MULTI-FUNCTIONAL GRADIENT FIBER COATINGS AND ITS APPLICATION

Acta Metall Sin

1993, Vol. 29

Issue (11): 91-96 DOI:

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MULTI-FUNCTIONAL GRADIENT FIBER COATINGS AND ITS APPLICATION

WANG Haowei;SHANG Baolu;ZHOU Yaohe Shanghai Jiao Tong University Northwestern Polytechnical University; Xi'an

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WANG Haowei;SHANG Baolu;ZHOU Yaohe Shanghai Jiao Tong University Northwestern Polytechnical University; Xi'an. MULTI-FUNCTIONAL GRADIENT FIBER COATINGS AND ITS APPLICATION. Acta Metall Sin, 1993, 29(11): 91-96.

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Abstract A multi-functional gradient fiber coating was produced to meet the require-ments of liquid-fabrication, interface structure and properties of composites. The coating, in-cluding wettable,gradient and soft layers, was designed according to physical,chemical andmechanical mechanism, and has been fabricated with chemical vapour deposition. The desir-ous interfacestructure, profile of composition and wetting effect were achieved after applyingthe coating to C/Al composites fabricated by liquid-infiltration. The highest tensile strengthof samples is up to 1225 MPa, appproaching to the theoretical value. The influences of soft,gradient and wettable layers on the fracture mode and strangth of composites were studied,and the optimum thickness of each layer was gained experimentally.

Key words: metal matrix composite coating interface functional gradient material

Received: 18 November 1993

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1993/V29/I11/91

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