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IMPROVEMENT ON SiC COATED CF/Al COMPOSITES BY K_2ZrF_6 WETTING PROMOTION |
CHEN Xinguo;SHEN Zuhong;ZHENG Guobin Institute of Metal Research; Academia Sinica; ShenyangZhejiang Institute of Metallurgy; Hangzhou 310013 |
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Cite this article:
CHEN Xinguo;SHEN Zuhong;ZHENG Guobin Institute of Metal Research; Academia Sinica; ShenyangZhejiang Institute of Metallurgy; Hangzhou 310013. IMPROVEMENT ON SiC COATED CF/Al COMPOSITES BY K_2ZrF_6 WETTING PROMOTION. Acta Metall Sin, 1993, 29(8): 91-96.
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Abstract The CF/Al composite seems hard to be forming, the wettability between car-bon fibres and Al, which is mainly because of their interfacial chemical reaction, is still poorthough it was treated by K_2ZrF_6 wetting promotion. While, the wettability between SiC andAl is dependent on dissolving a small amount of SiC, coating on carbon fibre, in Al melt. Thediffusion of K, in K_2ZrF_6, through the carbon fibre surface or SiC coating may perhaps bepromoted. Molten Al may fully infiltrate the SiC coated fibre tows or fibre preforms in a veryshortterm. Thus, the fair CF/SiC/Al interfaces may be obtained by alloying the matrixwith Si, and the compattibility between C/Al interfaces and other forming problem may be
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Received: 18 August 1993
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