电刷镀Ni-石墨烯复合镀层的耐腐蚀性能  

Corrosion Resistance of Ni-graphene Composite Coatings by Electro-brush Plating

作　　者：金国[1] 丁小龙 胡振峰[2] 吕镖[2] 汪笑鹤[3] Jin Guo;Ding Xiaolong;Hu Zhenfeng;Lv Biao;Wang Xiaohe(Harbin Engineering University, Harbin 150001,China;National Engineering Research Center for Mechanical Product Remanufacturing, Academy of Armored Army Force, Beijing 100072,China;Huayin Weapon Test Centre in China, Huayin 714200,China)

机构地区：[1]哈尔滨工程大学,黑龙江哈尔滨150001 [2]陆军装甲兵学院机械产品再制造国家工程研究中心,北京100072 [3]中国华阴兵器试验中心,陕西华阴714200

出　　处：《稀有金属材料与工程》2019年第6期2002-2008,共7页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(5177512,51605491)

摘　　要：为了得到一种制备简便、耐腐蚀性能优良的用于舰船腐蚀防护的金属镀层,利用电刷镀技术在45#钢上制备出了Ni-石墨烯复合镀层。采用扫描电镜(SEM)、能谱仪(EDS)、原子力显微镜(AFM)、Raman光谱仪对石墨烯片层和镀层微观形貌进行了表征,采用电化学试验和浸泡实验对Ni-石墨烯复合镀层的耐腐蚀性能进行了研究。结果表明:石墨烯片层进入了Ni-石墨烯复合镀层;相比Ni镀层,Ni-石墨烯复合镀层质量更优;在电化学试验和浸泡实验中,发现Ni-石墨烯复合镀层与Ni镀层相比,前者的腐蚀电位较后者正移了70mV,前者的自腐蚀电流密度仅为后者的0.34倍,前者的电荷转移电阻为后者的3.1倍;在3.5%NaCl溶液中浸泡168h后,Ni-石墨烯复合镀层的失重量仅为Ni镀层的0.47倍,说明Ni-石墨烯复合镀层的耐腐蚀性能明显增强。In order to obtain a metal coating with excellent corrosion resistance by a simple preparation process applied to navy vessel corrosion protection, Ni-graphene composite coatings were grown on 45# steel substrates by electro-brush plating. Scanning electron microscope(SEM), energy dispersive spectrometer(EDS), atomic electron microscopy(AFM) and Raman spectroscopy were employed to characterize the morphology of graphene and the coatings. The corrosion resistance of Ni-graphene composite coatings was studied by electrochemical test and immersion experiments. Results show that the graphene layers enter the Ni-graphene composite coating;compared with Ni coating, Ni-graphene composite coating exhibits better quality. In electrochemical test and immersion experiments, we find that in the comparison between Ni-GE composite coating and Ni plating, the corrosion potential of the former moves positively by 70 mV, the corrosion current density of the former is only 0.34 times of that of the latter, and the charge transfer resistance of the former is 3.1 times of that of the latter. After immersion for 168 h in 3.5% NaCl solution, the mass loss of Ni-graphene composite coating is 0.47 times of Ni plating layer, indicating that the corrosion resistance of Ni-graphene composite coating is obviously enhanced.

关 键 词：舰船腐蚀防护 电刷镀 石墨烯 Ni-石墨烯复合镀层 耐腐蚀性 

分 类 号：TG174.441[金属学及工艺—金属表面处理] TQ153[金属学及工艺—金属学]