张春杰,应丽霞,吴云龙,王桂香

• 1:哈尔滨工程大学机电工程学院
• 2:哈尔滨工程大学材料科学与化学工程学院

摘要(Abstract)：

采用溶胶-凝胶法制备了Al_2O_3溶胶,并用表面活性剂对氧化石墨烯颗粒进行改性,通过透射电镜(TEM)对Al_2O_3溶胶、石墨烯分散液在镀液中的分散情况进行了表征。然后采用电刷镀技术在优质合金钢表面制备了Ni-P/Al_2O_3/石墨烯复合刷镀层,对制备的Ni-P/Al_2O_3/石墨烯涂层进行100～500℃的热处理,利用扫描电镜(SEM)、显微硬度计、电化学工作站和摩擦磨损试验机等研究了其微观形貌、力学及摩擦学性能。结果表明:Al_2O_3溶胶和改性后的石墨烯分散液在复合镀液中具有良好的分散性和稳定性。当热处理温度达到400℃时,Ni-P/Al_2O_3/石墨烯镀层表面致密、未出现裂纹,显微硬度高达869.8 HV0.2,耐磨性最佳,其平均摩擦系数为0.11,表明热处理有效改善了Ni-P/Al_2O_3/石墨烯复合涂层的磨损性能和摩擦系数。同时,经热处理后复合镀层的耐腐蚀性能比镀态好。

关键词(KeyWords)： 电刷镀;热处理;组织结构;摩擦学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52075112);; 黑龙江省自然科学基金(JJ2019LH1520)

作者(Author): 张春杰,应丽霞,吴云龙,王桂香

DOI: 10.13289/j.issn.1009-6264.2020-0433

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