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    • 10. 发明授权
    • Method of surface treatment for aluminum or aluminum alloy
    • 铝或铝合金表面处理方法
    • US08414711B2
    • 2013-04-09
    • US12544304
    • 2009-08-20
    • Hiroki UchidaKazuki YoshikawaToshiaki Shibata
    • Hiroki UchidaKazuki YoshikawaToshiaki Shibata
    • B05D3/10
    • C25D5/44C23C18/54C25D3/22
    • A workpiece including aluminum or an aluminum alloy on a surface thereof is subjected to surface treatment including the steps of immersing in an acidic or alkaline aluminum oxide film-removing solution containing a salt or oxide of a metal capable of substitution with aluminum and forming a substituted metal layer and contained in the removing solution on a surface of the aluminum or aluminum alloy while removing an aluminum oxide film on aluminum or aluminum alloy surface, forming a substituted zinc film by zinc substitution treatment without removing the substituted metal layer, removing the substituted metal layer and substituted zinc film with an oxidizing liquid, and subjecting again to zinc substitution treatment, forming a substituted zinc film.
    • 在其表面上包括铝或铝合金的工件进行表面处理,包括将含有能够被铝取代的金属的盐或氧化物的酸性或碱性氧化铝膜去除溶液浸渍并形成取代的 金属层,并且在除铝或铝合金表面上的铝氧化物膜的同时,在铝或铝合金的表面上包含在除去溶液中,通过锌取代处理形成取代的锌膜而不去除取代的金属层,除去取代的金属 层和取代的锌膜与氧化液体接触,再次进行锌替代处理,形成取代的锌膜。