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大變形Ag/Ni20纖維復(fù)合電接觸材料電弧侵蝕及形貌特征
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云南省院所專項(xiàng)(2002KF2X-31)；云南省中青年學(xué)術(shù)技術(shù)帶頭人后備人才培養(yǎng)計(jì)劃(2006Py01-42)


Arc Erosion and Morphological Characters of Ag/Ni20 Fiber Electrical Composites by Severe Plastic Deformation
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    摘要:

    采用包覆擠壓、集束擠壓、大變形冷拉拔等大變形技術(shù)制備出Ag/Ni20纖維復(fù)合電接觸材料，研究該材料在直流條件下觸點(diǎn)的電弧侵蝕，利用掃描電鏡 (SEM)、能譜 (EDS) 等方法分析電弧侵蝕后觸點(diǎn)表面微觀結(jié)構(gòu)和元素分布，歸納出大變形Ag/Ni20纖維復(fù)合電接觸材料具有漿糊狀凝固物、珊瑚狀結(jié)構(gòu)、骨架結(jié)構(gòu)、孔洞或氣孔、裂紋等5種電弧侵蝕形貌特征

    Abstract:

    Ag/Ni20 fiber electrical composites were prepared by severe plastic deformation including coating extrusion, bunched extrusion, and drawing. The arc erosion phenomena of this composite contact in direct current state were studied. The microstructure and element distribution in contact surface after arc erosion were analyzed by SEM and EDS. It can be concluded that in Ag/Ni20 fiber electrical composites, there are five arc erosion morphological characters, i.e. starchiness coagulum, coral-like structure, framework structure, pores/air holes, and cracks

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張昆華,管偉明,郭俊梅,宋修慶.大變形Ag/Ni20纖維復(fù)合電接觸材料電弧侵蝕及形貌特征[J].稀有金屬材料與工程,2011,40(5):853~857.[Zhang Kunhua, Guan Weiming, Guo Junmei, Guo Junmei. Arc Erosion and Morphological Characters of Ag/Ni20 Fiber Electrical Composites by Severe Plastic Deformation[J]. Rare Metal Materials and Engineering,2011,40(5):853~857.]
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  • 收稿日期:2010-05-10
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