ through 5 hours; Rose to 270 ℃ through 13 hours from 130 ℃; Rose to 350 ℃ through 6 hours from 270 ℃ again, 350 ℃ of insulations 3.5 hours, after reduced to room temperature in 5.5 hours.
Step 5: burn till
Load bearing board behind the binder removal is placed High Temperature Furnaces Heating Apparatus; According to following sintering curre sintering: rose to 350 ℃ through 4 hours from room temperature earlier; Then rose to 1200 ℃ from 350 ℃, 1200 ℃ of insulations 3.5 hours, cool to the room temperature kiln discharge at last with the furnace then through 11 hours.
The electronic component that is coated with glass coating is arranged on the aluminum oxide burning plate of putting after above-mentioned via nitride boron is handled uniformly sintering under the common process condition.The result shows, the aluminum oxide burning plate after glass coating and via nitride boron are handled does not have adhesion phenomenon, when electronic component with certain external force when aluminum oxide burning plate takes off, no outward appearance is damaged.
Embodiment 4
The treatment process of load bearing board of the present invention comprises the steps:
Step 1: preparation bn slurry
Solvent, dispersion agent and SP 1 powder are joined in the ball mill with the rotating speed ball milling of 85r/min 24 hours, add tackiness agent and softening agent then and continue in the ball mill to obtain bn slurry with the rotating speed ball milling of 70r/min 25 hours.Wherein the mass percent of each component is following:
Solvent: 56.0%
Dispersion agent: 1.5%
SP 1 powder: 32.0%
Tackiness agent: 8.0%
Softening agent: 2.5%
Said solvent is that propyl acetate and isopropylcarbinol were equipped in 4: 1 by volume; Said dispersion agent is Diethylene Glycol list [(1,1,3, a 3-tetramethyl butyl) phenyl] ether; The particle diameter D50 of said SP 1 powder is 0.4 μ m; Said tackiness agent is a polyvinyl butyral acetal, and said softening agent is a Witcizer 300.
Step 2: curtain coating
The above-mentioned bn slurry for preparing is joined in the casting machine circulation 1.5 hours; This moment casting slurry in no obvious bubble; Through curtain coating waterfall, regulate curtain coating edge of a knife size and curtain coating pump speed with load bearing board of zirconia, control curtain coating in the individual layer slurry thickness on the load bearing board of zirconia in 24 ± 1 mu m ranges; Curtain coating is 3 layers altogether, and casting slurry is covered on the load bearing board of zirconia uniformly.
Step 3: oven dry
The load bearing board of zirconia that is coated with casting slurry is placed baking oven, 65 ℃ of following 8min oven dry;
Step 4: binder removal
With the load bearing board of zirconia that is coated with casting slurry after the oven dry according to following binder removal curve binder removal in the binder removal stove: rose to 80 ℃ through 1.5 hours from room temperature earlier; Then rose to 130 ℃ from 80 ℃ through 5.5 hours; Rose to 270 ℃ through 11 hours from 130 ℃; Rose to 350 ℃ through 5.3 hours from 270 ℃ again, 350 ℃ of insulations 5 hours, after reduced to room temperature in 4 hours.
Step 5: burn till
Load bearing board of zirconia behind the binder removal is placed High Temperature Furnaces Heating Apparatus; According to following sintering curre sintering: rose to 350 ℃ through 5.3 hours from room temperature earlier; Then rose to 1200 ℃ from 350 ℃, 1200 ℃ of insulations 3.2 hours, cool to the room temperature kiln discharge at last with the furnace then through 10.4 hours.
The electronic component that is coated with glass coating is arranged on the load bearing board of zirconia of putting after above-mentioned via nitride boron is handled uniformly sintering under the common process condition.The result shows, the load bearing board of zirconia after glass coating and via nitride boron are handled does not have adhesion phenomenon, when electronic component with certain external force when load bearing board of zirconia takes off, no outward appearance is damaged.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and mentioned content is not to qualification of the present invention among the embodiment.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to the present invention by the determined scope of patent protection of claims of being submitted to.
Claims (10)
1. the treatment process of a load bearing board is characterized in that, may further comprise the steps:
Step 1: preparation bn slurry
Solvent, dispersion agent and SP 1 powder are mixed; With the rotating speed ball milling of 50～90r/min 20～28 hours; In said mixture, add tackiness agent and softening agent then; Rotating speed with 50～90r/min continued ball milling 20～28 hours, obtained bn slurry, and wherein the mass percent of each component is following:
Solvent: 35.0%～60.0%
Dispersion agent: 0.5%～1.5%
SP 1 powder: 32.0%～50.0%
Tackiness agent: 4.0%～12.0%
Softening agent: 0.6%～3.0%
Said solvent is that propyl acetate and isopropylcarbinol were equipped in 4: 1 by volume;
Step 2: curtain coating
Bn slurry joined circulate 0.5～1.5 hour in the casting machine; When treating in the casting slurry no obvious bubble; Through curtain coating waterfall, regulate curtain coating edge of a knife size and curtain coating pump speed with load bearing board, control curtain coating in the individual layer slurry thickness on the load bearing board in 24 ± 1 mu m ranges; Curtain coating is 2～4 layers altogether, makes casting slurry cover on the load bearing board uniformly;
Step 3: oven dry
Place baking oven to dry the load bearing board that is coated with casting slurry;
Step 4: binder removal
With the load bearing board that the is coated with casting slurry binder removal in the binder removal stove after the oven dry; Binder removal curve in the binder removal stove is following: rose to 80 ℃ through 1.5～2.5 hours from room temperature earlier; Then rose to 130 ℃ from 80 ℃, rose to 270 ℃ from 130 ℃, rose to 350 ℃ through 4～6 hours from 270 ℃ again through 10～14 hours through 5～7 hours; 350 ℃ of insulations 3～5 hours, after reduced to room temperature in 4～6 hours;
Step 5: burn till
Load bearing board behind the binder removal is placed the High Temperature Furnaces Heating Apparatus sintering; Sintering curre in the High Temperature Furnaces Heating Apparatus is following: rose to 350 ℃ through 4～6 hours from room temperature earlier; Then rose to 1200 ℃ from 350 ℃, 1200 ℃ of insulations 2～4 hours, cool to the room temperature kiln discharge at last with the furnace then through 9～11 hours.
2. according to the treatment process of the said load bearing board of claim 1, it is characterized in that the mass percent of each component that adds in the said step 1 is following:
Solvent: 50.0%
Dispersion agent: 1.0%
SP 1 powder: 40.0%
Tackiness agent: 8.0%
Softening agent: 1.0%
3. according to the treatment process of the said load bearing board of claim 2, it is characterized in that said load bearing board is an aluminum oxide burning plate.
4. according to the treatment process of the said load bearing board of claim 3, it is characterized in that said dispersion agent is Diethylene Glycol list [(1,1,3, a 3-tetramethyl butyl) phenyl] ether.
5. according to the treatment process of the said load bearing board of claim 4, it is characterized in that the particle diameter D50 of said SP 1 powder is less than 1 μ m.
6. according to the treatment process of each said load bearing board in the claim 1 to 5; It is characterized in that; Said tackiness agent is any in polyvinyl butyral acetal, polymethylmethacrylate and the TKK 021, and said softening agent is Witcizer 300 or DOP.
7. according to the treatment process of the said load bearing board of claim 6, it is characterized in that ball milling is 70r/min with the rotating speed that continues ball milling in the said step 1, the time is 24 hours.
8. according to the treatment process of the said load bearing board of claim 7, it is characterized in that the bake out temperature of load bearing board in baking oven that is coated with casting slurry in the said step 3 is 50～70 ℃, drying time is 5～15mi n.
9. the treatment process of said load bearing board according to Claim 8; It is characterized in that the binder removal curve in the said step 4 in the binder removal stove is following: rose to 80 ℃ through 2 hours from room temperature earlier, then rose to 130 ℃ from 80 ℃ through 6 hours; Rose to 270 ℃ through 12 hours from 130 ℃; Rose to 350 ℃ through 5 hours from 270 ℃ again, 350 ℃ of insulations 4 hours, after reduced to room temperature in 5 hours.
10. according to the treatment process of the said load bearing board of claim 9; It is characterized in that; Sintering curre in the said step 5 High Temperature Furnaces Heating Apparatus is following: rose to 350 ℃ through 5 hours from room temperature earlier; Then rose to 1200 ℃ from 350 ℃, 1200 ℃ of insulations 3 hours, cool to the room temperature kiln discharge at last with the furnace then through 10 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210114181 CN102627474B (en) | 2012-04-18 | 2012-04-18 | Treatment method for burning board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210114181 CN102627474B (en) | 2012-04-18 | 2012-04-18 | Treatment method for burning board |
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| CN102627474A true CN102627474A (en) | 2012-08-08 |
| CN102627474B CN102627474B (en) | 2013-07-03 |
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| CN 201210114181 Expired - Fee Related CN102627474B (en) | 2012-04-18 | 2012-04-18 | Treatment method for burning board |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1534001A (en) * | 2003-04-02 | 2004-10-06 | 珠海粤科清华电子陶瓷有限公司 | Method of preparing zirconium oxide ceramic by curtain coating method and product obtained from said method |
| CN1533999A (en) * | 2003-04-02 | 2004-10-06 | 珠海粤科清华电子陶瓷有限公司 | Low temperature sintered 99 aluminium oxide ceramic and its production method and use |
| CN101077835A (en) * | 2007-06-25 | 2007-11-28 | 南京工业大学 | High-frequency low-loss low-temperature co-burning ceramic raw material tape and preparation method thereof |
| CN101266854A (en) * | 2007-03-16 | 2008-09-17 | 西北工业大学 | A method for making ZnO base voltage sensitive resistor |
-
2012
- 2012-04-18 CN CN 201210114181 patent/CN102627474B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1534001A (en) * | 2003-04-02 | 2004-10-06 | 珠海粤科清华电子陶瓷有限公司 | Method of preparing zirconium oxide ceramic by curtain coating method and product obtained from said method |
| CN1533999A (en) * | 2003-04-02 | 2004-10-06 | 珠海粤科清华电子陶瓷有限公司 | Low temperature sintered 99 aluminium oxide ceramic and its production method and use |
| CN101266854A (en) * | 2007-03-16 | 2008-09-17 | 西北工业大学 | A method for making ZnO base voltage sensitive resistor |
| CN101077835A (en) * | 2007-06-25 | 2007-11-28 | 南京工业大学 | High-frequency low-loss low-temperature co-burning ceramic raw material tape and preparation method thereof |
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