高希瑞,李恒青,刘洋赈

• 1:上海交通职业技术学院汽车工程学院
• 2:暨南大学先进耐磨蚀及功能材料研究院

摘要(Abstract)：

首先采用化学镀的方法在石墨表面镀Ni,随后采用快速热压方法制备10 mass%镀Ni石墨-铜基复合材料。在不同载荷下对复合材料开展了载流摩擦实验，采用扫描电镜观察了复合材料的磨损表面形貌，进而从磨损表面形貌特征分析其损伤机制。结果表明：在石墨表面成功镀覆了致密且均匀的Ni金属层，化学镀镍有效改善了石墨和铜之间的润湿性；镀镍石墨-铜基复合材料的相组成为石墨和铜基体两相，石墨在铜基体中呈弥散分布，未形成连续网状结构；随载荷的增加，复合材料的摩擦系数逐渐降低，磨痕宽度和磨损率逐渐升高，载流效率和载流稳定性逐渐下降；在低载荷下(20和40 N),复合材料的损伤机制以显微切削为主；随着载荷的增加(60和80 N),电侵蚀加剧，成为主要的损伤机制。

关键词(KeyWords)： 镀Ni石墨-铜基复合材料;载流摩擦;损伤机制;化学镀

Abstract:

Keywords:

基金项目(Foundation): 广东省基础与应用基础研究基金(2020A1515111067);; 浙江省教育厅科技项目(FG2019145)

作者(Author): 高希瑞,李恒青,刘洋赈

DOI: 10.13289/j.issn.1009-6264.2023-0239

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