【摘要】 在工程车活塞杆常用材料45#钢表面电沉积Ni-WC纳米复合镀层。分析了纳米复合镀层的表面形貌和物相结构,测试了纳米复合镀层的耐磨性和耐蚀性,并与45#钢的性能做比较。结果表明:纳米复合镀层表面较平整、均匀,结构较致密,主要由Ni相、WC相组成,Ni相的质量分数为81.25%,WC相的质量分数为6.53%,孔隙率低于0.5%,平均摩擦因数约为0.28;相同条件下,纳米复合镀层的腐蚀速率低于45~#钢的;纳米复合镀层能够提供有效的磨损防护和腐蚀防护,提高45~#钢的耐磨性和耐蚀性。更多还原

【Abstract】 Ni-WC nano-composite coating was electrodeposited on the surface of 45~# steel piston rod for engineering vehicle,the surface morphology and phase structure of nano-composite coating were analyzed,and the wear resistance and corrosion resistance of nano-composite coating were tested,and were compared with the properties of 45#steel.Results showed that nanocomposite coating featuring smooth surface and compact structure,it was mainly composed of Ni phase and WC phase,the mass fraction of Ni phase was 81.25%,and the mass fraction of WC phase was 6.53%.The porosity was less than 0.5%,and the average friction coefficient of nanocomposite coating was about 0.28.Under the same conditions,the corrosion rate of nanocomposite coating was lower than that of 45~# steel.Nano-composite coating can provide effective wear protection and corrosion protection,and then improve the wear resistance and corrosion resistance of 45~# steel.更多还原