铝合金木纹型材腐蚀失效原因分析
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摘要
为了查明木纹型材的失效原因,利用电子探针、金相显微镜、能谱仪、直读光谱仪等对腐蚀穿孔失效的6063铝合金木纹型材进行分析。结果表明:由于木纹型材表面长时间与潮湿的砂浆接触,使得碱性溶液能够透过木纹型材带有微观缺陷的表面涂层而腐蚀铝合金基体,最终使得木纹型材发生腐蚀失效。
In order to find out the failure reasons of wood grain profiles,the wood grain profiles of 6063 aluminum alloy with corrosion perforation failure was analyzed by the electron probe,metallographic microscope,energy dispersive spectrometer,direct reading spectrometer and so on. Results showed that because the surface of the wood grain profiles was exposed to wet mortar for a long time,alkaline solution could corrode the aluminum alloy substrate through the wood grain profile surface coating with microscopic defects,which eventually caused the corrosion failure of the wood grain profiles.
In order to find out the failure reasons of wood grain profiles,the wood grain profiles of 6063 aluminum alloy with corrosion perforation failure was analyzed by the electron probe,metallographic microscope,energy dispersive spectrometer,direct reading spectrometer and so on. Results showed that because the surface of the wood grain profiles was exposed to wet mortar for a long time,alkaline solution could corrode the aluminum alloy substrate through the wood grain profile surface coating with microscopic defects,which eventually caused the corrosion failure of the wood grain profiles.
引文
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[2]余泉和.木纹铝材生产工艺及质量控制[J].电镀与涂饰,2006(5):45-46.
[3]徐金来,罗韦因,刘钧泉.铝及铝合金仿木纹着色技术[J].表面技术,2006(1):47-49.
[4]徐金来.铝及铝合金仿木纹着色技术:2005’(贵阳)表面工程技术创新研讨会论文集[C].[出版地不详]:中国电工技术学会电镀涂敷专业委员会、贵州省机械工程学会表面工程分会、贵阳电镀协会,2005:5.
[5]杨育才,陈刚,汪蛟.铝型材彩色木纹转化膜形成机理与生产实践[J].轻合金加工技术,2002(4):50-51.
[6]肖鑫,龙有前.建筑铝型材木纹化工艺[J].材料保护,1997(1):36-37.
[7]南聿顺.铝型材木纹技术的应用[J].有色金属加工,1995(5):24-25.
[8]宁福元.铝制品的木纹着色法综述[J].轻合金加工技术,1985(9):39-42.
[9]钟坤.固溶时效处理对6063铸态铝合金硬度的影响[J].山东工业技术,2017(1):23-24.