电刷镀镍–石墨烯复合镀层的制备及导热性能  

Preparation of nickel–graphene composite coating by electro-brush plating and its thermal conductivity

作　　者：胡振峰[1] 丁小龙 金国 徐滨士[3] HU Zhen-feng;DING Xiao-long;JIN Guo;XU Bin-shi(National Engineering Research Center for Mechanical Product Remanufacturing, Academy of Armored Army Force, Beijing 100072, China)

机构地区：[1]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 [2]哈尔滨工程大学材料科学与化学工程学院腐蚀科学与表面技术研究所,黑龙江哈尔滨150001 [3]陆军装甲兵学院装备再制造技术国防科技重点实验室,北京100072

出　　处：《电镀与涂饰》2017年第21期1117-1121,共5页Electroplating & Finishing

基　　金：国家自然科学基金(51605491;51005244)

摘　　要：采用电刷镀技术在45钢表面制备了镍-石墨烯(GE)复合镀层。镀液配方和工艺条件为:NiSO_4·6H_2O 220 g/L,CH_3COONH_4 40 g/L,(NH_4)_3C_6H_5O_7 45 g/L,GE 0.5 g/L,NH_3·H_2O 100~130 mL/L,十二烷基硫酸钠适量,pH 7.3~7.5,电压+12 V,镀笔速率10~12 m/min,时间5 min。采用扫描电镜(SEM)、能谱仪(EDS)、拉曼光谱仪、X射线衍射仪(XRD)和激光热导仪表征了Ni–GE复合镀层的微观结构、GE分布和导热性。与纯Ni镀层相比,Ni–GE复合镀层更致密,晶粒尺寸更小。复合电刷镀Ni–GE层的沉积速率(8.4μm/min)低于电刷镀Ni层的沉积速率(10.4μm/min)。Ni–GE复合镀层在25℃与100℃下的热导率较Ni镀层分别提高了11.5%和25.8%,导热性更优。A nickel-graphene(GE)composite coating was prepared on45steel surface by electro-brush plating.The bath composition and process conditions are as follows:NiSO4·6H2O220g/L,CH3COONH440g/L,(NH4)3C6H5O745g/L,GE0.5g/L,NH3·H2O100-130mL/L,suitable amount of sodium dodecyl sulfate,pH7.3-7.5,voltage+12V,moving rate of plating pen10-12m/min,and time5min.The microstructure and thermal conductivity of Ni-GE composite coating and the distribution of GE in it were characterized by scanning electron microscope(SEM),energy dispersive spectrometer(EDS),Raman spectrometer,X-ray diffractometer(XRD)and laser thermal conductivity meter.The Ni-GE composite coating is more compact and has smaller grain size than pure Ni coating.The deposition rate of Ni-GE composite electro-brush plating is8.4μm/min,lower than that of the Ni coating(10.4μm/min).The thermal conductivity of the Ni-GE composite coating is improved by11.5%at25°C and by25.8%at100°C as compared with the Ni coating.

关 键 词：电刷镀 镍 石墨烯 复合镀层 导热性 微观结构 

分 类 号：TQ153.2[化学工程—电化学工业]