Journal of Inorganic Materials ›› 2017, Vol. 32 ›› Issue (9): 1004-1008.doi: 10.15541/jim20160682

• Orginal Article • Previous Articles    

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

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

  1. School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
  • Received:2016-12-14 Online:2017-09-30 Published: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)

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

CLC Number: 

  • TQ174