Wear mechanisms of MCrAlY abradable plasma-sprayed coatings

被引：0

作者：

Li, S ^{[1
]}

Langlade-Bomba, C ^{[1
]}

Treheux, D ^{[1
]}

Crabos, F ^{[1
]}

Monge-Cadet, P ^{[1
]}

机构：

[1] Ecole Cent Lyon, UMR 5621, MMP, Ecully, France

来源：

THERMAL SPRAY, VOLS 1 AND 2: MEETING THE CHALLENGES OF THE 21ST CENTURY | 1998年

关键词：

D O I：

暂无

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Reduction of operating clearance between the HP turbine and the shroud in the new generation of gas turbines is one way often used by engine manufacturers to improve efficiency. This implies developing a blade tip coating/shroud coating system to minimize the degradation (particularly blades wear) during eventual rubbing. In this study, the chosen systems are : VPS NiCoCrAIYTa as HP blade tip coating, Plasma-sprayed MCrAlY coatings deposited under various atmosphere as abradable coatings. In order to understand the wear mechanisms of these systems tribological tests (block on ring and fretting) were performed to study the influence of the coating microstructure on the wear mechanisms. The results were compared and correlated to those of rub tests performed with real engine components.

引用

页码：293 / 298

页数：6

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