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  • 2013-12-06 18:48:01, 822.79 K

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Therefore, the formation of the metastable ¦Ã -(Al, Si)2O3 phase can only be expected during
non-equilibrium processing where the decomposition is kinetically hindered. The Si-induced
changes in stability of this metastable solid solution may be understood based on the
electronic structure. As the Si concentration is increased, stiff silicon¨Coxygen bonds are
formed giving rise to the observed stabilization of the ¦Ã -phase.
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