不同构型铝基复合材料的摩擦磨损性能  

Friction and Wear Properties of Aluminium Matrix Composites with Different Configurations

作　　者：滕杰[1] 邹文广 张艳[1] 梁哲宇 蒋福林[1] 傅定发[1] 杨光剑 TENG Jie;ZOU Wenguang;ZHANG Yan;LIANG Zheyu;JIANG Fulin;FU Dingfa;YANG Guangjian(College of Materials Science and Engineering,Hunan University,Changsha 410082,China;China Shipbuilding Industry Corporation Diesel Engine Company Ltd.,Qingdao 266520,China)

机构地区：[1]湖南大学材料科学与工程学院,湖南长沙410082 [2]中船发动机有限公司,山东青岛266520

出　　处：《湖南大学学报(自然科学版)》2025年第4期177-185,共9页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(52374385)。

摘　　要：采用喷雾造粒与放电等离子烧结法,成功制备了具有双重网络结构的纳米SiC颗粒/晶须混杂增强8009Al/6061Al复合材料(aluminum matrix composite with dual network structure,AMC-DNC),并同时制备SiC增强相在8009Al/6061Al基体中均匀分布的复合材料(aluminum matrix composites with uniform structure,AMC-US).本研究对两种复合材料的微观组织和摩擦磨损性能进行了深入探讨.测定了AMC-DNC和AMC-US在不同载荷和转速下的摩擦系数与磨损率,并结合扫描电子显微镜观察磨损形貌,深入分析了双重网络结构对复合材料磨损机制的影响.实验结果表明,放电等离子烧结法制备的AMC-DNC和AMC-US的致密度分别高达98.1%和99.2%.在低载荷、低转速条件下,AMC-DNC的主要磨损机制为磨粒磨损,其中颗粒的脱离导致氧化膜破裂,进而造成材料表面损伤.而在较高载荷和较高转速条件下,磨损机制转变为剥层磨损.在相同的摩擦磨损实验条件下,AMC-DNC展现出优于AMC-US的摩擦磨损性能,表明双重网络构型的设计在提升复合材料耐磨性能方面有显著作用.Nano-SIC particle/whisker hybrid reinforced 8009Al/6061Al composites(AMC-DNC)with dual network structure were successfully prepared by spray granulation and discharge plasma sintering.At the same time,the SiC reinforced phase is uniformly distributed in 8009Al/6061Al matrix(AMC-US).In this study,the microstructure and friction and wear properties of the two composites were investigated.The friction coefficient and wear rate of AMC-DNC and AMC-US under different load and rotation speed were measured.The wear morphology was observed by scanning electron microscope,and the influence of dual network structure on the wear mechanism of composite was analyzed.The experimental results show that the density of AMC-DNC and AMC-US prepared by discharge plasma sintering method is 98.1%and 99.2%,respectively.Under low rotation load and rotation low speed conditions,the main wear mechanism of AMC-DNC is abrasive wear,in which the separation of particles leads to the rupture of oxide film,resulting in the surface damage of the material.However,under higher load and rotation speed conditions,the wear mechanism changes to peeling wear.Under the same friction and wear experimental conditions,AMC-DNC shows better friction and wear performance than AMC-US,indicating that the design of dual network stucture plays a significant role in improving the wear resistance of composite materials.

关 键 词：铝基复合材料 双重网络结构 放电等离子烧结 摩擦磨损 

分 类 号：TB333[一般工业技术—材料科学与工程]