Microstructure and oxidation resistance of a plasma sprayed Mo-Si-B multiphase alloy coating

被引：50

作者：

Nomura, N ^{[1
]}

Suzuki, T

Yoshimi, K

Hanada, S

机构：

[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[2] Tohoku Univ, Dept Mat Proc, Sendai, Miyagi 9808577, Japan

来源：

INTERMETALLICS | 2003年 / 11卷 / 07期

关键词：

molybdenum silicides; nanostructured intermetallics; oxidation; plasma spraying;

D O I：

10.1016/S0966-9795(03)00069-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A multiphase Mo-Si-B alloy coating can be successfully deposited onto the Mo-ZrC composite using a low pressure plasma spraying method. Microstructure of the plasma sprayed Mo-Si-B coating consists of Mo5Si3, Mo3Si and Mo5SiB2 phases, which are the same constituents as Mo-Si-B alloy powder. Nanostructure is formed in the Mo-Si-B coating with the eutectic composition owing to the rapid quenching effect by plasma spraying. The oxidation behavior of the Mo-Si-B coating shows rapid mass loss followed by slow mass gain at 1673 K in Ar-20%O-2. Dense and adherent borosilicate glass formation passivates the coating against further oxidation at 1673 K. (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：735 / 742

页数：8

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