Alumina scale growth and degradation modes of a TBC system

被引：23

作者：

Guerre, C ^{[1
]}

Rémy, L ^{[1
]}

Molins, R ^{[1
]}

机构：

[1] ENSMP, UMR CNRS 7633, Ctr Mat, F-91003 Evry, France

来源：

MATERIALS AT HIGH TEMPERATURES | 2003年 / 20卷 / 04期

关键词：

thermal harrier coating; alumina scale growth;

D O I：

10.3184/096034003782750268

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The evolution of a thermal barrier coating system was followed during exposures at high temperature (1100degreesC) and under various thermal and mechanical loading conditions. The TBC system is composed of an EB-PVD yttria partially stabilised zirconia topcoat (TC) and a platinum nickel aluminide bond-coat (BC) deposited on a single crystal nickel based superalloy. Depending on the kind of heat treatment (isothermal or then-no-mechanically cycled), different types of defects (pores, cracks, re-oxidation), were observed at the BC/TGO interface, the TGO/TC interface or in the alumina scale. Damage processes were identified and discussed according to the type of imposed heat treatment.

引用

页码：481 / 485

页数：5