摘要
采用脉冲电沉积方法在A3钢表面制备了Ni-SiC纳米复合镀层。分别采用扫描电镜、摩擦磨损试验机及X射线衍射仪分析了镀层的磨损形貌、耐磨性及物相组成。结果表明:镀层的磨损量分别在电流密度为2.0 A/dm^2、脉冲占空比为40%、纳米SiC微粒的质量浓度为7 g/L时达到最小值。另外,在电流密度为2.0 A/dm^2、脉冲占空比为40%、纳米SiC微粒的质量浓度为7 g/L的条件下所得镀层的磨损形貌较好,磨损机制主要表现为磨粒磨损。在该条件下,Ni和SiC的衍射峰较宽,有利于细化晶粒,显著增强镀层的性能。
Ni-SiC nano-composite coatings were prepared on A3 steel by pulse electrodeposition.The wear morphology,wear resistance and phase composition of the coatings were analyzed by using scanning electron microscopy,friction wear testing machine and X-ray diffractometer.The results showed that the wear loss weight of Ni-SiC nano-composite coating reached the minimum value when current density was 2.0 A/dm^2,pulse duty cycle was 40%and mass concentration of SiC nano-particles was 7 g/L,respectively.The coating prepared under the conditions of current density 2.0 A/dm^2,pulse duty cycle 40%and mass concentration of SiC nano-particles 7 g/L has good wear morphology,and the main wear mechanism of this coating was abrasive wear.Under these conditions,the diffraction peaks of Ni and SiC were wide,which was conducive to the refinement of the grains and the remarkable enhancement of properties of the coating.
作者
张岩
马春阳
夏法锋
ZHANG Yan;MA Chunyang;XIA Fafeng(College of Electrical Information,Suihua University,Suihua 152000,China;College of Mechanical Science and Engineering,Northeast Petroleum University,Daqing 163318,China)
出处
《电镀与环保》
CAS
CSCD
北大核心
2019年第4期10-12,共3页
Electroplating & Pollution Control
基金
黑龙江省科学基金项目(LC2018020)
