CORROSION MECHANISMS OF ZRO2-Y2O3 THERMAL BARRIER COATINGS IN THE PRESENCE OF MOLTEN MIDDLE-EAST SAND

被引：50

作者：

DEWET, DJ

TAYLOR, R

STOTT, FH

机构：

[1] UNIV MANCHESTER,INST SCI & TECHNOL,CTR MAT SCI,MANCHESTER M60 1QD,LANCS,ENGLAND

[2] UNIV MANCHESTER,INST SCI & TECHNOL,CTR CORROS & PROTECT,MANCHESTER M60 1QD,LANCS,ENGLAND

来源：

JOURNAL DE PHYSIQUE IV | 1993年 / 3卷 / C9期

关键词：

D O I：

10.1051/jp4:1993969

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The deposition of mineral debris in the turbine sections of various jet engines occurred after operation on Middle-East routes. Plasma sprayed ZrO2-Y2O3 thermal barrier coatings were aged with sand samples from several Middle-East locations at temperatures of 1200 to 1500-degrees-C. At temperatures above 1400-degrees-C, the molten sand formed glassy silicate debris that penetrated the ceramic coating completely, resulting in the absorption of ZrO2 and Y2O3 into the silicate. Two corrosion mechanisms were identified, determined by the amount of calcium-based minerals in the sand.

引用

页码：655 / 663

页数：9