e/Quartz inversion

Information
has gloss	eng: The alpha-to-beta quartz inversion, of alpha-quartz to beta-quartz, is one of the most important factors to be considered in the production of vitreous sanitary ware (see: ceramics). Between , there's a 2% expansion and 2% contraction on cooling. In this phase, alpha-quartz turns to beta-quartz and reverses during the cooling phase. It is recommended to fire slowly through quartz inversion as to avoid cracking. Quartz inversion is an important silica reaction in firing clay bodies. The size of the silica particles is important in determining how easily the alpha and beta quartz contracts. Fine-grained silica will more easily change into non-contracting silica glass or sudden-contracting cristobalite, and thus not providing the proper contraction for a glaze. If the thermal expansion rates and contraction rates for the clay and glaze are different, it will result in crazing and/or "shivering".
lexicalization	eng: quartz inversion
instance of	e/Ceramic materials