Determination of Calcium Sulfate Hemihydrate Modification by X-ray Diffraction Analysis
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- 作者：Aleksey Eremin ; Aleks.eremin@gmail.com ; Andrey Pustovgar ; Stanislav Pashkevich ; Irina Ivanova ; Anastasiya Golotina
- 关键词：calcium sulfate hemihydrate ; type of modification ; microstructure ; X-Ray powder diffraction
- 刊名：Procedia Engineering
- 出版年：2016
- 出版时间：2016
- 年：2016
- 卷：165
- 期：Complete
- 页码：1343-1347
- 全文大小：415 K
- 卷排序：165
文摘
Alpha and beta forms of calcium sulfate hemihydrate were studied by X-Ray powder diffraction. Microstructure parameters including crystallite sizes and microstress values were determined using Williamson-Hall Plot. It has been established that alpha and beta hemihydrates are characterized by the similar size of crystals and the main contribution to broadening of diffraction peaks is attributable to microstress in the studied material. For alpha-hemihydrate the obtained values of microstress are 0.00011...0.00044, for beta-hemihydrate they exceed 0.001. Based on the results of this research, the method of determination of calcium sulfate hemihydrate form by using X-Ray powder diffraction analysis can be developed.