Our website is currently undergoing maintenance. Article records and full texts remain available. Submissions can be made through the Editorial Manager.

Effect of Y₂O₃, La₂O₃ and MgO Co-Doping on Densification, Microstructure and Properties of AlON Ceramics

J. Zhang, J. Lei, J. Lei, Y. Shi, J. Xie, F. Lei, L. Zhang

Journal of Ceramic Science and Technology, Vol. 8, No. 1 (2017), pp. 177-182

DOI: 10.4416/JCST2016-00114

Download full article (PDF)

Abstract

The densification of transparent AlON ceramics was investigated with the aid of Y2O3, La2O3 and MgO as sintering agents. It was found that the density of the AlON ceramics obtained after co-doping with Y2O3 and La2O3 could be further improved with the addition of a small amount of MgO. The relative density of the AlON ceramic reached 99.9 % when it was co-doped with 0.08 wt% Y2O3 + 0.02 wt% La2O3 +0.2 wt% MgO after undergoing pressureless sintering at 1900 °C for 24 h. It is argued that Y3+ and Mg2+ can decelerate grain boundary mobility, suppress grain growth and promote the elimination of pores.

Keywords

Transparent γ-AlON ceramics, pressureless sintering, co-doping

View this issue · Article & DOI index