Ti2AlC陶瓷弥散增强Al基复合材料的制备及剪切性能  

Preparation and Shear Properties of Ti2AlC Ceramic Dispersion Reinforced Al Matrix Materials

作　　者：张强 蔡璋文 董兰静 柏跃磊[2] 朱春城[1] ZHANG Qiang;CAI Zhangwen;DONG Lanjing;BAI Yuelei;ZHU Chuncheng(Kay Laboratory for Electronic Bandgap Materials,Ministry of Education,College of Chemistry and Chemical Engineering,Harbin Normal University,Harbin 150025,China;National Key Laboratory of Science and Technology on Advanced Composites in Special Environments and Center for Composite Materials and Structures,Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]哈尔滨师范大学化学化工学院,光电带隙材料省部共建教育部重点实验室,哈尔滨150025 [2]哈尔滨工业大学特种环境复合材料技术国防科技重点实验室,哈尔滨150001

出　　处：《材料导报》2020年第20期20086-20090,共5页Materials Reports

基　　金：国家自然科学基金(51572064);国防基础科研计划项目(JCKYS2019603C005);黑龙江省自然科学基金重点项目(ZD2017011)。

摘　　要：采用自蔓延高温合成法制备高纯Ti 2AlC粉体材料,以CuSO 4·5H 2O为Cu源在Ti 2AlC粉体表面进行化学镀,并将镀铜后的陶瓷颗粒与Al粉进行混合,采用热压烧结法制备了Ti 2AlC陶瓷弥散增强Al基材料。结果表明,Ti 2AlC具有自催化效应,无需进行任何表面预处理,即可得到均匀稳定的纳米Cu镀层,增强相颗粒对金属基体起到了有效的钉扎作用;制备的Cu包覆Ti 2AlC陶瓷弥散增强Al基材料主相为Al、Ti 2AlC、Al 2Cu。Al 2Cu的存在可以很好地桥连Al基体与Ti 2AlC陶瓷颗粒,引入Cu镀层后复合材料的抗剪切性能提高了65.7%。High purity Ti 2AlC powder was prepared by self-propagating high temperature method.The Cu coated Ti 2AlC powder was synthesized by electroless plating method,and Cu source was provided by CuSO 4·5H 2O.After electroless plating copper,ceramic particles were mixed with Al powder.Ti 2AlC ceramic reinforced Al matrix materials were fabricated by hot-pressing sintering.The results show that Ti2AlC has autocatalytic effect,uniform and stable nano Cu coating can be obtained without any surface pretreatment.The reinforcement phase plays an effective role in binding Al matrix.According to X-ray diffraction analysis,the main phases of Cu-coated Ti 2AlC ceramic reinforced Al matrix materials were Al,Ti 2AlC and Al 2Cu.The Al 2Cu can bridge Al matrix and Ti 2AlC ceramic.After the Cu coating was introduced,the shear resistance of the compo-sites was improved by 65.7%.

关 键 词：TI2ALC 化学镀 热压烧结 AL基复合材料 

分 类 号：TB331[一般工业技术—材料科学与工程]