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Phase separation induced by hydration of the mixed Ca

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Phase separation induced by hydration of the mixed

Ca/Sr aluminates Ca

3-x

Sr

x

Al

2

O

6

- A crystallographic

study

Author Prodjosantoso A.K. · Kennedy B.J. · Hunter B.A.

Published April 2002

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.

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