PLASMA-SPRAYED COATINGS FOR TITANIUM-ALLOY OXIDATION PROTECTION

被引：97
作者：
MCKEE, DW
LUTHRA, KL
机构：
[1] General Electric Corporate Research and Development, Schenectady
来源：
SURFACE & COATINGS TECHNOLOGY | 1993年 / 56卷 / 02期
关键词：
D O I：
10.1016/0257-8972(93)90014-F
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The behavior of several different types of plasma-sprayed coatings applied to typical alpha + beta titanium alloys was studied in air at elevated temperatures. Ductile coatings of MCr and MCrAlY type were found to confer protection against oxidation and embrittlement for hundreds of hours during rapid thermal cycling in flowing air to at least 850-degrees-C. Measurements of the extent of interdiffusion of elements across the coating-alloy interface as functions of time and temperature were made. Typically, cobalt and iron from a coating may penetrate to depths of a few tens of micrometers into the alloy substrate after 1000 h exposure at 850-degrees-C.
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页码：109 / 117
页数：9
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