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    • 4. 发明申请
    • METHOD AND ARRANGEMENT FOR DEPOSITING A METAL COATING
    • 沉积金属涂层的方法和装置
    • WO2012004325A2
    • 2012-01-12
    • PCT/EP2011/061448
    • 2011-07-06
    • ATOTECH DEUTSCHLAND GMBHBRUCKNER, HelmutSKUPIN, AndreasLOWINSKI, ChristianSCHACHTNER, Bernhard
    • BRUCKNER, HelmutSKUPIN, AndreasLOWINSKI, ChristianSCHACHTNER, Bernhard
    • B05C11/00B05D1/18C23C18/1617C23C18/54
    • For the purpose of simplifying the processing of a bath a method for depositing a coating of a first metal onto a workpiece 12 which exposes a second metal is proposed which method comprises the following method steps: a) providing a bath liquid 16 containing bath components containing ions of the first metal to be deposited, at least one complexing agent for the second metal and at least one acid, b) depositing the coating of the first metal from the bath liquid 16 onto the workpiece 12, c) feeding the bath liquid 16 into a settling tank 18, d) cooling the bath liquid 16 in the settling tank 18 for the generation of a precipitate and of a filtrate, the precipitate being comprised of the second metal and the at least one complexing agent, f) returning the filtrate to the bath liquid 16 and g) replenishing bath components to the bath liquid 16. The method in accordance with the invention is characterised in that with respect to the separation of the precipitate from the filtrate a pressure difference is generated by the filter.
    • 为了简化浴的处理,提出了一种用于将第一金属的涂层沉积到暴露第二金属的工件12上的方法,该方法包括以下方法步骤:a)提供 包含含有待沉积的第一金属的离子的浴组分的浴液16,用于第二金属和至少一种酸的至少一种络合剂,b)将第一金属的涂层从浴液16沉积到工件12上 ,c)将浴液16供入沉淀罐18中,d)冷却沉淀罐18中的浴液16,以产生沉淀物和滤液,沉淀物由第二金属和至少一种 f)将滤液返回到浴液16中,和g)将浴液组分补充到浴液16中。根据本发明的方法的特征在于,关于沉淀物从fi中分离 ltrate过滤器产生压力差。