MECHANISMS OF DEGRADATION AND FAILURE IN A PLASMA-DEPOSITED THERMAL BARRIER COATING

被引：122

作者：

DEMASIMARCIN, JT

SHEFFLER, KD

BOSE, S

机构：

[1] Pratt and Whitney Materials Engineering, E. Hartford, CT

来源：

JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME | 1990年 / 112卷 / 04期

关键词：

D O I：

10.1115/1.2906198

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Failure of a two-layer plasma-deposited thermal barrier coating is caused by cyclic thermal exposure and occurs by spallation of the outer ceramic layer. Spallation life is quantitatively predictable, based on the severity of cyclic thermal exposure. This paper describes and attempts to explain unusual constitutive behavior observed in the insulative ceramic coating layer, and presents details of the ceramic cracking damage accumulation process, which is responsible for spallation failure. Comments also are offered to rationalize the previously documented influence of interfacial oxidation on ceramic damage accumulation and spallation life. © 1990 ASME.

引用

页码：521 / 526

页数：6

共 20 条

[1] BEHAVIOR OF THERMAL BARRIER COATINGS FOR ADVANCED GAS-TURBINE BLADES [J].