Yoon, JK Doh, JM Byun, JY Kim, GH Lee, JK Hong, KT 2024-01-21T08:30:57Z 2024-01-21T08:30:57Z 2021-09-03 2003-08-01 0257-8972 https://pubs.kist.re.kr/handle/201004/138320 The formation process of MoSi2/beta-SiC composite coating by chemical vapor deposition of Si on the Mo2C layer formed in advance on a Mo substrate by a carburizing process was investigated using optical microscopy, field-emission scanning electron microscopy cross-sectional transmission electron microscopy and X-ray diffraction. The composite coating was composed of equiaxed MoSi2 grains with average size of 300 nm and the beta-SiC particles with average size of 92 nm, which were mostly located at the grain boundaries of MoSi2. The morphology of beta-SiC particles was oblate- spheroidal shape and volume percentage was approximately 19.3%. The number of cracks in the composite coating was smaller than that for the monolithic MoSi2 coating by the reduced mismatch of thermal expansion coefficient with the Mo substrate. The formation mechanism of MoSi2/beta-SiC composite coating was suggested on the basis of microstructure observation. (C) 2003 Elsevier Science B.V. All rights reserved. English ELSEVIER SCIENCE SA STATE DISPLACEMENT REACTION MOLYBDENUM DISILICIDE OXIDATION RESISTANCE GROWTH Formation of MOSi2-SiC composite coatings by chemical vapor deposition of Si on the surface of MO2C layer formed by carburizing of Mo substrate Article 10.1016/S0257-8972(03)00465-1 1 SURFACE & COATINGS TECHNOLOGY, v.173, no.1, pp.39 - 46 SURFACE & COATINGS TECHNOLOGY 173 1 39 46 scie scopus 000184388200005 2-s2.0-0038822343 Materials Science, Coatings & Films Physics, Applied Materials Science Physics Article STATE DISPLACEMENT REACTION MOLYBDENUM DISILICIDE OXIDATION RESISTANCE GROWTH carburizing process chemical vapor deposition MOSi2-SiC composite coating molybdenum