| 应用XRD方法研究AlN粉体的冲击波改性 |
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| 引用本文： | 韩巍,卢芳云.应用XRD方法研究AlN粉体的冲击波改性[J].高压物理学报,1997,11(1):75-80. |
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| 作者姓名： | 韩巍 卢芳云 |
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| 作者单位： | 国防科技大学应用物理系 |
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| 基金项目： | 清华大学新型陶瓷与精细工艺国家重点实验室院外基金 |
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| 摘 要： | 利用X射线衍射分析技术及Warren-Averbch分析方法，详细地研究了氮化铝陶瓷粉体在“名义压力”为9.8 GPa的冲击波压力作用下的晶格缺陷，得到了晶格畸变与晶胞柱尺寸的关系数值，分析结果表明，其相干散射区域尺寸远小于颗粒的真实尺寸，说明冲击波作用在氮化铝陶瓷粉体中产生了严重的晶格缺陷。
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| 关 键 词： | 冲击波作用 氮化铝 晶格缺陷 X射衍射 |
| 收稿时间： | 1996-07-02; |
RESEARCH OF MODIFICATION ON SHOCKED ALUMINIUM NITRIDE POWDER THROUGH X RAY DIFFRACTION |
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| Han Wei,Lu Fangyun.RESEARCH OF MODIFICATION ON SHOCKED ALUMINIUM NITRIDE POWDER THROUGH X RAY DIFFRACTION[J].Chinese Journal of High Pressure Physics,1997,11(1):75-80. |
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| Authors: | Han Wei Lu Fangyun |
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| Institution: | Department of Applied Physics, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | The changes of microstrain and dislocation density caused by shock wave on aluminum nitride ceramic powder have been researched,by X ray diffraction method the relationship between the microstrain and the size of the crystallite is obtained.According to Warren Averbch analysis,this means that the size of the coherent scattering region is far smaller than the size of the granula.It demonstrates that the shock wave treatment can generate large amount of crystal lattice defects in aluminum nitride. |
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| Keywords: | shock wave modification aluminium nitride crystal lattice defect X ray diffraction |
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