利用化学复合镀技术在钛基表面制备了含有石墨微粒的复合镀层.通过SEM、XRD、EDS、显微硬度仪和磨损测试等方法对镀后组织性能进行分析,讨论石墨微粒的加入对镀层结构、晶化过程及镀层性能的影响,并与Ni-P合金镀层进行对比.结果表明:镀态下镀层是胞粒状堆积形式、属非晶结构,石墨嵌入镀层胞状颗粒中,表面呈现鲜花团集状态;石墨微粒的加入使复合镀层晶化温度升高,晶化完成周期缩短;含有层状石墨微粒的复合镀层大大地提高了钛基表面的耐磨性.热处理后镀层中出现大量的TiC硬质增强相,提高了镀层硬度,400℃热处理后硬度达到1239HV0.2,是钛基体的5倍,也高于Ni-P合金镀层.
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