INFLUENCE OF CE3+/CE4+ RATIO ON PHASE-STABILITY AND RESIDUAL-STRESS FIELD IN CERIA YTTRIA STABILIZED ZIRCONIA PLASMA-SPRAYED COATINGS

被引：17

作者：

DALMASCHIO, R ^{[1
]}

SCARDI, P ^{[1
]}

LUTTEROTTI, L ^{[1
]}

INGO, GM ^{[1
]}

机构：

[1] CNR,IST TEORIA & STRUTTURA ELETTRON,ROME,ITALY

来源：

JOURNAL OF MATERIALS SCIENCE | 1992年 / 27卷 / 20期

关键词：

D O I：

10.1007/BF00541628

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

CeO2-Y2O3 stabilized zirconia plasma-sprayed coatings have been produced by two different procedures based on different cooling rates. A high cooling rate (HCR) induced the contemporary presence of CeO2 and Ce2O3, while cooling in calm air (LCR) induced the presence of only CeO2. After subjecting the HCR coating, detached from the substrate, to an air thermal treatment, which oxidizes Ce2O3 to CeO2, a lower thermal expansion coefficient was measured than in the LCR material, and shrinkage was also observed. This behaviour is explained by the phase composition changes induced by the oxidation of ceria.

引用

页码：5591 / 5596

页数：6

共 24 条

[1] XPS INVESTIGATION OF IMPURITY PHASE SEGREGATION IN 25.5-WT-PERCENT CEO2-2.5Y2O3-72ZRO2 PLASMA-SPRAYED THERMAL BARRIER COATINGS [J].