硅对铁基合金耐液锌腐蚀的影响
Effect of Si on Corrosion Resistance of Iron-based Alloys in Molten Zinc
摘 要
采用扫描电镜(SEM)和能谱(EDS)分析对含硅和不含硅的铁基合金在450 ℃液锌中的腐蚀行为进行了研究.结果表明:在浸锌时间不长的情况下,不含硅的铁基合金的耐锌蚀能力较好,随着浸锌时间的延长,含硅的铁基合金表现出较好的耐锌蚀能力,基体中Si的加入,界面处液相中Si富集,使得ζ相生长方式接近线性生长,导致腐蚀产物中的ζ相呈粗大的柱状,且腐蚀层中Г相消失,ζ相优先在Fe-Zn界面形成.
金属间化合物
液锌
铁基合金
corrosion
intermetallic compound
molten zinc
iron-base alloy
Abstract
Effect of Si on corrosion resistance of iron-based alloys in 450 ℃ molten zinc was investigated.The scanning electron microscopy(SEM) and energy dispersive X-ray spectroscopy (EDS) were used to analyze the corrosion behavior of the iron-based alloys with and without Si in molten Zn.The results showed that the iron-base alloy without Si had better corrosion resistance at short time,but contrary at long time.There was a Si enrichment zone at the interface between alloy substrate and corrosion products,resulting in quick growth of the ζ phase with a coarse colummar shape.Г phase disappeared,ζ phase formed firstly at the interface of Fe-Zn.
中图分类号 TG172.6+1
所属栏目 试验研究
基金项目
收稿日期 2008/9/6
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引用该论文: ZHANG Yi,LI Hong-bo,LIU Jun-you. Effect of Si on Corrosion Resistance of Iron-based Alloys in Molten Zinc[J]. Corrosion & Protection, 2009, 30(10): 704～707
被引情况:
【1】李虹云,马瑞娜,曹晓明,李贺坤, "Fe-B共晶合金在锌液中的腐蚀行为",腐蚀与防护 31, 905-908(2010)
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参考文献
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