工艺参数对Ni-SiC纳米镀层SiC粒子复合量的影响  

Effect of process parameters on SiC particle content in Ni-SiC nanocoatings

作　　者：李孟龙 周瑞芬[1] 马春阳[1] 程国锋 

机构地区：[1]东北石油大学机械科学与工程学院,黑龙江大庆163318 [2]川庆钻探公司长庆石油工程监督公司,西安710021

出　　处：《功能材料》2017年第9期9189-9191,9196,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51474072)

摘　　要：采用超声波辅助电沉积方式,在45钢表面制备了Ni-SiC纳米复合镀层。根据阴极电流密度、PH值和搅拌速度对Ni-SiC纳米复合镀层SiC粒子复合量的影响,获取Ni-SiC纳米复合镀层最佳条件的工艺参数;并利用扫描电镜(SEM)、高分辨率透射电镜(HRTEM)研究工艺参数对Ni-SiC纳米复合镀层表面形貌和微观组织结构的影响。结果表明,获取Ni-SiC纳米复合镀层最佳工艺参数为阴极电流密度6A/dm^2,pH值=4,搅拌速度300r/min。由最佳工艺参数制得的Ni-SiC纳米复合镀层表面呈胞状,SiC粒子粒径尺寸较小,其平均粒径为21.5nm。Ni SiC nanocoatings were deposited on the surface of 45 steel by using ultrasonic assisted pulse electrodeposition method. The optimal process parameters can be obtained by analyzing the effect of current density, pH and mixing speed on SiC particle content in Ni SiC nanocoatings. The effect of process parameters on the surface topography and microstructure of the coatings was investigated by scanning electron microscopy （SEM） and high-resolution transmission electron microscopy （HRTEM）. The results indicate that the optimal process parameters are current density 6 A/dm^2 , pH 4 and mixing speed 300 r/min. The surface of Ni-SiC nanocoatings is cellular and SiC particles is small with the average particle size of 21.5 nm.

关 键 词：Ni—SiC 纳米镀层 工艺参数 复合量 

分 类 号：TG156.73[金属学及工艺—热处理]