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Phase separation induced by hydration of the mixed Ca/Sr aluminates Ca3−xSrxAl2O6: A crystallographic study |
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| Authors: | Anti K Prodjosantoso Brendan J Kennedy Brett A Hunter |
| Affiliation: | a School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia b Jurusan Kimia, Universitas Negeri Yogyakarta, Yogyakarta, DIY 55281, Indonesia c Australian Nuclear Science and Technology Organisation, Private Mail Bag 1, Menai, NSW 2234, Australia |
| Abstract: | The compounds formed by the hydration of single-phase samples of the mixed, solid solution, Ca/Sr aluminates, Ca3−xSrxAl2O6, 3≤x≤0 have been studied using high-resolution synchrotron powder diffraction. Hydration of these mixed metal aluminates generally resulted in the formation of at least two hydrogarnet phases, one Ca-rich and the other Sr-rich. The structures of these hydrogarnets have been refined from neutron or synchrotron powder X-ray diffraction (XRD) data. A simple solubility model to explain the phase separation is presented. |
| Keywords: | Crystal structure X-ray diffraction Ca3Al2O6 Sr |
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