THE EFFECT OF PACK-ALUMINISATION ON THE MICROSTRUCTURE OF MCRA1Y AND THE PERFORMANCE OF THERMAL BARRIER COATINGS

被引：11

作者：

LIH, W

CHANG, E

WU, BC

CHAO, CH

机构：

[1] IND TECHNOL RES INST,MAT RES LABS,HSINCHU,TAIWAN

[2] AERO ENGINE FACTORY,AERO IND DEV CTR,KANG SAN,TAIWAN

来源：

SURFACE & COATINGS TECHNOLOGY | 1992年 / 50卷 / 03期

关键词：

D O I：

10.1016/0257-8972(92)90012-Y

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Plasma spraying and pack-aluminising processes were combined and applied to the nickel-base superalloy Mar-M247 to improve its cyclic oxidation resistance. The performance tests of duplex ZrO2-8 wt.%Y2O3/MCrAlY thermal barrier coatings (TBCs) were conducted at 1050-degrees-C, 1075-degrees-C, 1100-degrees-C, 1150-degrees-C and 1200-degrees-C. The results of the experiments in this study showed that TBC specimens with the aluminised MCrAlY bond coat exhibited higher cyclic lives (except for the Ni-22Cr-10Al-1Y bond coat), at all the temperatures tested, than specimens on which the bond coat was not aluminised. The microstructures of the Co-29Cr-6Al-1Y, Co-32Ni-21Cr-8Al-0.5Y and Ni-22Cr-1OAl-1Y bond coats with or without aluminising treatment were examined in detail using a scanning electron microscope equipped with an electron probe microanalyzer.

引用

页码：277 / 288

页数：12

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