无机材料学报 ›› 2017, Vol. 32 ›› Issue (9): 1004-1008.DOI: 10.15541/jim20160682

• • 上一篇    

烧结助剂(Y3+、La3+和Mg2+)对半透明氧化铝陶瓷的透光率的影

袁 康, 廖其龙, 王 辅, 代云雅, 黄金山   

  1. (西南科技大学 材料科学与工程学院, 绵阳 621010)
  • 收稿日期:2016-12-14 出版日期:2017-09-30 网络出版日期:2017-08-29
  • 作者简介:袁 康. E-mail:512794745@qq.com

Effects of Sintering Aids (Y3+, La3+ and Mg2+) on the Optical Transmittance of Translucent Alumina Ceramic

YUAN Kang, LIAO Qi-Long, WANG Fu, DAI Yun-Ya, HUANG Jin-Shan   

  1. (School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China)
  • Received:2016-12-14 Published:2017-09-30 Online:2017-08-29
  • About author:YUAK Kang (1990–), male, candidate of master degree. E-mail:512794745@qq.com
  • Supported by:
    Joint Funds of the National Science Foundation of China Academy of Engineering Physics (U1230105)

摘要:

通过化学沉淀法引入烧结助剂Y3+、La3+和Mg2+, 采用真空烧结工艺制备了半透明Al2O3陶瓷, 并研究了烧结助剂对烧结材料的微观结构、相对密度和透光率的影响。结果表明: 引入的烧结助剂能均匀分散在合成的半透明Al2O3陶瓷中。烧结助剂的最佳引入量为Mg2+(0.15wt%)、Y3+(0.05wt%)和La3+(0.05wt%), 对应的试样在350~800 nm的波长范围内显示出的最高的总透光率(TFT)高于80%。此外, Y3+的掺杂可以促进晶粒生长, 降低孔隙率, 从而提高半透明Al2O3陶瓷的透光率。

 

关键词: 半透明氧化铝陶瓷, 化学沉淀法, 烧结助剂, 透光率

Abstract:

Translucent Al2O3 ceramics were prepared by vacuum sintering using Y3+, La3+ and Mg2+ as sintering aids which were introduced via chemical precipitation. Effects of the sintering aids on microstructure, relative density and optical transmittance of the translucent Al2O3 ceramics were investigated. The results show that the sintering aids are homogeneously dispersed in translucent Al2O3 ceramics. The optimal amount of the sintering aid introduced is Mg2+ (0.15wt%), Y3+ (0.05wt%) and La3+ (0.05wt%), and the corresponding sample shows the highest total forward transmittance (above 80% in the wavelength range of 350-800 nm). Moreover, the addition of Y3+ could promote grain growth and decrease porosity, thus the optical transmittance of the translucent Al2O3 ceramics is enhanced.

Key words: translucent alumina ceramics, chemical precipitation, sintering aids, optical transmittance

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