CN103332935B - Aluminum nitride composite ceramic - Google Patents
Aluminum nitride composite ceramic Download PDFInfo
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- CN103332935B CN103332935B CN201310245044.6A CN201310245044A CN103332935B CN 103332935 B CN103332935 B CN 103332935B CN 201310245044 A CN201310245044 A CN 201310245044A CN 103332935 B CN103332935 B CN 103332935B
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Abstract
The invention relates to the ceramic filed and particular relates to an aluminum nitride composite ceramic. The aluminum nitride composite ceramic comprises the following components in parts by mass: 3-5 parts of silicon nitride, 10-15 parts of silicon oxynitride, 30-50 parts of aluminum nitride, 20-40 parts of silicon dioxide, and 10-20 parts of magnesium oxide. The aluminum nitride composite ceramic is prepared through steps of raw material pulping, injection moulding, drying and sintering. Based on the aluminum nitride raw material, the aluminum nitride composite ceramic also comprises the silicon nitride, the silicon oxynitride, the silicon dioxide and the magnesium oxide, so that the synthesis technique property of the aluminum nitride composite ceramic is improved. Compared with ceramic prepared only by aluminum nitride, the composite ceramic is greatly improved in properties, and is suitable for being used as the aluminum nitride composite ceramic material.
Description
Technical field
What the present invention relates to is a kind of aluminium nitride composite ceramics of ceramic field.
Background technology
Aluminium nitride ceramics (Aluminium Nitride Ceramic) is to take the pottery that aluminium nitride (AIN) is principal crystalline phase.AIN crystal be take (AIN4) tetrahedron as structural unit covalent linkage compound, has wurtzite-type structure, belongs to hexagonal system.Chemical constitution AI 65.81%, and N 34.19%, proportion 3.261g/cm3, and white or canescence, monocrystalline water white transparency, the distillation decomposition temperature under normal pressure is 2450 ℃.For a kind of high-temperature heat-resistance material.Thermal expansivity (4.0-6.0) X10(-6)/℃.Polymorph A IN thermal conductivity reaches 260W/ (m.k), the high 5-8 of ratio aluminum oxide doubly, so heat shock resistance is good, 2200 ℃ of abilities very hot.In addition, aluminium nitride has the characteristic that not corroded by aluminium liquid and other molten metal and gallium arsenide, particularly molten aluminum liquid is had to fabulous erosion resistance.
Aluminium nitride ceramics thermal conductivity is high, and thermal expansivity is low, and various electrical properties are good, good mechanical property, and High anti bending strength, light-transfer characteristic is good, nontoxic.
Simple aluminium nitride ceramics difficult forming, cost is high.
Summary of the invention
The drawback existing in order to overcome aluminium nitride ceramics one-component, the present invention proposes a kind of aluminium nitride composite ceramics.This pottery is become to be grouped into by silicon nitride, silicon oxynitride, aluminium nitride, silicon-dioxide and magnesium oxide.Solve the technical problem of single silicon nitride ceramics improved performance.
The scheme that technical solution problem of the present invention adopts is
Batching: press mass fraction, silicon nitride 3-5 part, silicon oxynitride 10-15 part, aluminium nitride 30-50 part, silicon-dioxide 20-40 part, magnesium oxide 10-20 part.
Through raw pulp and injection molding drying and sintering process, make aluminium nitride composite ceramics product.
Positively effect, because the present invention is on aln raw material basis, add silicon nitride, silicon oxynitride, silicon-dioxide and magnesium oxide, so improved comprehensive technical performance, the more simple aluminium nitride ceramics of made composite ceramics has larger improved performance, and cost is low, is suitable for industry and generally uses.Suitablely as aluminium nitride composite ceramic material, apply.
Embodiment
Batching: press mass fraction, silicon nitride 3-5 part, silicon oxynitride 10-15 part, aluminium nitride 30-50 part, silicon-dioxide 20-40 part, magnesium oxide 10-20 part.
Through raw pulp and injection molding drying and sintering process, make aluminium nitride composite ceramics product.
Technical feature:
Thermal conductivity is higher than aluminium nitride ceramics 2%;
The coefficient of expansion is lower than aluminium nitride ceramics 1%;
Intensity is higher than aluminium nitride ceramics 5%;
Resistance to elevated temperatures is higher than 210 ℃ of aluminium nitride ceramicss;
Resistance to chemical corrosion and aluminium nitride ceramics are suitable;
Resistivity height and aluminium nitride ceramics 10%;
Dielectric loss little with aluminium nitride ceramics 8%;
Hardness height and grade of aluminium nitride ceramics;
Resistance toheat is higher than aluminium nitride ceramics 80-105 ℃
The erosion of molten-metal-resistant is higher than aluminium nitride ceramics;
Test shows, aluminium nitride composite ceramics of the present invention is stable to acid.Fresh surface is exposed in wet air can reaction generate oxide film as thin as a wafer.Utilize this characteristic, can be used as the crucible of the Metal Meltings such as aluminium, copper, silver, lead and burn casting mould material.
Embodiment
The aluminium alloy casting cast gate cap made from aluminium nitride composite ceramics of the present invention, compares with simple aluminium nitride ceramics, and performance index meet Specifications completely, extend 3-5 work-ing life doubly.
Claims (1)
1. an aluminium nitride composite ceramics, is applied to the crucible of Metal Melting and burns casting mould material, and feed composition is aluminium nitride 30-50 part, silicon-dioxide 20-40 part, and magnesium oxide 10-20 part, and add silicon nitride and silicon oxynitride, it is characterized in that:
The silicon nitride adding is 3-5 part of oeverall quality, and silicon oxynitride is 10-15 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310245044.6A CN103332935B (en) | 2013-06-20 | 2013-06-20 | Aluminum nitride composite ceramic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310245044.6A CN103332935B (en) | 2013-06-20 | 2013-06-20 | Aluminum nitride composite ceramic |
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| Publication Number | Publication Date |
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| CN103332935A CN103332935A (en) | 2013-10-02 |
| CN103332935B true CN103332935B (en) | 2014-12-10 |
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| CN201310245044.6A Active CN103332935B (en) | 2013-06-20 | 2013-06-20 | Aluminum nitride composite ceramic |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106187261A (en) * | 2016-07-20 | 2016-12-07 | 合肥毅创钣金科技有限公司 | The toughness reinforcing great power LED of a kind of silicon carbide whisker is with high heat conduction aluminum nitride ceramic substrate |
| CN113184812B (en) * | 2021-05-31 | 2022-09-06 | 福建臻璟新材料科技有限公司 | Silicon nitride doped modified nano aluminum nitride composite powder and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1152298A (en) * | 1995-07-11 | 1997-06-18 | 株式会社东芝 | Aluminum Nitride sinter and process for production thereof |
| US7148166B2 (en) * | 2002-11-14 | 2006-12-12 | Ngk Insulators, Ltd. | Aluminum nitride ceramics and a member used for the production of semiconductors |
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2013
- 2013-06-20 CN CN201310245044.6A patent/CN103332935B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1152298A (en) * | 1995-07-11 | 1997-06-18 | 株式会社东芝 | Aluminum Nitride sinter and process for production thereof |
| US7148166B2 (en) * | 2002-11-14 | 2006-12-12 | Ngk Insulators, Ltd. | Aluminum nitride ceramics and a member used for the production of semiconductors |
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| CN103332935A (en) | 2013-10-02 |
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Owner name: LIAONING YIFEI TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SUIZHONG YIFEI ARTIFICIAL LENS TECHNOLOGY CO., LTD. |
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Address after: 125205, No. 11, Yanshan Road, A District, East Dai River New Area, Suizhong County, Liaoning, Liaoning Patentee after: LIAONING YIFEI TECHNOLOGY CO., LTD. Address before: Yanshan Liaoning 125205 Huludao province Liaoning city Suizhong County East River area A East Road, No. 11 Patentee before: Suizhong Yifei Artificial Lens Technology Co., Ltd. |