摘要
采用电沉积法制备Fe 36%Ni磁性合金。通过正交实验研究了nFe2+/nNi2+、电流密度、镀液pH值、镀液温度与合金中铁含量的关系,用极差法分析了各工艺参数对Fe Ni合金镀层成分的影响,并确定了最佳工艺条件为nFe2+/nNi2+0 6,镀液pH值3 5,施镀温度65℃,阴极电流密度6A/dm2。实验结果表明,合金镀液中nFe2+/nNi2+较大,电流密度增加,pH值升高,均有利于镀层Fe含量的提高。实验所得合金镀层光亮、致密、外观平整,显微结构是层状,镀层中wFe为64 1%,wNi为35 9%,符合Fe 36%Ni合金成分设计要求。
<Abstrcat> A Fe-36%Ni magnetic alloy was prepared by electroplating. The relationship between content ratio of ferrous ion to nickel ion, current density, temperature, pH value of the bath with iron content of Fe-Ni alloy was studied by using orthogonal experiment. The influence of various technological parameters on alloy deposit components was analysed. The optimum process conditions of Fe-36%Ni alloy electroplating are as follows: content ratio of ferrous ion to nickel ion of 0.6, pH value of 3.5, temperature of 65 ℃, current density of 6 A/dm^2. The test results show that a higher content ratio of ferrous ion to nickel ion, current density and pH value help to increase the Fe content in coating. The deposit obtained with above method is bright, compact and smooth, and has layered microstructure. The content of Fe in the deposit is 64.1% by weight and Ni, 35.9%, and is up to the design requirement of Fe-36%Ni alloy components.
出处
《电镀与涂饰》
CAS
CSCD
2005年第6期17-21,共5页
Electroplating & Finishing
