Preparation and oxidation behaviour of nanocrystalline Ni plus CrAlYSiN composite coating with AlN diffusion barrier on Ni-based superalloy K417

被引：53

作者：

Zhu, Lijuan ^{[1
]}

Zhu, Shenglong ^{[1
]}

Wang, Fuhui ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China

来源：

CORROSION SCIENCE | 2012年 / 60卷

关键词：

Superalloys; EPMA; Oxidation; HIGH-TEMPERATURE OXIDATION; THERMAL-STABILITY; PROTECTIVE-COATINGS; CORROSION BEHAVIOR; ELASTIC PROPERTIES; NICRALY COATINGS; MCRALY COATINGS; O-N; ALLOYS; INTERDIFFUSION;

D O I：

10.1016/j.corsci.2012.03.027

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A Ni + CrAlYSiN composite coating was prepared on a Ni-based superalloy K417 by vacuum arc evaporation, mainly consists of nanocrystalline gamma-Ni, fcc-AlN and fcc-CrN. The oxidation behaviour of the specimens in air at 1000 degrees C for 100 h was studied. A double-layer oxide scale, inner Al2O3 layer and outer mixture layer mainly dominated by NiCr2O4, formed on the composite coating. Substantial interdiffusion between the composite coating and the substrate was observed. In contrast, a unique alumina scale formed on the composite coating with a nanocrystalline hcp-AlN barrier layer, and the interdiffusion between the composite coating and the substrate was undetectable. (c) 2012 Elsevier Ltd. All rights reserved.

引用

页码：265 / 274

页数：10

共 51 条

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