氧化石墨烯浓度对镍基/石墨烯复合材料摩擦性能、耐蚀性能及显微硬度的影响  

Effect of Graphene Oxide Concentration in Nickel Electrolyte on Mechanical and Corrosion Performance of Nickel-Graphene Composite Coatings

作　　者：张倩[1] 任彦虹 李娟[1] 董楠[1] 何燕[1] 许航[1] 韩培德[1] 

机构地区：[1]太原理工大学材料科学与工程学院新材料界面科学与工程教育部重点实验室,太原030024

出　　处：《腐蚀科学与防护技术》2017年第1期21-26,共6页Corrosion Science and Protection Technology

基　　金：国家自然科学基金(51371123);高等学校博士学科点博导基金(2013140211003);山西省自然科学基金(2014011002);大学生科技创新项目(8003-02030381)~~

摘　　要：将氧化石墨烯置于镀镍液中,采用直流电沉积技术制备了镍基/石墨烯复合材料,并用拉曼光谱、X射线衍射分析了其结构。结果表明,电沉积过程中氧化石墨烯已经被还原为石墨烯,添加石墨烯后复合材料的择优生长取向从(200)变为了(111)。当氧化石墨烯的浓度在0.02~0.04 g/L范围时,复合材料的显微硬度随着浓度增加显著提高。石墨烯的引入可提高镍基/石墨烯复合材料的耐磨性;随着氧化石墨烯浓度的提高,镍基/石墨烯复合材料的耐磨性提高。当电流密度为1.8 A/dm2时,镍基/石墨烯复合材料表现出了最好的耐蚀性。Graphene/nickel composite coatings on copper were prepared by direct current electrodeposition in a nickel sulfate solution with graphene oxide（GO）. Raman spectra demonstrated that the graphene oxide had been reduced to graphene during the electrodeposition process. X-ray diffraction patterns showed that the preferred orientation of the deposited nickel changed from（200） for the deposited simple Ni to（111） for that coupled with graphene; the hardness of the composites was significant enhanced due to the incorporation of graphene, and the hardness reached a maximum when the nickel electrolyte with graphene oxide in a range of 0.02-0.04 g/L. It was also demonstrated that the presence of graphene could enhance the wear resistance of the deposited composites. Besides, the composite deposited by a current density 1.8 A/dm2 showed the best corrosion resistance.

关 键 词：镍基/石墨烯复合材料 电沉积 耐磨性 硬度 耐蚀性 

分 类 号：TF764[冶金工程—钢铁冶金]