TiB_(2)陶瓷/Crl5基复合材料界面结合研究  

Study on Interfacial Bonding of TiB_(2) Ceramic/Crl5 Matrix Composites

作　　者：郑巧玲[1] 李烨飞[1] 王国亮 陈志 高义民[1] 赵四勇 ZHENG Qiaoling;LI Yefei;WANG Guoliang;CHEN Zhi;GAO Yimin;ZHAO Siyong(State Key Laboratory for Mechanical Behavior of Materials,Xi'an Jiaotong University,Xi'an 710049,China;Rocket Force University of Engineering,Xi’an 710025,China;Guangxi Great Wall Machinaries,Hezhou 542699,China)

机构地区：[1]西安交通大学金属材料强度国家重点实验室,陕西西安710049 [2]火箭军工程大学,陕西西安710025 [3]广西长城机械股份有限公司,广西贺州542699

出　　处：《铸造技术》2021年第6期486-489,共4页Foundry Technology

基　　金：广东省重点领域研发计划资助(2019B010942001);陕西省自然科学基金(2021JM-011);金属材料磨损控制与成型技术国家地方联合工程研究中心开放基金(HKDNM201901);陕西省重点研发计划(2019GY-182);中央高校基本科研业务费专项资金资助(xtrO118008,xzy012019001)。

摘　　要：利用前驱体法制备了三维连通TiB_(2)陶瓷预制体,结合铸渗工艺成功制备了三维连通Ti8_(2)陶瓷增强Crl5基复合材料。采用电子探针和热力学计算,结合XRD测试研究了界面反映问题。结果表明,Crl5基体与Ti8_(2)增强相结合良好,无明显的孔洞或缝隙。在过渡区,陶瓷增强体与基体之间发生了Ti、B、Fe、Cr、C等元素的扩散及界面反应。在浇注过程中,在高温和氧的共同作用下,发生了界面反应,在复合材料界面处发生化学反应形成了Ti_(3)B_(4)、Fe_(2)Ti和TiC等过渡层物相,界面表现为冶金结合。The 3D connected TiB_(2)ceramic preforms were prepared by the precursor method,and the 3D connected TiB2 ceramic reinforced Crl5 matrix composites were successfully prepared by the casting and infiltration process.The interface reaction problem was studied by using electron probe and thermodynamic calculation combined with XRD test.The results show that the Crl5 matrix combines well with TiB_(2) reinforcement,and there are no obvious pores or cracks.In the transition zone,diffusion and interfacial reactions of Ti,B,Fe,Cr,C and other elements occur between the ceramic reinforcement and the matrix.In the process of casting,under the action of high temperature and oxygen,the interface reaction takes place,and the chemical reaction takes place at the interface of the composite material to form the transition layer phase such as Ti_(3)B_(4),Fe_(2)Ti and TiC,and the interface shows metallurgical bonding.

关 键 词：TiB_(2)陶瓷 金属基复合材料 界面 冶金结合 

分 类 号：TB331[一般工业技术—材料科学与工程]