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Citation: Zhu Jing-Chuan, Lai Zhong-Hong, Wang Li-Yan, Li Ming-Wei, Yin Zhong-Da. Mo-Si Compound Composites Synthesized by In Situ Reaction[J]. Acta Physico-Chimica Sinica, ;2002, 18(01): 66-69. doi: 10.3866/PKU.WHXB20020115 shu

Mo-Si Compound Composites Synthesized by In Situ Reaction

1.
School of Materials Science and Engineering, Harbin University of Technology, Harbin　150001

Received Date: 16 June 2001
Available Online: 15 January 2002

MoSi compound composites were synthesized by in situ reaction hot pressing. Their microstructure and phase composition were analyzed by means of scanning electron microscope(SEM), electron probe microanalyzer(EPMA) and Xray diffractometer(XRD). The results indicate that the reaction products in MoSi system vary according to the order MoSi2→Mo5Si3→Mo3Si with increasing content of Mo in mixed powders. The sintered materials are nearly fully densified except the Mo3SiMo composite,exhibiting fine and homogeneous microstructures. Both MoSi2Si and MoSi2Mo5Si3 materials have an equivalent volume fraction and display an“infiltrationflow structure”. In Mo3SiMo composite, the excess Mo phase exists in “islandstructure”.
- Mo-Si compounds;Reaction sintering;Microstructure
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