| 镁合金预处理对其表面有机涂层耐蚀性的影响 |
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| 引用本文： | 查吉利,龙思远,宋东福,林伟鸿,石永敬. 镁合金预处理对其表面有机涂层耐蚀性的影响[J]. 材料保护, 2010, 43(7) |
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| 作者姓名： | 查吉利 龙思远 宋东福 林伟鸿 石永敬 |
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| 作者单位： | 重庆大学材料科学与工程学院,重庆,400044;东莞宜安电器制品有限公司,广东,东莞,523000 |
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| 基金项目： | 广东省教育部产学研结合项目，重庆市科技攻关项目，重庆市科技攻关项目 |
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| 摘 要： | 镁合金压铸件上涂覆有机涂层后的耐蚀性能与其涂装前的表面处理状态有着密切关系.采用中性盐雾试验和盐水浸渍法对经喷砂、打磨、无铬化学转化、微弧氧化4种不同表面预处理后的丙烯酸树脂涂层进行了耐蚀性测试.结果表明:采用合适的预处理能显著提高涂层的耐蚀性能,其中微弧氧化涂层耐蚀性最佳,在盐雾和盐水浸渍试验中失效时间分别达96 h和168 h;预处理后基材表面光滑的涂层失效形式以起泡为主,而具有微孔或粗糙表面的涂层则以点蚀为主.
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| 关 键 词： | 预处理 有机涂层 镁合金 丙烯酸树脂 耐蚀性 失效形式 |
Effects of Pretreatments on Corrosion Resistance of Magnesium Alloy Organic Coatings |
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| ZHA Ji-li,LONG Si-yuan,SONG Dong-fu,LIN Wei-hong,SHI Yong-jing. Effects of Pretreatments on Corrosion Resistance of Magnesium Alloy Organic Coatings[J]. Journal of Materials Protection, 2010, 43(7) |
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| Authors: | ZHA Ji-li LONG Si-yuan SONG Dong-fu LIN Wei-hong SHI Yong-jing |
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| Affiliation: | ZHA Ji-li1,LONG Si-yuan1,SONG Dong-fu1,LIN Wei-hong2,SHI Yong-jing (1. College of Material Science and Engineering,Chongqing University,Chongqing 400044,China,2. Dongguan Yian Electrical Products Company Ltd.,Dongguan 523000,China) |
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| Abstract: | The corrosion resistance of acrylic resin coatings on the surface of Mg alloys subjected to different pretreatments was evaluated by neutral salt spray tests and solution immersion tests. It was found that the corrosion resistance of the organic coatings could be improved significantly by adopting proper pretreatment of Mg alloy. The micro-arc oxidized coating showed the best corrosion resistance, with endurance to salt spray and solution immersion of 96 h and 168 h respectively. Besides, the coatings on sm... |
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| Keywords: | pretreatment organic coating magnesium alloy acrylic resin corrosion resistance failure mode |
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