期刊
INTERMETALLICS
卷 11, 期 7, 页码 735-742出版社
ELSEVIER SCI LTD
DOI: 10.1016/S0966-9795(03)00069-4
关键词
molybdenum silicides; nanostructured intermetallics; oxidation; plasma spraying
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.
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