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Influence of boron concentration on the corrosion resistance of high boron white cast iron to liquid zinc bath

  • Shengqiang Ma
  • , Jiandong Xing
  • , Dawei Yi
  • , Jianjun Zhang
  • , Shengchao Ma
  • , Guofeng Liu
  • Xi'an Jiaotong University
  • Chang'an University

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

The influence of boron concentration on corrosion resistance of high boron white cast iron dipped into a pure liquid zinc bath at 460°C was investigated. The results reveal that high boron white cast iron containing 3.5 wt.%B exhibits excellent corrosion resistance due to the dense continuous netlike or parallel Fe2B phase which hinders the Fe/Zn interface reaction. The corrosion rate decreases significantly when the boron concentration increases, but the corrosion rate declines slightly when the boron concentration exceeds 3.5wt.%. EDS results indicate the coarse and compact δ phase generated near the matrix and a large amount of massive and blocky ζ phase occurred close to the liquid zinc. The corrosion process includes Fe/Zn interface reaction and the spalling and fracture of Fe2B. The failure of Fe2B is mainly caused by the microcrack of phase transformation.

源语言英语
主期刊名Science and Processing of Cast Iron IX
出版商Trans Tech Publications Ltd
219-224
页数6
ISBN(印刷版)9780878492275
DOI
出版状态已出版 - 2011
活动9th International Symposium on Science and Processing of Cast Iron, SPCI-9 - Luxor, 埃及
期限: 10 11月 201013 11月 2010

出版系列

姓名Key Engineering Materials
457
ISSN(印刷版)1013-9826
ISSN(电子版)1662-9795

会议

会议9th International Symposium on Science and Processing of Cast Iron, SPCI-9
国家/地区埃及
Luxor
时期10/11/1013/11/10

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