AN INVESTIGATION OF A CONICRALY OVERLAY COATING AND ITS OXIDATION BEHAVIOR BY MEANS OF IMAGING SIMS

被引：6

作者：

LEES, DG

JOHNSON, D

机构：

[1] CTR SURFACE & MAT ANAL LTD,MANCHESTER M1 7ED,ENGLAND

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

来源：

OXIDATION OF METALS | 1992年 / 38卷 / 3-4期

关键词：

COATINGS; REACTIVE ELEMENTS; ADHESION; GROWTH MECHANISMS; HOT CORROSION; SIMS;

D O I：

10.1007/BF00666912

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A CoNiCrAlY overlay coating and its oxidation behavior have been studied by means of imaging SIMS. Maps of the coating and scale showed a highly uneven yttrium distribution which arose at least partly during the deposition of the coating. The implications of this for the resistance of the coating to oxidation and hot corrosion are discussed. There was no evidence of yttrium build-up at the scale/metal interface. The yttrium maps show the power of imaging SIMS for studying the distribution of elements which are present in very low concentrations. A preliminary experiment using O-18- as a tracer showed that the scale grew primarily at the scale/metal interface.

引用

页码：217 / 231

页数：15

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