| TiC粉末微晶化的正电子湮设研究 |
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| 引用本文： | 胡耀波,熊惟皓.TiC粉末微晶化的正电子湮设研究[J].硬质合金,1998(2). |
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| 作者姓名： | 胡耀波 熊惟皓 |
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| 作者单位： | 华中理工大学模具技术国家重点实验室!武汉，430074 |
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| 基金项目： | 国家自然科学基金!59571027，湖北省自然科学基金!96J029，模具技术国家重点实验室开放基金 |
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| 摘 要： | 用正电子湮没方法研究了TiC粉末的微观结构缺陷。结果表明，TiC在球磨过程中，发生了非晶晶化反应，形成了微晶，同时缺陷向内表面聚集，并且球磨后平均粒径明显变小，使粉末的外表面增加，从而压制时更容易成型。
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| 关 键 词： | 正电子湮没 微晶 |
POSITRON ANNIHILATION STUDY ON MICROCRYSTALLIZATION IN TiC POWDER |
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| Hu Yaobo,Xiong Weihao.POSITRON ANNIHILATION STUDY ON MICROCRYSTALLIZATION IN TiC POWDER[J].Cemented Carbide,1998(2). |
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| Authors: | Hu Yaobo Xiong Weihao |
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| Affiliation: | Huazhong University of Science and Techology |
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| Abstract: | Positron annihilation spectroscopy were employed to investigate the microstructural defects in the TiC powder. During the ball- milling, crystallization was happend and nanocrystallines were formed in TiC. At the same time, the defects gathered at the interface. The average particle size was reduced after the ball-milling,it make the surface increase so that the pressed formation became easier. |
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| Keywords: | Positron annihilation spectroscopy Nanocrystalline |
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