Enhancement of corrosion resistance of high nickel austenitic ductile iron by laser surface treatment

被引:0
|
作者
Zeng, DW
Yung, KC
Xie, CS
机构
[1] Huazhong Univ Sci & Technol, State Key Lab Plast Forming Simulat & Mould Techn, Wuhan 430074, Hubei, Peoples R China
[2] Hong Kong Polytech Univ, Dept Mfg Engn, Kowloon, Hong Kong, Peoples R China
关键词
laser surface treatment; high nickel austenitic ductile iron; corrosion resistance;
D O I
暂无
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Laser surface treatment was used to enhance the corrosion resistance of a high nickel austenitic ductile iron in 0.1% hydrochloric acid solution. After laser treatment, the corrosion potential of the high nickel austenitic ductile iron increased to a more noble level and the corrosion current considerably decreased. This is believed due to a refinement of the coarse ledeburite eutectic at or near the austenitic grain boundary and elimination of the graphite spheroids in laser modified layer.
引用
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页码:133 / 141
页数:9
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