Nickel Formation on Graphite Sheet Surface for Improving Wettability with Magnesium Alloy

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  • Yao Youqiang
    Department of Mechanical Materials Engineering, Graduate School of Engineering, Hiroshima University
  • Xu Zhefeng
    Department of Mechanical Materials Engineering, Graduate School of Engineering, Hiroshima University
  • Sugio Kenjiro
    Department of Mechanical Materials Engineering, Graduate School of Engineering, Hiroshima University
  • Choi Yongbum
    Department of Mechanical Materials Engineering, Graduate School of Engineering, Hiroshima University
  • Kang Shaoming
    Department of Mechanical Materials Engineering, Graduate School of Engineering, Hiroshima University
  • Fu Ruidong
    State Key Laboratory of Metastable Materials Science and Technology, Yanshan University
  • Sasaki Gen
    Department of Mechanical Materials Engineering, Graduate School of Engineering, Hiroshima University

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抄録

Magnesium-calcium alloy-based composites reinforced with vapor grown carbon fibers (VGCFs) are supposed to possess satisfactory high-temperature applications. However, poor wettability of magnesium with carbon fiber is a technical problem encountered in fabrication of the composites. In order to cover the wetting problem, wetting behavior of magnesium alloys on graphite sheet, pure nickel, and nickel coated graphite sheet were investigated using sessile drop method. The graphite was non-wetting by both Mg-5Al alloy and Mg-5Al-3Ca alloy with contact angles about 120°. The droplet of magnesium alloys on nickel plate spread rapidly. Contact angle of Mg-5Al-3Ca alloy decreased from about 94° to 43°. Wettability of magnesium alloys on nickel coated graphite sheet was improved through the dissolution of nickel into the liquid magnesium alloy. Calcium addition showed negative effect on contact angle of nickel substrate, and also slightly hindered the spread of magnesium alloy droplet on nickel coated graphite sheet.

収録刊行物

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 56 (10), 1693-1697, 2015

    公益社団法人 日本金属学会

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