| 铝及其合金化学导电氧化生产工艺介绍(Ⅲ) |
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| 引用本文： | 储荣邦,储春娟.铝及其合金化学导电氧化生产工艺介绍(Ⅲ)[J].材料保护,2004,37(8):56-57. |
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| 作者姓名： | 储荣邦 储春娟 |
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| 作者单位： | 南京船舶雷达研究所,江苏,南京,210003 |
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| 摘 要： | 2化学导电氧化膜的老化后处理 铝件铬酸盐转化膜的主要成分是三价铬与六价铬组成的化合物及铝的铬酸盐,膜层中三价铬与六价铬组成含水的复合物.三价铬的复合物是膜的不溶部分,可使膜具有一定硬度,同时也影响膜的耐蚀性.膜形成之初与尚未干燥时呈无定形状态和凝胶状,其硬度甚低,并具有吸附能力;干燥后,膜层变硬且难以润湿.同时,对铝来说,膜层经过50 ℃处理后,膜层中可溶解的部分六价铬化合物转化为难溶的铬酸化合物,使膜层坚固.随着温度升高,膜层会出现少量裂纹,对抗蚀性和电导性均不利.铝的铬酸盐转化膜在60℃以上处理时,膜层硬化会出现裂纹,导致抗蚀性能下降.因此,浸热水或烘干时温度都不宜超过50℃.
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| 关 键 词： | 化学导电氧化 铝及其合金 转化膜 耐蚀性 |
| 文章编号： | 1001-1560(2004)08-0056-02 |
Chemical Conductive Oxidation of Aluminum and Its Alloys |
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| CHU Rong-bang,CHU Chun-juan.Chemical Conductive Oxidation of Aluminum and Its Alloys[J].Journal of Materials Protection,2004,37(8):56-57. |
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| Authors: | CHU Rong-bang CHU Chun-juan |
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| Abstract: | Aluminum parts will possess improved corrosion resistance and conductivity by chemical conductive oxidation , which also can prevent electromagnetic interfere on electronic fixing with aluminum. Particular introduction was presented including process and formula of chemical conductive oxidation, components and effect of oxidation solution, forming mechanism of conductive oxidation film, preparation and maintain of chemical oxidation solution, effects of operation conditions on the conductive film, pretreatment and aftertreatment, as well as trouble shooting method. Also the conductive, anticorrosive and coating properties were discussed. |
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| Keywords: | chemical conductive oxidation aluminum and its alloys conversion coating corrosion resistance |
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