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Increasing the service life of Ce-Mn passivation solution for aluminum alloys by acetic acid and boric acid buffer system
Pages: 38-40
Year: Issue:  12
Journal: Electroplating & Finishing

Abstract: 一定量的醋酸可使Ce3+-MnO4-无铬钝化液的pH较长时间维持在2.2左右,同时不降低成膜质量.硼酸浓度为3.0mmol/L时,可维持钝化液在近一个月内不析出沉淀.将两者以n(醋酸):n(硼酸)=1:26混合加入时,钝化液的稳定性大幅提高.
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