電磁特性に着目した片状黒鉛鋳鉄の黒鉛組織の非破壊評価 Electromagnetic Nondestructive Evaluation of Graphite Structures of Flake Graphite Cast Irons

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  This paper discusses the feasibility of characterization of graphite morphology and size in flake graphite cast irons based on electromagnetic nondestructive methods. Several flake graphite cast iron specimens whose graphite form and size are different variously were prepared, and their electromagnetic properties such as conductivity and relative permeability were evaluated systematically. The results showed that both conductivity and relative permeability depend mainly on the form and size of graphite. Especially, the conductivity has a good correlation with form and size of graphite independently from the pearlite ratio of matrix. The conductivity was found to be correlated highly with ultrasonic velocity, and the ultrasonic velocity was found to be highly correlated with amount and size of graphite. Therefore, measurement of conductivity and permeability can be considered to be well applicable to evaluate form and size of graphite in flake graphite cast irons. Focusing on the fact, DC potential drop method was applied to evaluation of graphite form and its capability was evaluated.

収録刊行物

  • 鋳造工学 = Journal of Japan Foundry Engineering Society  

    鋳造工学 = Journal of Japan Foundry Engineering Society 80(4), 213-218, 2008-04-25 

    Japan Foundry Engineering Society

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各種コード

  • NII論文ID(NAID)
    10021162000
  • NII書誌ID(NCID)
    AN10514770
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    13420429
  • NDL 記事登録ID
    9479889
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-277
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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