Galvalume在不同介质中腐蚀产物的形貌和成分分析对比及其对耐蚀性能的影响

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材料工程 ›› 2003, Vol. 0 ›› Issue (8) : 20-22.

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研究与应用

Galvalume在不同介质中腐蚀产物的形貌和成分分析对比及其对耐蚀性能的影响

主沉浮¹, 魏云鹤¹, 于萍¹, 郭晓玉², 刘秀玉¹, 王蕾蕾¹, 崔巍¹, 张长桥¹

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The Comparison of Structure and Composition of Corrosion Product for Galvalume in Different Solutions

ZHU Chen-fu¹, WEI Yun-he¹, YU Ping¹, GUO Xiao-yu², LIU Xiu-yu¹, WANG Lei-lei¹, CUI-Wei¹, ZHANG Chang-qiao¹

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摘要

利用二次电子成像技术分析了Galvalume镀层在NaCl,Na₂SO₄以及NaCl+Na₂SO₄介质中腐蚀产物的形貌,并用X射线衍射技术分析了各种腐蚀产物的化学组成.结果表明,在NaCl介质中的腐蚀产物主要为结构疏松的晶态物质,对镀层基本无保护作用;而在Na₂SO₄以及NaCl+Na₂SO₄介质中的腐蚀产物主要为结构致密的非晶态物质,对镀层具有较强的保护作用,说明SO₄^2-的存在是形成致密非晶产物的根本原因.

Abstract

The structure and composition of Galvalume in different solutions such as NaCl, Na₂SO₄ and NaCl+Na₂SO₄ were studied by electron micro-probe and X-ray diffractometer respectively. The results show that the corrosion product in NaCl solution is mainly crystal compound which is not protective to coating, the corrosion product in Na₂SO₄ and NaCl+Na₂SO₄ solution is mainly amorphous which is protective to coating. So the amorphous structure is caused by the existence of SO₄^2-.

导出引用

主沉浮, 魏云鹤, 于萍, 郭晓玉, 刘秀玉, 王蕾蕾, 崔巍, 张长桥. Galvalume在不同介质中腐蚀产物的形貌和成分分析对比及其对耐蚀性能的影响[J]. 材料工程, 2003, 0(8): 20-22

ZHU Chen-fu, WEI Yun-he, YU Ping, GUO Xiao-yu, LIU Xiu-yu, WANG Lei-lei, CUI-Wei, ZHANG Chang-qiao. The Comparison of Structure and Composition of Corrosion Product for Galvalume in Different Solutions[J]. Journal of Materials Engineering, 2003, 0(8): 20-22

中图分类号： TG17

参考文献

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