利用超声-脉冲电沉积法,在三价铬镀液中,添加羧酸盐-尿素配合剂和SiC纳米颗粒,制备了Cr/SiC复合镀层.研究了超声-脉冲工艺参数对纳米SiC复合量、镀层厚度的影响.利用电化学法分析了超声波对三价铬电沉积Cr/SiC复合镀层的电化学行为.结果表明,超声-脉冲作用均有利于基质金属铬的电沉积,从而提高镀层厚度及SiC复合量.利用SEM、XRD、和EDS分别对Cr/SiC复合镀层的表面形貌、微观结构和组成等进行表征.结果表明,采用该技术可制备厚度为13.5μm、SiC含量为5.5％的Cr/SiC纳米复合镀层.
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