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９．８ＧＰａ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。
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.
出处
《高压物理学报》
CAS
CSCD
北大核心
1997年第1期75-80,共6页
Chinese Journal of High Pressure Physics
基金
清华大学新型陶瓷与精细工艺国家重点实验室院外基金
关键词
冲击波
氮化铝
晶格缺陷
X射线衍射
陶瓷材料
shock wave modification,aluminium nitride,crystal lattice defect,X ray diffraction.
