电沉积方式对Ni-SiC纳米镀层耐腐蚀性能的影响  

Effect of electrodeposition methods on corrosion resistance of Ni-SiC nanocomposite coatings

作　　者：夏法锋[1] 黄明[1] 马春阳[1] 尹红妍[1] 

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

出　　处：《功能材料》2013年第16期2429-2431,共3页Journal of Functional Materials

基　　金：国家科技支撑计划资助项目(2012BAH28F03);黑龙江省教育厅科学技术研究资助项目(12531084)

摘　　要：采用直流电沉积、脉冲电沉积和超声-脉冲电沉积方法,在45钢表面制备Ni-SiC纳米镀层。研究电沉积方式对Ni-SiC纳米镀层显微组织、成分及耐腐蚀性能的影响。结果表明,超声-脉冲电沉积Ni-SiC纳米镀层显微组织更加致密、光滑。直流电沉积镀层的镍粒径和SiC粒子的平均粒径为175.4和81.5nm;而超声-脉冲电沉积镀层的镍粒径和SiC粒子的平均粒径为74.8和36.3nm。SEM和EDS分析可知,电沉积方式对Ni-SiC纳米镀层的耐腐蚀性能有很大影响,超声-脉冲电沉积镀层的耐腐蚀性能较好。Ni-SiC nanocomposite coatings were prepared on 45 steel by direct current （DC）, pulse current （PC） and ultrasonic pulse electrodeposition （UPC） methods, respectively. The effect of processing methods on mi- crostructures, components and corrosion resistances was investigated. The results illuminate that the Ni-SiC coating synthesized by UPC deposition method possess a compact and exiguous morphology. The average grain size of Ni and SiC in Ni-SiC coatings prepared by DC method is 175.4 and 81.5nm, while that synthesized by UPC method is 74.8 and 36.3nm, respectively. SEM and EDS show that electrodeposition method has great in- fluence on the corrosion resistance of coatings, and the coating prepared by UPC deposition has better corrosion resistance than that by DC and PC deposition.

关 键 词：电沉积 Ni-SiC纳米镀层 腐蚀性能 

分 类 号：TG174[金属学及工艺—金属表面处理]