论文部分内容阅读
采用超声波辅助脉冲电沉积方法,在40Cr钢表面制备Ni-Ti N纳米复合镀层,研究工艺参数对其粒子复合量的影响,并用扫描电镜(SEM)和能谱仪(EDS)对镀层的显微组织结构进行测试。结果表明:随着镀液中Ti N粒子浓度、阴极电流密度、超声波功率的增加,Ni-Ti N纳米复合镀层中的Ti N粒子复合量均呈先增加后减小的趋势;当Ti N粒子浓度为30 g/L、阴极电流密度为4 A/dm2、超声波功率为200 W时,Ni-Ti N纳米复合镀层表面粗糙程度较小、晶粒较为细致、组织均匀度较好,且Ti N粒子复合量达到最大值,为4.5%。
Ni-Ti N nano-composite coating was prepared on the surface of 40Cr steel by ultrasonic assisted pulse electrodeposition method to study the influence of process parameters on the particle composite content. The microstructure of the coating was observed by scanning electron microscope (SEM) and energy dispersive spectrometer (EDS) Organizational structure for testing. The results show that with the increase of Ti N concentration, cathode current density and ultrasonic power in the bath, the content of Ti N particles in Ni-Ti N nano-composite coating first increases and then decreases. When Ti N particles Ni-Ti N nanocomposite coating has a smaller surface roughness, more fine grains and better microstructure uniformity with a concentration of 30 g / L, a cathode current density of 4 A / dm2 and an ultrasonic power of 200 W. TiN The maximum amount of composite particles was 4.5%.