高磷NiP镀层的摩擦磨损性能模板.doc

文章编号：1671—7147()05—0566-03
化学镀高磷Ni—P镀层摩擦磨损性能
王政君， 赵永武
(江南大学机械工程学院，江苏无锡214122)
摘要：制备了一个高磷化学镀镍层并研究其表面形貌；讨论了其在不一样温度热处理后摩擦磨损性能，且和45钢进行了对比．结果表明，Ni—P镀层耐磨性显著优于45钢，且经500℃ 热处理后硬度最高，耐磨性最好，可作为耐磨性镀层．在此基础上对化学镀Ni—P镀层摩擦磨损机理进行了初步探讨，认为200℃热处理后关键表现为粘着磨损，500℃ 热处理后表现为磨料磨损和粘着磨损共存．
关键词：化学镀；高磷镀层；耐磨性中图分类号：TG174．44 文件标识码：A
Study on the Frictional and W ear Properties of High_P Electroless
Ni-P Coating
WANG Zheng—j un。 ZHAO Yong—WU。(School of Mechanical Engineering，Southern Yangtze University，W uxi 214122，China)Abstract：The research on the frictional and wear properties of high—P electroless Ni—P coatings is presented．Firstly，the morphology of Ni—P coated surface are investigated by using scanning
microscope．Then， the frictional coefficients and wear rates of Ni—P coated 45 steel which experiences different heat—treatment temperatures are measured and compared with those of 45 steel without surface coating． The results strongly indicate that the wear resistance of Ni—Pcoated 45 steeliS much better than that of 45 steel without surface coating．The results also show that the highest hardness and the best wear resistance of Ni—P coated 45 steel are obtained when it is heat—treated at 500℃ ．Finally。the present research makes a preliminary exploration of the possible wear mechanisms of Ni—P coated steel samples． It iS found that adhesive wear iS the dominant wear mechanism of Ni—P coating heat—treat