摘要
Fe -Co -Ni合金镀层的硬度、耐蚀性和表面光亮度接近硬铬镀层 ,一定程度上可代替铬镀层以减少环境污染。用恒电位法电沉积Fe -Co -Ni三元合金 ,并运用X射线衍射能谱、扫描电镜等方法观察镀层的形貌 ,同时对镀层的失重率、显微硬度也进行了测定 ,分析了有机添加剂、温度、pH值和阴极控制电位等工艺因素对电沉积的影响。结果表明 :在一定量的有机添加剂下 ,若镀液温度为 5 0～ 6 0℃ ,pH值为 3.0～ 4 .5 ,阴极电位控制在 - 1.2V(vsSCE)时 ,即能得到光亮、耐腐蚀性好、显微硬度高的Fe -Co -Ni三元合金镀层 ,其综合性能接近硬铬镀层。
Fe-Co-Ni alloy plating can substitute the Cr plating to reduce environmental pollution to some extent for' its hardness, corrosion resistance and surface brightness near to hard Cr plating.Fe-Co-Ni alloy was deposited by potentiostatic methods. The morphology of plating was studied by using XRD and SEM, and the weight loss and mierohardness were also determined. Effects of organic additive, temperature, pH value and cathodic potential on electrodeposition were investigated. Results show that Fe-Co-Ni alloys with brightness, good corrosion resistance and high microhardness, can he obtained as solution temperature is 50～60℃, pH value is 3.0～4.5, cathodic potential is -1.2 V(vs.SCE), and with certain organic additive. The general performance of alloy plating is close to the hard chromium layer.
出处
《材料保护》
CAS
CSCD
北大核心
2004年第6期17-19,共3页
Materials Protection
基金
浙江省自然科学基金 (5 0 10 71)资助
