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Home > Technical support > 电镀锌镍铁合金的简介

电镀锌镍铁合金的简介

Release Date:2019-10-15 Content Comes From:http://jlwjdd.com/en/

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电镀锌镍铁合金的简介
锌镍铁合金镀层中镍含量10%左右,含铁3%~5%,其余为锌。镀层外观呈灰色,结晶细致,镀层经抛光后可直接套铬。该合金镀层在3%的氯化钠溶液中的腐蚀电位为-0.7313V,比铁的电位(-0.32V)负,因此,对于钢铁来说是属于阳极性镀层。
在盐雾试验、二氧化硫气体腐蚀试验和电镀车间暴露试验对比中,结果表明锌镍铁的耐蚀性与锌铜合金接近。但这种镀层套铬后比锌铜合金套铬者容易擦毛。这种合金镀层可作为日用五金等零件的防护-装饰的底层。

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