| (Ti,V)_3AlC_2/Al_2O_3复合材料的制备及力学性能 |
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| 引用本文： | 王 鑫,刘 毅,朱建锋,王 芬. (Ti,V)_3AlC_2/Al_2O_3复合材料的制备及力学性能[J]. 现代技术陶瓷, 2017, 38(1): 34-39 |
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| 作者姓名： | 王 鑫 刘 毅 朱建锋 王 芬 |
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| 作者单位： | 陕西科技大学 材料科学与工程学院，西安710021,陕西科技大学 材料科学与工程学院，西安710021,陕西科技大学 材料科学与工程学院，西安710021,陕西科技大学 材料科学与工程学院，西安710021 |
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| 基金项目： | 国家自然科学基金 (51171096，51142009)；陕西省科技厅自然科学基金 (2010JM6014)。 |
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| 摘 要： | 为了提高Ti_3Al C_2陶瓷的力学性能,本研究以Ti C粉、Ti粉、Al粉和V2O5粉为起始反应原料,采用原位热压技术在1350°C下反应烧结合成出了(Ti,V)_3AlC_2/Al_2O_3复合材料。利用X-射线衍射和扫描电子显微技术对合成产物的物相和微观结构进行了表征,并分析了复合材料的合成机制。最后,对(Ti,V)_3AlC_2/Al_2O_3复合材料的力学性能进行了研究。测试结果表明:(Ti_(0.92),V_(0.08))_3Al C_2/10wt%Al_2O_3复合材料具有最佳的力学性能,其硬度、断裂韧性及抗弯强度分别为5.56 GPa、12.93 MPa·m~(1/2)和435 MPa,相比于单相Ti_3Al C_2材料分别提升了60%、108%和31%。
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| 关 键 词： | Ti3AlC2 原位热压技术 固溶强化 复合增韧 力学性能 |
Synthesis and Mechanical Properties of (Ti,V)3AlC2/Al2O3 Composite |
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| WANG Xin,LIU Yi,ZHU Jian-Feng and WANG Fen. Synthesis and Mechanical Properties of (Ti,V)3AlC2/Al2O3 Composite[J]. Advanced Ceramics, 2017, 38(1): 34-39 |
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| Authors: | WANG Xin LIU Yi ZHU Jian-Feng WANG Fen |
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| Affiliation: | School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi''an 710021, China,School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi''an 710021, China,School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi''an 710021, China and School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi''an 710021, China |
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| Abstract: | In order to improve the mechanical properties of Ti3AlC2 ceramic, (Ti,V)3AlC2/Al2O3 composite was prepared at 1350oC by in-situ hot-pressing using TiC, Ti, Al and V2O5 as raw materials. The phase composition and microstructure of as-synthesis composites were characterized by X-ray diffraction and scanning electron microscopy. The mechanical properties of the composites with different Al2O3 contents were also investigated. The results indicated that (Ti0.92,V0.08)3AlC2/ 10wt% Al2O3 composite displayed optimum mechanical properties, for which the hardness, fracture toughness and flexural strength were 5.56 GPa, 12.93 MPa·m1/2 and 435 MPa, respectively. Compared with single-phase Ti3AlC2, the mechanical properties were improved by 60%, 108% and 31% , respectively. |
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| Keywords: | Ti3AlC2 In-situ hot-pressing Solid solution Strengthening Composite toughening Mechanical properties |
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