In-situ Observation of Growth Behavior of Fe-Zn Intermetallic Compounds at Initial Stage of Galvannealing Process

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<i>In-situ</i> observation was performed with X-ray diffraction technique using synchrotron radiation to reveal growth behavior of the Fe-Zn intermetallic compounds, the ζ and δ<SUB>1</SUB> phases, at the initial stage of galvannealing process. The galvanized sample and electroplated sample were used in the observation. The diffraction peak profiles were successfully obtained at intervals of 1 second with heating the sample, and the growth of the Fe-Zn intermetallic compounds was observed dynamically. In the galvanized sample including a small amount of aluminum in the coating, there was an incubation period of 7 seconds before the δ<SUB>1</SUB> phase started to grow. The thickness estimated with the peak intensity of the δ<SUB>1</SUB> phase increased in proportion to the square root of heating time when the incubation period was taken into account. In the electroplated sample including no aluminum in the coating, the thickness of ζ phase increased in proportion to the square root of heating time. The δ<SUB>1</SUB> phase started to grow as soon as the ζ phase occupied the entire coating. The thickness of the δ<SUB>1</SUB> phase also increased in proportion to the square root of heating time. These results suggest that that the growth behavior of the δ<SUB>1</SUB> phase at the initial stage of galvannealing is dominated by the interdiffusion between Fe and Zn, neither by interfacial reaction nor by autocatalytic reaction whether the coating contains aluminum or not.

収録刊行物

  • Materials transactions

    Materials transactions 45(7), 2326-2331, 2004-07-20

    公益社団法人 日本金属学会

参考文献:  17件中 1-17件 を表示

被引用文献:  2件中 1-2件 を表示

各種コード

  • NII論文ID(NAID)
    10013337475
  • NII書誌ID(NCID)
    AA1151294X
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13459678
  • NDL 記事登録ID
    7016048
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z53-J286
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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