摘要
首先采用纳米Al_2O_3颗粒对氧化石墨烯(GO)进行表面改性,然后利用脉冲电沉积技术在碳钢表面制备了Ni-W-GO-Al_2O_3复合镀层,采用扫描电镜、摩擦磨损试验机和电化学工作站等研究了复合镀层的形貌、组织结构及耐磨耐蚀性能。结果表明:Al_2O_3的加入抑制了GO团聚,有助于镀层组织均匀化;与单纯的Ni-W-GO镀层相比,Ni-W-GO-0.3Al_2O_3镀层表面平整、致密无裂纹,耐磨耐蚀性能最好;Al_2O_3添加量过低,起不到抑制GO团聚的效果;添加量过高,Al_2O_3发生自发团聚,形成大量裂纹,既降低镀层的耐蚀性,同时也降低耐磨性。
Firstly,the surface of graphene oxide(GO)was modified by nanometer Al2O3 particles,then the composite coatings of Ni-W-GO-Al2O3 were prepared on carbon steel surface by pulse electrodeposition,and the morphology,microstructure,wear resistance and corrosion resistance of the composite coatings were studied by means of scanning electron microscopy(SEM),friction and wear tester and electrochemical workstation.The results show that the addition of Al2O3 inhibits the agglomeration of GO and helps to homogenize the structure of the coatings,and compared with the Ni-W-GO coating,the surface of the Ni-W-GO-0.3 Al2O3 coating is more smooth,compact and free of cracks,and the wear resistance and corrosion resistance is the best.If the addition of Al2O3 is too low,the agglomeration of GO can not be inhibited.If the addition is too high,spontaneous agglomeration of Al2O3 will occur,resulting in a large number of cracks in the coatings,which not only reduces the corrosion resistance of the coatings,but also reduces the wear resistance of the coatings.
作者
田水昌
崔洪芝
张国松
王欢欢
TIAN Shui-chang;CUI Hong-zhi;ZHANG Guo-song;WANG Huan-huan(School of Materials Science and Engineering, Shandong University of Science and Technology , Qingdao 266590, China)
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2019年第2期140-147,共8页
Transactions of Materials and Heat Treatment
基金
国家高技术研究发展计划(863计划)(2015AA034404)
国家自然科学基金(51772176)
泰山学者攀登计划(tspd20161006)
