Effect of LiYO2 on the synthesis and pressureless sintering of Y2SiO5

Authors

Ziqi Sun, Chinese Academy of SciencesFollow
Yanchun Zhou, Chinese Academy of Sciences
Meishuan Li, Chinese Academy of Sciences

RIS ID

41931

Publication Details

Sun, Z., Zhou, Y. & Li, M. (2008). Effect of LiYO2 on the synthesis and pressureless sintering of Y2SiO5. Journal of Materials Research, 23 (3), 732-736.

Abstract

Y₂SiO₅ has potential applications as a high-temperature structural ceramic and environmental/thermal barrier coating. In this work, we synthesized single-phase Y₂SiO₅ powders utilizing a solid–liquid reaction method with LiYO₂ as an additive. The reaction path of the Y₂O₃/SiO₂/LiYO₂ mixture with variation in temperatures and the role of the LiYO₂ additive on preparation process were investigated in detail. The powders obtained by this method have good sinterability. Through a pressureless sintering process, almost fully dense Y₂SiO₅ bulk material was achieved with a very high density of 99.7% theoretical.