摘要
采用复合电沉积技术在45钢基体上制备了Co-B4C复合镀层,对复合镀层的截面形貌和组织结构进行了观察分析,研究了镀液中B4C颗粒含量对复合镀层的显微硬度和摩擦磨损性能的影响。研究结果表明,B4C颗粒均匀地分布于Co基金属中,镀层与基体结合良好,无孔隙和裂纹等缺陷,镀态下镀层为晶态结构;随着镀液中B4C颗粒含量的增加,镀层的显微硬度和耐磨性也逐渐提高,且当镀液中B4C颗粒含量分别为20 g/L、15 g/L时,镀层的显微硬度和耐磨性达到最高值。
Co-B4C composite coatings was prepared on medium carbon steel（45） sheets by electrodeposition method.The cross-sectional morphology and microstructure of the composite coatings were studied,and influence of concentration of B4C particles in bath on mocro-hardness and wear resistance of composite coatings was investigated.It was shown that B4C particles homogeneously dispersed in entire Co film matrix,Co-B4C composite coating shows a good adhesion to substrate,and structure of Co-B4C composite coatings as deposited was crystalline.The results indicated that both micro-hardness and wear resistance of Co-B4C composite coatings increased with increasing B4C particles concentration in bath,but maximum hardness of coatings conflicted with optimal wear resistance of coatings achieved in same concentration of B4C particle.
出处
《煤矿机械》
北大核心
2011年第6期79-81,共3页
Coal Mine Machinery
关键词
复合电沉积
Co-B4C
显微硬度
耐磨性
composite electrodeposition
Co-B4C
micro-hardness
wear resistance
