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首页> 外文会议>Symposium on Filled and Nanocomposite Polymer Materials, Nov 27-30, 2000, Boston, Massachusetts, U.S.A. >X-ray diffraction study of crystallite size-distribution and strain in carbon blacks
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X-ray diffraction study of crystallite size-distribution and strain in carbon blacks

机译：炭黑中晶粒尺寸分布和应变的X射线衍射研究

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摘要

The crystallite size and size-distribution in carbon blacks in the presence of strain are determined by recently developed procedure of X-ray diffraction peak profile analysis. The Fourier coefficients of the measured physical profiles are fitted by Fourier coefficients of well established ab initio functions of size and strain peak profiles. Strain anisotropy is accounted for by expressing the mean square strain in terms of average dislocation contrast factors. Crystallite shape anisotropy is modelled by ellipsoids incorporated into the size profile function. To make the fitting procedure faster, the Fourier transform of the size profile is given as an analitical function. The method is applied to carbon blacks treated at different preassures and temperatures. The microstructure is characterised in terms of crystallite size distribution, dislocation density, and crystallite shape anisotropy.
机译：通过最近开发的X射线衍射峰轮廓分析程序，可以确定在存在应变的情况下炭黑中的微晶尺寸和尺寸分布。所测量的物理轮廓的傅立叶系数由尺寸和应变峰值轮廓的从头确定的从头函数的傅立叶系数拟合。应变各向异性是通过用平均位错对比因子表示均方应变来解决的。微晶形状各向异性是通过结合到尺寸轮廓函数中的椭球体建模的。为了使拟合过程更快，将尺寸轮廓的傅立叶变换作为分析函数。该方法适用于在不同压力和温度下处理过的炭黑。微观结构的特征在于晶粒尺寸分布，位错密度和晶粒形状各向异性。

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