摘要
我们对纳米氧化镁微晶的系列样品进行了差热分析 ( DTA)、红外 ( FT- IR)测量以及 X射线衍射( XRD)分析研究 .结合所获得的晶粒度和 XRD微结构参数 ,我们发现 :纳米晶氧化镁的晶粒组元中存在晶格膨胀 ;纳米氧化镁晶粒随着温度的升高而长大 ,且其微结构呈现出明显的变化 ,其晶格畸变与晶粒尺寸有关 .
We conducted an investigation into nanocrystalline magnesium oxide samples by DTA (Differential Thermal Analysis) measurement, IR (Infrared spectrum) experiment and XRD (X\|ray Diffraction analysis. From the obtained grain size and XRD microstructural parameter, we found some patterns as follows: there exists expansion of crystal lattice in crystalline grain component of nanostructured magnesium oxide; with increasing temperature the grain grows and occurs distinct change in microstructure of nanocrystaline magnesium oxide. The distortion of crystal lattice has relative correlation with the grain size.
基金
国家自然科学基金资助项目! (59472 0 2 0 )
浙江省自然科学基金资助项目! (5960 4 8)
关键词
纳米微晶
XRD
微结构
尺寸效应
纳米氧化镁
nanocrystal
XRD microstructure parameter
expansion of crystal lattice
size effect
