Research on the High-Temperature Compatibility between SiCf and Mo Substrate

Hang Zhou; Yun Peng Zhang; Shu Ai Pang

doi:10.4028/www.scientific.net/AMR.393-395.269

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 393-395Research on the High-Temperature Compatibility...

Research on the High-Temperature Compatibility between SiC_f and Mo Substrate

Abstract:

For preparing Mo-based composite materials enhanced by SiCf by powder metallurgy, the high temperature of chemical compatibility between SiCf and Mo was analyzed by experimental method in order to find whether the reinforcement can effectively composite with matrix for playing synergy effect. The mixture of SiCf and Mo powder was pressed and then sintered. Using scanning electron microscopy (SEM), the fracture surface of the sintered body was observed. Using X-ray diffraction (XRD), the generation of new phase in the sintered body was analyzed. The sinter's density and hardness was tested also. The results are as follows. After 1750°C sintered, SiCf in the presence of metal Mo had decomposed and disappeared. Decomposed products which were C and Si had reacted with Mo to produce mainly compounds Mo5Si3, MoC and a small amount of MoSi2. The disappearance of the SiCf leave more holes in the substrate. Both density and hardness of the sinter are decreased.

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Periodical:

Advanced Materials Research (Volumes 393-395)

Pages:

269-273

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.393-395.269

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Online since:

November 2011

Authors:

Hang Zhou, Yun Peng Zhang, Shu Ai Pang

Keywords:

Compatibility, Composite Material, Mo, SiC_f, Sintering

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