無電解ニッケル-リン合金めっき皮膜の耐食性に及ぼす上層スズめっきの影響 Tin Overlayer Fffect on Corrosion Resistance of Electroless Nickel-Phosphorus Alloy Plating Films

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著者

    • 園田 司 SONODA Tsukasa
    • 兵庫県立工業技術センター機械金属工業指導所 Hyogo Pref. Inst. of Ind. Res., Technical Center for Machinery and Metals
    • 林 行信 HAYASHI Yukinobu
    • 兵庫県立工業技術センター機械金属工業指導所 Hyogo Pref. Inst. of Ind. Res., Technical Center for Machinery and Metals

抄録

Electroless nickel-phosphorus alloy was plated on steels, and tin plated on top of these. Double-plating films were analyzed by glow discharge emission spectrometry (GDS) before and after heat treatment. Effects of heat treatment on X-ray diffraction patterns, anodic polarization curves, and corrosion resistance were investigated compared to electroless nickel-phosphorus alloy films. Anodic polarization currents for tin/electroless nickel-phosphorus alloy double-plating films were greatly suppressed by heat treatment at 400°C. X-ray diffraction measurements confirmed the formation of intermetallic tin-nickel compounds after heat treatment. Current values were assumed suppressed due to formation of these compounds.<br>GDS results showed that film surfaces were blue due to nickel oxides forming on them in heating electroless nickel-phosphorus alloy films at 400°C in an atmosphere. Electroless nickel-phosphorus alloy films with a tin overlayer did not show this color, however, because intermetallic tin-nickel compounds formed on the film surface. CASS tests showed that electroless nickel-phosphorus alloy films with a tin overlayer were superior in corrosion resistance to films without this overlayer.

収録刊行物

  • 表面技術 = The Journal of the Surface Finishing Society of Japan  

    表面技術 = The Journal of the Surface Finishing Society of Japan 49(6), 613-617, 1998-06-01 

    The Surface Finishing Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002109597
  • NII書誌ID(NCID)
    AN1005202X
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09151869
  • NDL 記事登録ID
    4502329
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-291
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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