Journal of Inorganic Materials ›› 2013, Vol. 28 ›› Issue (4): 375-380.doi: 10.3724/SP.J.1077.2013.12255

• Orginal Article • Previous Articles     Next Articles

Application of Doping Ceramics via Infiltration on Translucent Alumina Ceramics

Guan-Wei LIU1,2, Zhi-Peng XIE1, Yin WU1   

  1. 1. State Key Lab of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
    2. General Research Institute for Nonferrous Metals, R&D Centre for Vehicles Battery and Energy Storage, Beijing 100088, China
  • Received:2012-04-21 Revised:2012-05-31 Online:2013-04-10 Published:2013-03-20
  • About author:LIU Guan-Wei. E-mail: liugwtiger@163.com

Abstract:

The feasibility to homogeneously incorporate additives and fabricate translucent alumina ceramics via liquid precursor infiltration technique was substantiated. Pre-sintered alumina compacts with various thickness values were infiltrated with aqueous yttrium nitrate solutions of different concentrations under various conditions. Line-scanning result of yttrium along the sample depth direction was investigated to characterize the doping homogeneity. It is found that better distribution homogeneity and more stringent control of a desired amount of dopants can be realized as the sample thickness and the solution concentration are decreased. By assuming all pores are open and completely saturated, the theoretical model is proposed to predict the amount of incorporated species by infiltration. Finally, translucent alumina ceramics were fabricated. Compared with ball-milling prepared counterparts, samples with improved microstructure and enhanced optical properties are achieved by infiltration.

Key words: infiltration, translucent alumina ceramics, optical properties, doping, homogeneity

CLC Number: 

  • TQ174