B_4C含量对Ni-Co/B_4C复合镀层硬度及耐磨性的影响  

Influence of B_4C Content on Hardness and Wear Resistance of Ni-Co/B_4C Composite Coating

作　　者：孙万昌[1] 苗春雨[1] 张磊[2] 丁晋[1] 侯嵬玮[1] 

机构地区：[1]西安科技大学材料科学与工程学院,西安710054 [2]中国船舶重工集团公司第十二研究所,陕西兴平713102

出　　处：《煤矿机械》2011年第8期52-54,共3页Coal Mine Machinery

摘　　要：采用复合电沉积的方法制备出Ni-Co/B4C复合镀层。利用光学显微镜、XRD衍射等方法分析了复合镀层的微观形貌及相结构。结果表明,所制备的Ni-Co/B4C复合镀层均匀致密,基体界面结合良好,B4C颗粒分布均匀,镀态下镀层为晶态结构。研究了镀液中B4C颗粒含量对复合镀层硬度及耐磨性的影响,随着镀液中B4C颗粒含量的增加,Ni-Co/B4C复合镀层的显微硬度和耐磨性能均明显提高。Ni-Co/B4C composite coating was prepared on medium carbon steel （45） sheets by electrodeposition method. The cross-sectional morphology and microstructure of composite coatings were studied by optical microscope, X-ray diffraction （XRD）. It was shown that BaC particles homogeneously dispersed in entire Ni-Co film matrix, and structure of Ni-Co/BaC composite coatings as deposited was crystalline. The influence of concentration of BaC particles in bath on micro-hardness and wear resistance of composite coatings was investigated. The results indicated that both micro- hardness and wear resistance of Ni-Co/B4C composite coatings increased with increasing B4C particles concentration in bath.

关 键 词：复合电沉积 Ni-Co/B4C 显微硬度 耐磨性 

分 类 号：TG174.441[金属学及工艺—金属表面处理]