公开(公告)号：US5932082A

公开(公告)日：1999-08-03

申请号：US918017

申请日：1997-08-25

申请人： Thomas M. Harris ,  Jennifer Lyn Wilson

发明人： Thomas M. Harris ,  Jennifer Lyn Wilson

IPC分类号： C25D3/56 ,  G11B5/31 ,  H01F41/26 ,  C25D3/12

CPC分类号： H01F41/26 ,  C25D3/562 ,  G11B5/3106 ,  G11B5/3109 ,  G11B5/3163

摘要： An improved electroplating bath, complexing agent, product and method for producing nickel-rich nickel-iron alloys, such as Permalloy, having about 22% iron and 78% nickel. The improved electroplating bath contains a small amount of an organic amine complexing agent such as ethylenediamine or diethylenetriamine which increases the nickel/iron mass ratio of the deposit, causes nickel to be deposited in favor of iron, reduces the sensitivity of the deposit composition to the iron content of the bath and the applied current density. Further, the pH of the bath is adjusted to about 5.0 to stabilize the complexes and tartaric acid is added to complex ferric ion and thus prevent its precipitation. The organic amine complexing agents useful in accordance with the present invention are agents which complex with nickel and include ethylenediamine and diethylenetriamine each having at least two amine groups with each of the amine groups separated by two carbons.

摘要翻译： 一种改进的电镀浴，络合剂，产品和生产富镍镍铁合金的产品和方法，例如坡莫合金，具有约22％的铁和78％的镍。 改进的电镀浴含有少量的有机胺络合剂如乙二胺或二亚乙基三胺，这增加了沉积物的镍/铁质量比，导致镍沉积有利于铁，降低了沉积组分对 浴的铁含量和施加的电流密度。 此外，将浴的pH调节至约5.0以稳定络合物，并将酒石酸加入到复合铁离子中，从而防止其沉淀。 根据本发明有用的有机胺络合剂是与镍复合并包括乙二胺和二亚乙基三胺的试剂，它们各自具有至少两个胺基，每个胺基被两个碳分开。