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TiB2陶瓷/Cr15基复合材料界面结合研究
Study on Interfacial Bonding of TiB 2 Ceramic/Cr15 Matrix Composites
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- DOI:
- 作者:
- 郑巧玲1李烨飞1王国亮2陈志1高义民1赵四勇3
ZHENG Qiaoling 1 , LI Yefei 1 , WANG Guoliang 2 , CHEN Zhi 1 , GAO Yimin 1 , ZHAO Siyong 3
- 作者单位:
- 1. 西安交通大学金属材料强度国家重点实验室2. 火箭军工程大学3. 广西长城机械股份有限公司
1. State Key Laboratory for Mechanical Behavior of Materials, Xi ’ an Jiaotong University, Xi ’ an 710049, China, 2. Rocket Force University of Engineering, Xi ’ an 710025, China, 3. Guangxi Great Wall Machinaries, Hezhou 542699, China
- 关键词:
- TiB2陶瓷;金属基复合材料;界面;冶金结合;
TiB 2 ceramic; metal matrix composites; interface; metallurgical bonding
- 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 TiB 2 陶瓷增强 Cr15
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， Cr15 基体与 TiB 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 TiB 2
ceramic reinforced Cr15 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 Cr15 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.