Fabrication of metal/metal functionally graded materials with a high melting point difference

Zhangjian Zhou, Changchun Ge

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    Zhangjian Zhou, and Changchun Ge, Fabrication of metal/metal functionally graded materials with a high melting point difference, J. Univ. Sci. Technol. Beijing , 12(2005), No. 5, pp.427-430.
    Zhangjian Zhou, and Changchun Ge, Fabrication of metal/metal functionally graded materials with a high melting point difference, J. Univ. Sci. Technol. Beijing , 12(2005), No. 5, pp.427-430.
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    Materials

    Fabrication of metal/metal functionally graded materials with a high melting point difference

    • Laboratory of Special Ceramics & Powder Metallurgy, Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China

    基金项目: 

    This work was financially supported by the National Natural Science Foundation of China (No.50301001).

      通信作者:

      Zhangjian Zhou E-mail: zhouzhj@mater.ustb.edu.cn

    中文摘要

    Three kinds of full compositional distribution (from 0 to 100wt%W) W/Cu FGMs (functionally graded materials) with high density is fabricated by resistance sintering under ultra-high pressure. Microstructure analysis showed that the good grading composition of all FGMs has been obtained. The sintering mechanism of W is mainly solid state sintering. Thermal shock test in air demonstrated that the grading at the interface between W and Cu is effective for the reduction of thermal stress, but obvious transverse and vertical cracks occur in the pure W layer. The oxidation of the W60Cu40 layer and the W40Cu60 layer is heavier than that of the other layers.

     

    Materials

    Fabrication of metal/metal functionally graded materials with a high melting point difference

    Author Affilications

      • Laboratory of Special Ceramics & Powder Metallurgy, Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China

    • Funds: 

      This work was financially supported by the National Natural Science Foundation of China (No.50301001).

    • Received: 06 July 2004;
    Three kinds of full compositional distribution (from 0 to 100wt%W) W/Cu FGMs (functionally graded materials) with high density is fabricated by resistance sintering under ultra-high pressure. Microstructure analysis showed that the good grading composition of all FGMs has been obtained. The sintering mechanism of W is mainly solid state sintering. Thermal shock test in air demonstrated that the grading at the interface between W and Cu is effective for the reduction of thermal stress, but obvious transverse and vertical cracks occur in the pure W layer. The oxidation of the W60Cu40 layer and the W40Cu60 layer is heavier than that of the other layers.

     

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