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CORRELATION BETWEEN TENSILE STRENGTH AND SURFACE MORPHOLOGY OF SiC FILAMENT |
SHI Nanlin;LIU Qingmin;CHANG Xinchun;QUAN Rong;XIA Fei Institute of Metal Research; Academia Sinica; Shenyang associate professor |
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Cite this article:
SHI Nanlin;LIU Qingmin;CHANG Xinchun;QUAN Rong;XIA Fei Institute of Metal Research; Academia Sinica; Shenyang associate professor. CORRELATION BETWEEN TENSILE STRENGTH AND SURFACE MORPHOLOGY OF SiC FILAMENT. Acta Metall Sin, 1990, 26(3): 153-156.
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Abstract The surface morphology of the continuous SiC filament, prepared by radio frequen-cy heating CVD technique, has been observed and the tensile strength of the filament relatedto the technological parameters of preparation has also been investigated, The tensile strength isfound to be dependent directly upon the surface smoothness, grain size and uniformity. How-ever, the CVD temperature, the composition and flow rate of reactive gases, as well as thecleansing of W wire substrate, etc., are the very important factors. A protective layer coatedover the outer surface of SiC filament may effectively improve the smoothness, susceptibility tosurface damage and properties of the SiC filament.
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Received: 18 March 1990
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1 Schwarz M M. Composite Materials Handbook, McGraw-Hill, 1984: 273 2 戴永耀,龚家聪,何爱高.复合材料研究,第一届全国复合材料学术会议论文选编,航空材料编辑部,1981:348 3 Buck M E. Mater Design, 1987; 8: 272 4 Crane R L, Krukonis V J. Am Ceram Soc Bull, 1975; 54: 184g |
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