Influence of the microstructure of plasma deposited MCrAlY coatings on their tribological behaviour

被引：32

作者：

Li, S ^{[1
]}

Langlade, C ^{[1
]}

Fayeulle, S ^{[1
]}

Treheux, D ^{[1
]}

机构：

[1] Ecole Cent Lyon, UMR 5621, Lab Ingn & Fonctionnalisat Surfaces, F-69130 Ecully, France

来源：

SURFACE & COATINGS TECHNOLOGY | 1998年 / 100卷 / 1-3期

关键词：

MCrAlY; fretting; microstructure; wear;

D O I：

10.1016/S0257-8972(97)00579-3

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

MCrAlY coatings (CoNiCrAlY) were thermal sprayed under various atmospheres (air, argon, vacuum) on a nickel-based superalloy (Hastelloy X). Their microstructures (porosity. presence of oxides and phase composition) and mechanical properties (hardness and Young modulus) were characterized. The friction behaviour of these coatings sliding against a low-pressure plasma sprayed NiCoCrAlYTa coating was evaluated under fretting conditions. The study focused mainly on the different degradation mechanisms that may occur. Depending on the coating microstructure: two kinds of damage were observed: particle detachment and microstructural transformation (tribologically transformed structure). Adhesion and oxidation wear were also studied. (C) 1998 Elsevier Science S.A.

引用

页码：7 / 11

页数：5

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