| 表面状态和处理对涂层下A3钢腐蚀和涂层失效的影响 |
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| 引用本文： | 徐永祥,严川伟,高延敏等.表面状态和处理对涂层下A3钢腐蚀和涂层失效的影响[J].腐蚀科学与防护技术,2003,15(4):208-211. |
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| 作者姓名： | 徐永祥 严川伟 高延敏等 |
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| 作者单位： | 中国科学院金属研究所 金属腐蚀与防护国家重点实验室;沈阳 110016 |
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| 摘 要： | 采用模拟大气腐蚀装置，用挂片法研究了不同表面处
理和表面状态、不同湿度对涂层失效的影响.通过对基体金属的腐蚀形貌观察，微区元素分析，并结合傅利叶变换红外光谱(FTIR)，研究了金属在涂层下的腐蚀产物和涂层结构的变化.同时探讨了金属在涂层下的腐蚀和涂层失效机理.
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| 关 键 词： | 涂层 基体金属 表面处理 磷化 腐蚀 |
EFFECT OF SURFACE PREPERATIONS BEFORE COATINGS ON UNDERFILMCORROSION AND DEGRADATION OF COATINGS ON A3 STEEL |
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| Abstract: | Effect of various surface preperations before coating processes for A3 steel substrates,
including abrading with different emery-
papers,polishing,phosphating and nonphosphating on underfilm corrosion and degradation of the coatings were studied by means of exposure in simulated atmospheric corrosion settings.Blister-degree and rust
-degree of the samples were evaluated according to the ASTM d714 and D610 specif
ications respectively.The morphology of the surface after exposure was analysed
by SEM and the corrosion products and structure of the coatings were studied by
EDAX and FTIR.Mechanism of underfilm corrosion and degredation of the coatings was proposed. |
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| Keywords: | coatings substrate metal surface treatment phosphating corrosion |
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