Articles
  • Microstructure and mechanical properties of yttrium aluminum garnet porous ceramics prepared by different sintering process parameters

  • Yue Liua, Xueqing Yanga, Kangliang Pengb, Qiong Wangc, Jianzhen Huangc, Zilin Zhanga, Jiang Lua, Hao Xua, Jieguang Songb,c,* and Lin Chena,*

  • aKey Laboratory for Industrial Ceramics of Jiangxi Province, School of Materials and Chemistry Engineering, Pingxiang University, Pingxiang 337055 China
    bResearch Institute of Sponge City, Pingxiang University, Pingxiang 337055 China
    cEngineering & Technology Research Center for Environmental Protection Materials and Equipment of Jiangxi Province, School of Materials and Chemistry Engineering, Pingxiang University, Pingxiang 337055 China

Abstract

Yttrium aluminum garnet (YAG), which possesses excellent properties, is investigated and applied. The sintering technology of YAG porous ceramics is optimized. Results show that the porosity initially increases and then decreases with an increase of increasing temperature rate, the porosity are decreased with an increase of removing carbon temperature, the porosity are decreased with an increase of sintering temperature, the porosity are decreased with an increase of holding time. Meanwhile, the compressive strength constantly exhibits an opposite tendency. The optimization of the sintering technology of YAG porous ceramics is based on porosity and compressive strength. A good sintering technology are an increasing temperature rate of 8 ℃/min, a removing carbon temperature of 800 ℃, removing carbon time of 1 h, a sintering temperature of 1450 ℃ and holding time of 2 h. The porosity of the prepared YAG porous ceramics is 57.4%, and the compressive strength is 8.89 MPa.


Keywords: YAG porous ceramics, sintering technology, porosity, compressive strength

This Article

  • 2019; 20(4): 436-441

    Published on Aug 31, 2019

  • Received on Apr 30, 2019
  • Revised on Jun 25, 2019
  • Accepted on Jul 10, 2019

Correspondence to

  • Jieguang Song b,c and Lin Chen a

  • aKey Laboratory for Industrial Ceramics of Jiangxi Province, School of Materials and Chemistry Engineering, Pingxiang University, Pingxiang 337055 China
    bResearch Institute of Sponge City, Pingxiang University, Pingxiang 337055 China
    cEngineering & Technology Research Center for Environmental Protection Materials and Equipment of Jiangxi Province, School of Materials and Chemistry Engineering, Pingxiang University, Pingxiang 337055 China
    Tel : +86-799-6682178
    Fax: +86-799-6682171

  • E-mail: sjg825@163.com(J. G. Song) rymw27@163.com (L. Chen