低温退火对电刷镀纳米晶Ni-Co合金镀层性能的影响  

The Effects of Low Temperature Annealing on the Property of Brush Plated Nanocrystalline Ni-Co Alloy Coating

作　　者：郑炜铭[1] 戴品强[1,2] 唐电[1] 

机构地区：[1]福州大学材料科学与工程学院,福州350108 [2]福建工程学院材料科学与工程系,福州350108

出　　处：《中国表面工程》2010年第5期68-72,77,共6页China Surface Engineering

基　　金：国家863项目(2007AA03Z325);福建省自然科学基金资助项目(E0810006)

摘　　要：采用X射线衍射(XRD)、干滑动磨损、电化学分析等方法研究了低温退火(100～500℃)对电刷镀方法制备的纳米晶Ni–Co合金镀层的组织结构、耐磨性、耐蚀性的影响。结果表明:随着退火温度的升高,纳米晶Ni–44.16%Co合金镀层的晶粒尺寸逐渐增大,从原始晶粒尺寸12.7nm长大到500℃时的微米晶尺寸。合金镀层的显微硬度随退火温度的升高而提高,300℃退火后达到最大值,以后随加热温度的升高而急剧降低。纳米晶Ni–44.16%Co合金镀层的耐磨性300℃退火后最好,500℃以后急剧下降,与镀层显微硬度的变化密切相关。浸泡试验与电化学分析均表明纳米晶Ni–44.16%Co合金镀层在300℃退火后的耐蚀性优于其他温度,300℃以上退火耐蚀性随温度升高而下降。X-ray diffraction,dry sliding wear test,electrochemical analysis and other methods were used to investigate the effects of low temperature annealing on the microstructure,wear resistance,corrosion resistance of nano-crystalline Ni-Co alloy coating prepared by brush plating.The results show that as the annealing temperature rises,the grain sizes of nano-crystalline Ni-44.16 % Co alloy coating gradually increase from 12.7 nm to micrometer-grain size at 500 ℃.The micro-hardness of alloy coating increases with ...

关 键 词：电刷镀 纳米晶 低温退火 耐磨性 耐蚀性 

分 类 号：TG174.44[金属学及工艺—金属表面处理]