镀层碳纤维增强铜基复合材料的制备及其性能研究  

Study on the preparation and performance of copper matrix composites reinforced coated carbon fiber

作　　者：冉旭[1] 邹豪豪 李乾 朱巍巍[1] RAN Xu;ZOU Haohao;LI Qian;ZHU Weiwei(School of Materials Science and Engineering,Changchun University of Technology,Changchun 130012,China)

机构地区：[1]长春工业大学材料科学与工程学院,吉林长春130012

出　　处：《长春工业大学学报》2022年第4期332-340,共9页Journal of Changchun University of Technology

基　　金：国家自然科学基金资助项目(51874043)。

摘　　要：采用化学镀工艺分别在碳纤维表面施加Cu层、Ni层或Cu+Ni镀层,对不同镀层碳纤维进行900℃热处理,使用真空热压烧结方法制备不同镀层碳纤维增强铜基复合材料。通过光学显微镜、扫描电子显微镜、能谱分析仪和X射线衍射仪对复合材料组织形貌、界面元素分布和物相进行分析,并对复合材料的物理及力学性能进行测试。结果表明,经过900℃高温处理,镀Cu层对碳纤维结构无影响,镀Ni层会造成碳纤维结构向石墨结构发生转变,在碳纤维表面Cu+Ni镀层可以有效地降低碳纤维发生结构转变。Cu+Ni镀层碳纤维增强的铜基复合材料较Cu镀层碳纤维及Ni镀层碳纤维增强的铜基复合材料具有更高的显微硬度和压缩强度,但导电性略低于镀Cu碳纤维增强的铜基复合材料。The Cu layer,Ni layer or Cu+Ni coating were applied to the carbon fiber surface by chemical plating process,and the carbon fibers of different coatings were heat treated at 850℃,and different coated carbon fiber reinforced copper matrix composites were prepared by vacuum hot pressing sintering method.The micromorphology,interface element distribution and phase of composite materials are analyzed by optical microscopy,scanning electron microscopy,energy spectrum analyzer and X-ray diffractometer,and the physical and mechanical properties of composite materials are tested.The results show that after 850℃high temperature treatment,the Cu plating layer has no effect on the carbon fiber structure,and the Ni layer will cause the carbon fiber structure to change to the graphite structure,and the Cu+Ni plating on the surface of the carbon fiber can effectively reduce the structural transformation of the carbon fiber.Cu+Ni coated carbon fiber reinforced copper matrix composites have higher microhardness and compressive strength than Cu coated carbon fibers and Ni coated carbon fiber reinforced copper matrix composites,but the electrical conductivity is slightly lower than that of Cu carbon fiber-plated copper matrix composites.

关 键 词：镀层碳纤维 铜基复合材料 热处理 

分 类 号：TB331[一般工业技术—材料科学与工程]