Research Paper

Effects of Sintering Techniques on the Microstructure and Performance of High Purity Beryllium Oxide Ceramics

  • ZHONG Chao-Wei ,
  • LIANG Jian ,
  • ZHANG Shu-Ren ,
  • ZHANG Shao-Hua ,
  • LI B
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  • State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China

Received date: 2009-08-13

  Revised date: 2009-10-13

  Online published: 2010-04-27

Abstract

The effects of traditional, multistep and two-step sintering technique on the microstructure and performance of high purity beryllium oxide ceramics were investigated. It was found that the grain size of 99BeO ceramics could be controlled by the multistep sintering method, and the thermal conductivity could be elevated via two-step sintering method. Moreover, the technique parameters of the twostep sintering method, such as the highest sintering temperature (T1), the final sintering temperature (T2) and holding time (t),were studied in detail. The results show that under the condition of T1=1630℃, T2=1550℃ and t=4h, 99 BeO oxide ceramics owing fine grain and compact structure were obtained with the thermal conductivity of 308W/(m·K), and the density of 2.95g/cm3.

Cite this article

ZHONG Chao-Wei , LIANG Jian , ZHANG Shu-Ren , ZHANG Shao-Hua , LI B . Effects of Sintering Techniques on the Microstructure and Performance of High Purity Beryllium Oxide Ceramics[J]. Journal of Inorganic Materials, 2010 , 25(4) : 415 -428 . DOI: 10.3724/SP.J.1077.2010.00415

References

[1]高陇桥. 高热导率陶瓷材料的进展. 真空电子技术, 2003(2):49-53.
[2]高陇桥. 氧化铍陶瓷.北京:冶金工业出版社, 2006:94-111.
[3]赵世柯, 尹文学, 赵建东, 等. 氧化铍陶瓷材料的性能及应用. 真空电子技术, 2004(4):24-27.
[4]王永跃(WANG Yong-Yue, et al). 铍在高科技中的应用与发展. 稀有金属材料与工程(Rare Metal Mat. Eng.), 1995, 24(6):29-31.
[5]高陇桥. 大功率真空电子器件实用的高热导率陶瓷的进展. 真空电子技术, 1999(2):27-31.
[6]Kim DongSuk, Lee JongHeun, Sung Rak Joo, et al. Improvement of translucency in Al2O3 ceramics by two-step sintering technique. J. Eur. Ceram. Soc., 2007, 27(13/14/15):3629-3632.
[7]CHEN IWei, WANG X-H. Sintering dense nanocrystalline ceramics without finalstage grain growth. Nature, 2000, 404(6774):168-171.
[8]陈智慧, 李江涛, 胡章贵, 等(CHEN Zhi-Hui, et al). 两步烧结法合成钇铝石榴石透明陶瓷. 无机材料学报(Journal of Inorganic Materials), 2008, 23(1):130-134.
[9]奚同庚. 无机材料热物性学. 上海: 上海科学技术出版社, 1981:18-23.
[10]施剑林(SHI Jian-Lin). 固相烧结Ⅲ实验: 超细氧化锆素坯烧结过程中的晶粒与气孔生长及致密化行为.硅酸盐学报(Journal of the Chinese Ceramic Society), 1998, 26(1):1-13.
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