| 镀镍碳纳米管对Mo_2FeB_2基金属陶瓷组织与性能的影响 |
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| 作者姓名： | 黄辽 潘应君 柯德庆 王盼 李子豪 常智敏 |
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| 作者单位： | 武汉科技大学材料与冶金学院 |
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| 基金项目： | 武汉科技大学省部共建耐火材料与冶金国家重点实验室青年基金资助项目(2018QN04). |
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| 摘 要： | 采用化学镀法对碳纳米管进行表面镀镍处理,再利用真空液相烧结法制备出以镀镍碳纳米管为增强体的Mo_2FeB_2基金属陶瓷复合材料,借助SEM、EDS、硬度计等研究了添加镀镍碳纳米管对Mo_2FeB_2基金属陶瓷微观组织及力学性能的影响。结果表明,添加适量镀镍碳纳米管可细化Mo_2FeB_2基金属陶瓷组织并控制其孔洞尺寸及数量,显著提高其硬度及断裂韧性。当镀镍碳纳米管添加量为0.5%时,所得试样的晶粒最为细小,晶粒尺寸大约为1.2μm,材料的力学性能最佳,其硬度和断裂韧性分别达到1228.4HV0.3及15.90MPa·m12,相应增韧机制为裂纹偏转、桥接增韧、撕裂棱增韧和微孔洞增韧。
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| 关 键 词： | 碳纳米管 Mo2FeB2 镀镍 金属陶瓷 真空液相烧结 微观组织 力学性能 |
| 收稿时间： | 2018/3/19 0:00:00 |
Effect of nickel-plated carbon nanotubes on the microstructure and properties of Mo2FeB2 based cermets |
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| Authors: | Huang Liao Pan Yingjun Ke Deqing Wang Pan Li Zihao and Chang Zhimin |
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| Institution: | College of Materials Science and Metallurgical Engineering , Wuhan University of Science and Technology, Wuhan 430081, China,College of Materials Science and Metallurgical Engineering , Wuhan University of Science and Technology, Wuhan 430081, China,College of Materials Science and Metallurgical Engineering , Wuhan University of Science and Technology, Wuhan 430081, China,College of Materials Science and Metallurgical Engineering , Wuhan University of Science and Technology, Wuhan 430081, China,College of Materials Science and Metallurgical Engineering , Wuhan University of Science and Technology, Wuhan 430081, China and College of Materials Science and Metallurgical Engineering , Wuhan University of Science and Technology, Wuhan 430081, China |
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| Abstract: | |
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| Keywords: | carbon nanotube Mo2FeB2 nickel plating cermet vacuum liquid-phase sintering microstructure mechanical property |
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