| 微米／纳米Ti（C,N）基金属陶瓷刀具材料的研制 |
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| 引用本文： | 徐立强,侯志刚,黄传真,刘加光.微米／纳米Ti（C,N）基金属陶瓷刀具材料的研制[J].稀有金属材料与工程,2007,24(5):29-32. |
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| 作者姓名： | 徐立强 侯志刚 黄传真 刘加光 |
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| 作者单位： | 烟台大学机电汽车工程学院 山东烟台264005(徐立强，侯志刚，刘加光)，山东大学机械工程学院先进射流工程技术研究中心 山东济南250061(黄传真) |
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| 基金项目： | 国家自然科学基金资助项目(50275086)，山东省优秀中青年科学家科研奖励基金(03BS153) |
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| 摘 要： | 系统研究了添加纳米级Al2O3的含量对Ti(C,N)基金属陶瓷力学性能和显微结构的影响。结果表明:纳米Al2O3的添加可大幅提高Ti(C,N)基金属陶瓷的力学性能,特别是硬度和断裂韧性明显提高,克服了Ti(C,N)基金属陶瓷硬度较低的缺点,扩大了其应用范围。通过对微观结构观察和分析,可以看出,纳米Al2O3的添加细化了基体的晶粒,主要断裂模式为穿晶断裂,晶粒的细化和断裂模式的改变是材料力学性能提高的主要原因。
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| 关 键 词： | Ti(C N)基金属陶瓷 纳米Al2O3 力学性能 显微结构 |
| 修稿时间： | 2007/1/13 0:00:00 |
Study on the Micron/Nano-Scale Ti(C,N) Based Cermet Tool Materials |
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| Xu Liqiang,Hou Zhigang,Huang Chuanzhen,Liu Jiaguang.Study on the Micron/Nano-Scale Ti(C,N) Based Cermet Tool Materials[J].Rare Metal Materials and Engineering,2007,24(5):29-32. |
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| Authors: | Xu Liqiang Hou Zhigang Huang Chuanzhen Liu Jiaguang |
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| Affiliation: | 1. Yantai University, Yantai 264005, China;. Shandong University, Jinnan 250061, China |
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| Abstract: | The effect of adding nano-scale alumna on mechanical properties and microstructure of micron-scale Ti(C,N) matrix cermet tool materials were investigated,which based on the mechanisms of grain improved fracture toughness.The results show that the mechanical properties of Ti(C,N) based cermet are greatly influenced by adding nano-scale alumna,especially the hardness and fracture toughness improved significantly.At the same time the disadvantages of low hardness and fracture toughness of Ti(C,N) ceramic cutting tool materials are eliminated.The microstructure observation and analysis by SEM show that Ti(C,N) grains are fined by nano-scale Al2O3 particles,and transgranular fracture mode of the material is mainly observed.The improvement of mechanical properties is due to the transformation of fracture mode and fining of Ti(C,N) grains. |
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| Keywords: | Ti(C0 7N0 3)-based cermets nano-scale Al2O3 microstructure mechanical properties |
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