单脉冲电沉积Ni-纳米TiC-氧化石墨烯复合镀层结构及磨损性能  

Microstructure and Wear Resistance of Ni-nano TiC-GO Composite Coatings Based on Single Pulsed Electrodeposition

作　　者：任鑫[1] 王浩鑫 孙涛 王港 孟超 邱星武[2] REN Xin;WANG Haoxin;SUN Tao;WANG Gang;MENG Chao;QIU Xingwu(School of Materials Science and Engineering,Liaoning Technical University,Fuxin 123000,Liaoning,China;Multicomponent Alloys Key Laboratory of Deyang City,Sichuan College of Architectural Technology,Deyang 618000,Sichuan,China)

机构地区：[1]辽宁工程技术大学材料科学与工程学院,辽宁阜新123000 [2]四川建筑职业技术学院多组元合金德阳市重点实验室,四川德阳618000

出　　处：《材料导报》2024年第11期209-215,共7页Materials Reports

基　　金：国家自然科学基金(51805235);辽宁省教育厅科学研究经费项目(JYTMS20230790)。

摘　　要：本研究利用单脉冲电沉积技术在Q235钢表面制备了一种新型的Ni基减摩耐磨三元复合镀层,首先通过研究氧化石墨烯(GO)浓度对Ni-纳米TiC基复合镀层形貌、镀速及硬度的影响确定了最佳的GO添加量,然后利用X射线衍射仪(XRD)、拉曼光谱仪(Raman)和X射线光电子能谱仪(XPS)等设备对三元复合镀层的结构进行了表征。最后与Ni-纳米TiC复合镀层等进行了对比,研究了三元复合镀层的硬度及耐磨损性能。结果表明:镀液中GO的最佳质量浓度为200 mg/L。此时,Ni-纳米TiC-GO复合镀层的表面均匀致密,粗糙度值Ra=3.087μm。XRD和拉曼光谱等分析结果表明纳米TiC和GO成功复合到Ni基镀层之中。Ni-纳米TiC-GO复合镀层的硬度为726.3HV,约是Ni-纳米TiC复合镀层(463.8HV)的1.5倍。Ni-纳米TiC-GO复合镀层的平均摩擦系数为0.108,相比于Ni-纳米TiC复合镀层(0.285),其具备更好的减摩耐磨性能。In this study, a new type of Ni-based antifriction and wearable ternary composite coating was prepared on the surface of Q235 steel by single pulse electrodeposition technology. Firstly, the best GO addition was determined by studying the effect of the concentration of graphene oxide (GO) on the morphology, plating rate and hardness of Ni-nano TiC-based composite coating. Then, the structure of ternary composite coating was characterized by X-ray diffraction (XRD), Raman spectroscopy (Raman) and X-ray photoelectron spectroscopy (XPS). Finally, the hardness and wear resistance of ternary composite coating were studied by comparing with Ni-nano TiC composite coating. The results show that the optimal mass concentration of GO in the plating solution is 200 mg/L. At this time, the surface of Ni-nano TiC-GO composite coating is uniform and dense, and the roughness value R a is 3.087 μm. XRD and Raman spectra results show that nano TiC and GO are successfully incorporated into Ni-based coatings. The hardness of Ni-nano TiC-GO composite coating is 726.3HV, about 1.5 times that of Ni-nano TiC compo- site coating (463.8HV). The average friction coefficient of Ni-nano TiC-GO composite coating is 0.108, which has better friction reduction and wear resistance than Ni-nano TiC composite coating (0.285).

关 键 词：单脉冲 氧化石墨烯 Ni基复合镀层 微观结构 耐磨损性能 

分 类 号：TG174[金属学及工艺—金属表面处理]