積層クラッドを用いたMoおよびNbに対するアルミナイド被膜の作製 Development of Aluminide Coatings for Mo and Nb Alloys Using by Lamination Cladding

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著者

    • 澄 郁夫 SUMI Ikuo
    • 松江工業高等専門学校機械工学科 Department of Mechanical Engineering, Matsue National College of Technology

抄録

  In order to improve the oxidation resistances of Mo and Nb alloys, aluminide coatings were developed by lamination cladding. Mo, Nb, and Al sheets with a purity of 99.99 wt% and dimensions of 15 mm×10 mm×0.5 mm were prepared by cutting, followed by the development of a specimen piece by holding the Al sheet between two sheets of Mo or Nb. The specimen wrapped with a Ta foil to prevent oxidation was heated at temperatures of the order of the melting point of Al in a pure Ar atmosphere. On the basis of the elemental analysis by characteristic X-rays, the laminated layers formed on the Mo substrates were found to be composed of MoAl<sub>5</sub>, MoAl<sub>4</sub>, and Mo<sub>3</sub>Al<sub>8</sub>. It was also found that the main phase constituting the laminated layers changed from MoAl<sub>5</sub> to Mo<sub>3</sub>Al<sub>8</sub> on increasing the temperature from 973 K to 1473 K. In contrast, NbAl<sub>3</sub> was singly formed on the Nb substrate, irrespective of the heating temperatures. However, since NbAl<sub>3</sub> grains have a spherical shape, the NbAl<sub>3</sub> layer was not formed on the Nb substrate.<br>

収録刊行物

  • 日本金屬學會誌 = Journal of the Japan Institute of Metals  

    日本金屬學會誌 = Journal of the Japan Institute of Metals 72(6), 457-463, 2008-06-01 

    The Japan Institute of Metals

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各種コード

  • NII論文ID(NAID)
    10021150597
  • NII書誌ID(NCID)
    AN00062446
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    00214876
  • NDL 記事登録ID
    9540668
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-314
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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