摘要
用电沉积的方法在含NiSO4及FeSO4的电解质溶液中制备了Ni-Fe-SiC复合镀层。通过正交试验，研究了Fe^2＋与Ni^2＋的浓度比、温度、pH和电流密度对镀层中SiC质量分数的影响，讨论了镀液中SiC含量与镀层显微硬度的关系，确定了最佳工艺条件为：c（Fe^2＋）／c（Ni^2＋）=0.09，镀液温度55℃，DH=3．0，电流密度1.8A／dm^2。在最佳工艺条件下所获得的复合镀层，显微硬度达650-850HV，结合力和耐蚀性均良好。
A Ni-Fe-SiC composite coating was prepared by electrodeposition from a bath containing NiSO4 and FeSO4. The effects of the concentration ratio of Fe^2＋ to Ni^2＋, temperature, pH and current density on the mass fraction of SiC in composite coating were studied by orthogonal test. The relationship between the content of SiC in plating bath and the microhardness of composite coating was discussed. The optimal process conditions were determined as follows： c （Fe^2＋）/c （Ni^2＋） ratio 0.09, temperature 55 ℃, pH 3.0, and current density 1.8 A/dm^2. The Ni-Fe-SiC composite coating obtained under optimal process conditions has a microhardness ranging from 650 HV to 850 HV, and features good adhesion strength and corrosion resistance.
出处
《电镀与涂饰》
CAS
CSCD
2008年第8期8-10,共3页
Electroplating & Finishing
关键词
镍铁合金
碳化硅
复合镀层
电沉积
正交试验
显微硬度
nickel-iron alloy
silicon carbide
composite coating
electrodeposition
orthogonal test
microhardness
