Determination of Calcium Sulfate Hemihydrate Modification by X-ray Diffraction Analysis
| Autor: | Aleksey Eremin, Stanislav Pashkevich, Andrey Pustovgar, Irina I. Ivanova, Anastasiya Golotina |
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| Rok vydání: | 2016 |
| Předmět: |
Diffraction
Materials science Calcium Sulfate Hemihydrate 0211 other engineering and technologies Analytical chemistry 02 engineering and technology General Medicine 021001 nanoscience & nanotechnology Microstructure Crystallography 021105 building & construction X-ray crystallography Crystallite 0210 nano-technology Engineering(all) Powder diffraction |
| Zdroj: | Procedia Engineering. 165:1343-1347 |
| ISSN: | 1877-7058 |
| DOI: | 10.1016/j.proeng.2016.11.862 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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