| SiC颗粒强韧化MoSi2复合材料 |
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| 引用本文： | 刘伯威,潘进,樊毅,张金生.SiC颗粒强韧化MoSi2复合材料[J].复合材料学报,2002,19(1):59-63. |
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| 作者姓名： | 刘伯威 潘进 樊毅 张金生 |
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| 作者单位： | 1. 中南大学 粉末冶金国家重点实验室, 长沙 410083
2. 广岛大学 工学部 机械系,日本 广岛1-4-1739-8527 |
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| 摘 要： | 通过湿法混料和热压烧结工艺成功地制备了20vo1%SiCP/MoSi2复合材料,并测定了其显微组织和力学性能。结果表明:SiCP/MoSi2复合材料主要由MoSi2和SiC颗粒组成,还有少量的Mo5Si3,致密度为92.3% 。与MoSi2相比,其室温抗弯强度提高了30.6%,断裂韧性提高了53%,1200℃的抗压强度提高了44%,1400℃的抗压强度提高了53%;其硬度、弹性模量等性能有较大提高。在Al2O3和SiC对磨盘上表现出极其优异的耐磨性能。SiC颗粒对MoSi2的室温增韧、高温增强效果显著。
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| 关 键 词： | 二硅化钼 复合材料 SiC颗粒 力学性能 |
| 文章编号： | 1000-3851(2002)01-0059-05 |
| 收稿时间： | 2000-05-26 |
| 修稿时间： | 2000年5月26日 |
SiC PARTICLE REINFORCED MoSi2 COMPOSITES |
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| LIU Bo-wei,PAN Jin,FAN Yi,ZHANG Jin-sheng.SiC PARTICLE REINFORCED MoSi2 COMPOSITES[J].Acta Materiae Compositae Sinica,2002,19(1):59-63. |
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| Authors: | LIU Bo-wei PAN Jin FAN Yi ZHANG Jin-sheng |
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| Affiliation: | 1. State Key Laboratory for Powder Metallurgy, Centre South University, Changsha410083,China;
2. Department of Materials Engineering, Hiroshima University, Kagamiyama 1-4-1, Higash-Hiroshima, 739-8527, Japan |
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| Abstract: | SiC particle reinforced molybdenum disilicide(MoSi2) matrix composite has been fabricated by wet mixing and hot press sintering successfully.The microstructure and mechanical properties of the composite were determined. The experimental results showed that SiCP/MoSi2 composite has a phase constituent with about 20 vol% SiC and less Mo5Si3 in MoSi2 matrix.Compared with unreinforced MoSi2, the flexural strength of SiCP/MoSi2 composite is increased by 33% and the fracture toughness by 52% at room temperature. Compressive yield strength of SiCP/MoSi2 composite is increased by 44% at 1200℃ and by 53% at 1400℃. SiCP/MoSi2 composite has been improved in its hardness and elastic modulus.The wear resistance of SiCP/MoSi2 on Al2O3 and SiC grind wheel is very excellent. An additional SiC particle into MoSi2 matrix has reflected improvements in toughness at room temperature and strength at high temperature. |
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| Keywords: | molybdenum- disilicide silicon carbide hotpress mechanical properties |
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