| Ti3SiC2/TiC复合材料的制备及力学性能研究 |
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| 引用本文： | 周峰,肖琪聃,吴珊. Ti3SiC2/TiC复合材料的制备及力学性能研究[J]. 科学技术与工程, 2017, 17(25) |
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| 作者姓名： | 周峰 肖琪聃 吴珊 |
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| 作者单位： | 信阳师范学院,信阳师范学院,信阳师范学院 |
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| 基金项目： | 国家联合基金项目项目(UI034003) 资助 |
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| 摘 要： | 弓网系统中,各种类型的受电弓滑板承担着传输电能的重要功能,其严酷的工作条件对受电弓滑板材料的性能提出了非常苛刻的要求。目前最主要的受电弓滑板有：粉末冶金滑板,纯碳滑板和浸金属碳滑板。其中碳滑板材料性能较好但价格昂贵,粉末冶金滑板材料价格便宜,但性能明显逊于前者。Ti3SiC2/TiC是一种兼具陶瓷与金属性质的新型材料,与碳滑板材料相比,其电阻率低,且具有良好的抗氧化性和自润滑减摩性,因此Ti3SiC2/TiC将可能成为一种工艺简单、成本更低、而性能则更高的新型受电弓滑板材料。本研究以Si、Ti和C为原料,利用熔渗反应烧结技术制备出Ti3SiC2/TiC复合材料,研究结果表明,制备样品的弯曲强度与硬度分别达到 423MPa~564MPa 和169~249HB。同时,本文对Ti3SiC2/TiC复合材料的断裂机理进行了研究。
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| 关 键 词： | Ti3SiC2/TiC 熔渗 力学性能 断裂机理 |
| 收稿时间： | 2017-02-20 |
| 修稿时间： | 2017-02-20 |
Preparation and mechanical properties of Ti3SiC2/TiC Synthesized by Infiltration sintering |
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| Feng Zhou,Qi. Dan. Xiao and Shan. Wu. Preparation and mechanical properties of Ti3SiC2/TiC Synthesized by Infiltration sintering[J]. Science Technology and Engineering, 2017, 17(25) |
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| Authors: | Feng Zhou Qi. Dan. Xiao Shan. Wu |
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| Affiliation: | College of architecture and civil engineering,Xinyang Normal University,College of architecture and civil engineering,Xinyang Normal University,College of architecture and civil engineering,Xinyang Normal University |
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| Abstract: | The Ti3SiC2/TiC composites with high density have been fabricated by infiltration sintering synthesis (IS) with Si, Ti and C powders (xSi:3Ti:2C) as the raw material. The crystal structure and composition of samples were determined respectively. The result showed that samples consists of double-phase: TiC and Ti3SiC2. The Ti3SiC2/TiC samples showed good mechanical performance-the flexural strength and the Hardness were 423MPa~564MPa and 169~249HB, respectively. The Brinell hardness of samples varies regularly as the content of titanium carbide in Ti3SiC2/TiC composites and test loads change. The damage and fracture mechanisms were also studied in this paper. |
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| Keywords: | Ti3SiC2/TiC Infiltration sintering Mechanical properties Fracture mechanisms |
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