| La2O3-TiC/W复合材料的制备与力学性能研究 |
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| 引用本文： | 陈勇,吴玉程,于福文,陈俊凌.La2O3-TiC/W复合材料的制备与力学性能研究[J].兵器材料科学与工程,2008,31(1):47-50. |
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| 作者姓名： | 陈勇 吴玉程 于福文 陈俊凌 |
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| 作者单位： | 合肥工业大学,材料科学与工程学院,安徽,合肥,230009;中国科学院,等离子体物理研究所,安徽,合肥,230031 |
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| 基金项目： | 合肥工业大学中青年创新群体基金，中国科学院等离子体物理研究所合作项目 |
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| 摘 要： | 采用粉末冶金法制备La2O3和TiC协同增强钨基复合材料,研究La2O3-TiC/W复合材料的室温力学性能。结果表明:与纯钨相比,La2O3和TiC显著提高材料的硬度、弹性模量、抗弯强度和断裂韧性;La2O3-TiC/W复合材料抗弯强度在TiC的质量分数为5%时出现最大值898MPa,断裂韧性在TiC的质量分数为10%时出现最大值10.07MPa.m1/2。质量分数为1%的La2O3与质量分数为5%的TiC协同作用时,La2O3-TiC/W复合材料具有较好的综合力学性能。
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| 关 键 词： | 钨 La2O3 TiC 协同强化 力学性能 |
| 文章编号： | 1004-244X(2008)01-0047-04 |
| 修稿时间： | 2007年4月4日 |
Study on preparation and mechanical properties of La2O3-TiC/W composite |
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| CHEN Yong,WU Yu-cheng,YU Fu-wen,CHEN Jun-ling.Study on preparation and mechanical properties of La2O3-TiC/W composite[J].Ordnance Material Science and Engineering,2008,31(1):47-50. |
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| Authors: | CHEN Yong WU Yu-cheng YU Fu-wen CHEN Jun-ling |
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| Abstract: | The tungsten-based composites,co-strengthened by 1wt%La2O3 and TiC were prepared by powder metallurgy method.The mechanical properties at room temperature and strengthening and toughening mechanisms of La2O3-TiC/W were investigated.The results show that co-addition of La2O3 and TiC improves hardness,elastic modulus,flexural strength and fracture toughness compared with pure tungsten.The flexural strength of La2O3-TiC/W has a maximum of 898MPa with 5wt%TiC,and fracture toughness has a maximum of 10.07MPa·m1/2 with 10wt%TiC.The La2O3-TiC/W composite has optimal mechanical properties with addition of 1wt%La2O3 and 5wt%TiC. |
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| Keywords: | La2O3 TiC |
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