Magnetron-sputtered oxidation protection coatings for Mo-Si-B alloys

被引：46
|
作者：
Lange, Annika [1 ]
Braun, Reinhold [1 ]
机构：
[1] DLR German Aerosp Ctr, Inst Mat Res, D-51170 Cologne, Germany
来源：
CORROSION SCIENCE | 2014年 / 84卷
关键词：
Intermetallics; Sputtered films; SEM; Oxidation; ALUMINUM PACK CEMENTATION; HIGH-RATE DEPOSITION; MOLYBDENUM SILICIDES; RESISTANT COATINGS; BEHAVIOR; BORON; MICROSTRUCTURE; KINETICS; MO5SI3;
D O I：
10.1016/j.corsci.2014.03.013
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Oxidation protective Mo-70Al, Mo-37Si-15B and Mo-46Si-24B (at.%) coatings with 5-10 mu m thickness were deposited on Mo-9Si-8B alloys by magnetron sputtering; and their oxidation behavior was studied at 800, 1000 and 1300 degrees C in air. On the Mo-70Al layer a dense aluminum borate scale grew at 800 degrees C; however, this coating rapidly degraded at 1000 degrees C linked to substrate oxidation at uncoated areas. The Mo-37Si-15B and Mo-46Si-24B layers provided oxidation protection to the Mo-Si-B alloy at 800 and 1000 degrees C for up to 100 h due to formation of a borosilicate scale. The latter coating was protective for short times even at 1300 degrees C. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：74 / 84
页数：11
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