Chemical compatibility of rare earth apatite with yttria-stabilized zirconia

被引：6

作者：

Zhang, Han ^{[1
]}

Lu, Jie ^{[1
]}

Luo, Lirong ^{[2
]}

Zhao, Xiaofeng ^{[1
]}

Guo, Fangwei ^{[1
]}

Xiao, Ping ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Shanghai Key Lab Adv High Temp Mat & Precis Formi, Shanghai, Peoples R China

[2] China Univ Geosci, Fac Mat Sci & Chem, Minist Educ, Engn Res Ctr Nanogeo Mat, Wuhan 430074, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2021年 / 41卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Chemical compatibility; Apatite; YSZ; Composite; Thermal barrier coatings (TBCs); THERMAL-BARRIER COATINGS; PHASE-EQUILIBRIA; CONDUCTIVITY; TRANSFORMATION; DEGRADATION; TEMPERATURE;

D O I：

10.1016/j.jeurceramsoc.2020.10.043

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The chemical compatibility of a series of rare earth apatite (RE-apatite), with Y2O3-stabilized ZrO2 (YSZ) has been investigated. Three types of RE-apatite powders with different ionic radius (RE = Gd, Nd and La) were prepared, and bulks prepared from the powder mixtures of RE-apatite and YSZ were heat-treated at 1300 degrees C up to 100 h in this study. It was found that Gd-apatite reacted with YSZ and formed a reaction layer (Gd2Si2O7) at the Gd-apatite/YSZ interface. Meanwhile, the intense Gd3+ diffusion resulted in the formation of Gd solid solutions in YSZ and much YSZ phase transformation. In contrary, as for Ndor La-apatite/YSZ composite, which has larger ionic radius, no reaction product was observed at interface and there was less RE diffusion into YSZ as well as YSZ transformation. These results clearly indicated that large ionic radius of RE3+ could enhance the chemical compatibility of RE-apatite with YSZ.

引用

页码：1995 / 2001

页数：7

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