碳纳米管/铝界面反应程度及其与复合材料力学性能的关系  

CNTs/Al Interfacial Reaction Degree and the Relationship with Mechanical Performance of Composite

作　　者：李忠文 林仁邦 胡励 俞子贇 鄢来朋[3] 谭占秋[3] 范根莲[3] 李志强[3] 张荻[3] LI Zhongwen;LIN Renbang;HU Li;YU Ziyun;YAN Laipeng;TAN Zhanqiu;FAN Genlian;LI Zhiqiang;ZHANG Di(CRRC Qingdao Sifang CO., LTD., Qingdao 266111, China;Shanghai Institute of Aerospace System Engineering, Shanghai 201108, China;Stake Key Laboratory of Metal Matrix Composites, Shanghai Jiaotong University, Shanghai 200240, China)

机构地区：[1]中车青岛四方机车车辆股份有限公司,青岛266111 [2]上海宇航系统工程研究所,上海201108 [3]上海交通大学金属基复合材料国家重点实验室,上海200240

出　　处：《机械工程材料》2017年第11期19-22,28,共5页Materials For Mechanical Engineering

基　　金：科技部"973"计划项目(2012CB619600);国家自然科学基金资助项目(51131004;51671130;51511130038);上海市自然科学基金资助项目(14DZ2261200;15JC1402100)

摘　　要：采用电化学溶解-气相色谱标定方法,研究了不同烧结时间下质量分数2%CNTs/5083Al复合材料中界面反应程度的变化规律,并探讨了界面反应程度与复合材料力学性能的关系。结果表明:在570℃烧结温度下,当烧结时间从1h延长到6h时,2%CNTs/5083Al复合材料的界面反应程度从5.5%增加到24.1%,并与烧结时间成一定的线性关系;随着烧结时间的延长,复合材料的杨氏模量、屈服强度与抗拉强度均呈先增加后降低的趋势,而伸长率呈先略微下降后持续增加的趋势。The evolution of interfacial reaction degree with different sintering time of mass fraction 2%CNTs/5083 Al composite was studied by the electrochemical dissolution-gas chromatography method.The relationship of interfacial reaction degree and mechanical performance was discussed.The results show that with sintering time increasing from 1 h to 6 h,interfacial reaction degree of 2%CNTs/5083 Al composite increased from 5.5% to 24.1% and showed a certain linear relationship with sintering time when the composite was sintered at 570 ℃.Young′s modulus,yield strength and tensile strength of the composite increased at first and then decreased,while the elongation decreased slightly at first and then increased continuously with the increase of sintering time.

关 键 词：碳纳米管 铝基复合材料 界面反应程度 力学性能 

分 类 号：TB331[一般工业技术—材料科学与工程]