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1.发明授权Method for post-treatment of an article with a metallic surface as well as a treatment solution to be used in the method 失效具有金属表面的制品的后处理方法以及该方法中使用的处理溶液
公开(公告)号：US5607521A
公开(公告)日：1997-03-04
申请号：US244137
申请日：1994-05-13
摘要： A method and a treatment solution for posttreatment of an article with a metallic surface, where the metallic surface is made of one or more metals of a standard oxidation potential within the range -2.5 to +0.5 V. A thin coating is formed on the metallic surface by a treatment with an aqueous solution containing a molybdenum compound selected among molybdic acid and salts thereof in a concentration of 2.9 to 9.8 g/l calculated as molybdenum, as well as a compound capable of forming a heteropolymolydate, such as phosphoric acid, together with a molybdate. The treatment is performed under conditions where the metal surface is maintained at a potential within the range of -600 and -1800 mV/nhe. A corrosion-protecting and/or decorative effect is obtained which can be compared with the effect obtained by conventional chromate treatment, and which avoids the environmental and toxicologic drawbacks associated with the chromate treatment.
摘要翻译： PCT No.PCT / DK92 / 00328 Sec。 371日期1994年5月13日 102（e）日期1994年5月13日PCT提交1992年11月10日PCT公布。 公开号WO93 / 10278 日期：1993年5月27日一种用金属表面物品后处理的方法和处理液，其中金属表面由一种或多种标准氧化电位在-2.5至+0.5V范围内的金属制成。薄涂层为 在金属表面上通过用含钼钼化合物的水溶液处理，其中钼酸盐选自钼酸及其盐，其浓度按钼计算为2.9至9.8g / l，以及可形成杂多酸的化合物，例如 磷酸，以及钼酸盐。 处理在金属表面保持在-600和-1800mV / n范围内的电位的条件下进行。 获得了可以与通过常规铬酸盐处理获得的效果进行比较并且避免与铬酸盐处理相关的环境和毒理学缺点的腐蚀保护和/或装饰效果。
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