Title:
GRAIN-GRADE ZIRCONIA TOUGHENED ALUMINA CERAMIC SUBSTRATE AND PROCESS FOR PREPARATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2021/228278
Kind Code:
A1
Abstract:
A grain-grade zirconia toughened alumina ceramic substrate and process for preparation thereof. The substrate uses alumina powder as the main phase, zirconia powder as the second phase material, and magnesium-aluminum spinel powder as a sintering aid. A binary azeotropic mixture of absolute ethanol and methyl ethyl ketone is used as a solvent; phosphate ester is used as a dispersant; polyvinyl butyral is used as an adhesive; dibutyl phthalic acid is used as a plasticizer; the volume ratios of alumina powder and zirconia powder in the alumina powder and zirconia powder are 82.44%–96.7% and 3.30%–17.56%, respectively; magnesium-aluminum spinel powder accounts for 0.1–4.0% of the total weight of the alumina powder and zirconia powder; alumina powder, zirconia powder, and magnesium-aluminum spinel powder constitute inorganic powders; the solvent is 20–35% of the total weight of the inorganic powder, the dispersant is 0.5–2.0%, the adhesive is 5–15%, and the plasticizer is 2–6%; the grain size ratio of the alumina powder and zirconia powder is 2.415–4.444. The substrate is able to ensure that ZrO2 acts as a toughening phase and no leakage current is produced, and is further able to meet the mechanical and electrical performance requirements of ceramic copper-clad substrates and heating elements.
Inventors:
WU CHONGJUN (CN)
DUAN MINGXIN (CN)
HE YUNPENG (CN)
DUAN MINGXIN (CN)
HE YUNPENG (CN)
Application Number:
PCT/CN2021/101514
Publication Date:
November 18, 2021
Filing Date:
June 22, 2021
Export Citation:
Assignee:
SINOCERAM TECH ZHENGZHOU CO LTD (CN)
International Classes:
C04B35/10; C04B35/622; C04B35/64
Foreign References:
| CN111410518A | 2020-07-14 | |||
| CN109293345A | 2019-02-01 | |||
| CN105881700A | 2016-08-24 | |||
| EP1637507A2 | 2006-03-22 |
Other References:
WU CHONGJUN, HE YUNPENG;DUAN MINGXIN: "Mechanical and Optical Properties of ZTA Ceramic Substrate", ELECTRONIC COMPONENTS AND MATERIALS, CHENGDU HONGMING DIANZHI GUFEN YOUXIAN GONGSI, CN, vol. 39, no. 3, 31 March 2020 (2020-03-31), CN , pages 88 - 93, XP055867034, ISSN: 1001-2028, DOI: 10.14106/j.cnki.1001-2028.2020.03.015
GUO YAWEI, CHAI JIANLONG;ZHU YABIN;WEI KONGFANG;LI SHUFEN;SHEN TIELONG;YAO CUNFENG;CUI MINGHUAN;WANG ZHIGUANG: "Performance Characterization of Spark Plasma Sintered Al2O3/ZrO2/MgAl2O4 Composite Ceramics", TAO CI XUE BAO : JI KAN = JOURNAL OF CERAMICS, TAO CI XUE BAO ZA ZHI SHE, CN, vol. 40, no. 3, 30 June 2019 (2019-06-30), CN , pages 289 - 294, XP055867032, ISSN: 1000-2278, DOI: 10.13957/j.cnki.tcxb.2019.03.003
HU CHENG, WANG YANMIN: "MECHANICAL PREPARATION OF ULTRA-FINE POWDER OF ALUMINA AND ITS APPLICATION IN ZTA CERAMIC", JOURNAL OF THE CHINESE CERAMIC SOCIETY, ZHONGGUO JIANZHU GONGYE CHUBANSHE, BEIJING, CN, vol. 37, no. 10, 31 October 2009 (2009-10-31), CN , pages 1628 - 1633, XP055867029, ISSN: 0454-5648, DOI: 10.14062/j.issn.0454-5648.2009.10.006
曾峰 等 (ZHENG, FENG ET AL.): "氧化锆增韧氧化铝陶瓷的性能研究 (Study on Properties of Zirconia Toughened Alumina Ceramics)", 《广东化工》 (GUANGDONG CHEMICAL INDUSTRY), vol. 45, no. 4, 31 December 2018 (2018-12-31)
冯伟 等 (FENG, WEI ET AL.): "Al2O3-ZrO2 复相陶瓷的低温力学性能和热学性能 (Mechanical and Thermal Properties of Al2O3-ZrO2 Composite Ceramics at Cryogenic Temperatures)", 《硅酸盐学报》 ("JOURNAL OF THE CHINESE CERAMIC SOCIETY"), vol. 40, no. 10, 31 March 2012 (2012-03-31)
GUO YAWEI, CHAI JIANLONG;ZHU YABIN;WEI KONGFANG;LI SHUFEN;SHEN TIELONG;YAO CUNFENG;CUI MINGHUAN;WANG ZHIGUANG: "Performance Characterization of Spark Plasma Sintered Al2O3/ZrO2/MgAl2O4 Composite Ceramics", TAO CI XUE BAO : JI KAN = JOURNAL OF CERAMICS, TAO CI XUE BAO ZA ZHI SHE, CN, vol. 40, no. 3, 30 June 2019 (2019-06-30), CN , pages 289 - 294, XP055867032, ISSN: 1000-2278, DOI: 10.13957/j.cnki.tcxb.2019.03.003
HU CHENG, WANG YANMIN: "MECHANICAL PREPARATION OF ULTRA-FINE POWDER OF ALUMINA AND ITS APPLICATION IN ZTA CERAMIC", JOURNAL OF THE CHINESE CERAMIC SOCIETY, ZHONGGUO JIANZHU GONGYE CHUBANSHE, BEIJING, CN, vol. 37, no. 10, 31 October 2009 (2009-10-31), CN , pages 1628 - 1633, XP055867029, ISSN: 0454-5648, DOI: 10.14062/j.issn.0454-5648.2009.10.006
曾峰 等 (ZHENG, FENG ET AL.): "氧化锆增韧氧化铝陶瓷的性能研究 (Study on Properties of Zirconia Toughened Alumina Ceramics)", 《广东化工》 (GUANGDONG CHEMICAL INDUSTRY), vol. 45, no. 4, 31 December 2018 (2018-12-31)
冯伟 等 (FENG, WEI ET AL.): "Al2O3-ZrO2 复相陶瓷的低温力学性能和热学性能 (Mechanical and Thermal Properties of Al2O3-ZrO2 Composite Ceramics at Cryogenic Temperatures)", 《硅酸盐学报》 ("JOURNAL OF THE CHINESE CERAMIC SOCIETY"), vol. 40, no. 10, 31 March 2012 (2012-03-31)
Attorney, Agent or Firm:
WAYNE INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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