CAJ | 학술논문

为提高化学镀Ni-W-P镀层的耐蚀性和耐磨性,拓宽其应用,采用电化学方法和热处理等手段,研究了镀液中添加剂硝酸铈( Ce( NO3)3)的质量分数和热处理对化学镀Ni-W-P镀层的沉积速度、孔隙率、失重腐蚀速度、腐蚀电位、腐蚀电流、交流阻抗、显微硬度、摩擦系数等性能的影响。结果表明：添加1．0 wt%Ce(NO3)3时,所得镀层的沉积速度最大(36．5 g/m2·h),孔隙率最低(0．8个/cm2),耐腐蚀性能最好。镀层的组织均匀、致密、无缺陷和非晶态结构是其耐蚀性能高的重要原因。100~600℃热处理后,镀层硬度和耐磨性有所提高,而400℃热处理之后,合金显微硬度高达1100 HV,是镀态的1．8倍。
위제고화학도Ni-W-P도층적내식성화내마성,탁관기응용,채용전화학방법화열처리등수단,연구료도액중첨가제초산시( Ce( NO3)3)적질량분수화열처리대화학도Ni-W-P도층적침적속도、공극솔、실중부식속도、부식전위、부식전류、교류조항、현미경도、마찰계수등성능적영향。결과표명：첨가1．0 wt%Ce(NO3)3시,소득도층적침적속도최대(36．5 g/m2·h),공극솔최저(0．8개/cm2),내부식성능최호。도층적조직균균、치밀、무결함화비정태결구시기내식성능고적중요원인。100~600℃열처리후,도층경도화내마성유소제고,이400℃열처리지후,합금현미경도고체1100 HV,시도태적1．8배。
Aimed at improving the anti-corrosion and wear resistance of electroless plating Ni-W-P alloy coatings,the influences of La(NO3)3and heat treatment on the deposition rate,porosity,weightless corrosion rate,corrosion potential,corrosion current,elec-trochemical impedance spectroscopy( EIS) ,micro-hardness and friction coefficient of electroless plating Ni-W-P alloy coating,were investigated by using heat treatment and electrochemical methods,etc. The results show that the high deposition rate(36. 5 g/m2· h),low porosity(0. 8 hole/cm2)and good anti-corrosion properties of electroless plating Ni-W-P are obtained,when 1. 0 wt%Ce ( NO3 ) 3 is added into plating solution. The dense,uniform,defect-free,amorphous structure is the most important aspects to improve corrosion resistance of alloy coatings. By heat treatment at 100~600℃,the hardness and wear resistance of coatings are obviously improved. After being heat treated at 400℃,the micro-hardness of the alloy coating is as high as 1100 HV,which is 1. 8 times of the as-plated Ni-W-P alloy.