Vitrification
'Vitrification' is a process. As clay is fired hotter and hotter, it reaches a point where, if cooled, it will produce ware of sufficient density and strength as to be useful for the intended purpose. The intended purpose may well require some porosity to gain another more important advantage (i.e. stability in the kiln, resistance to blistering). However 'vitreous' ware is usually functional, water proof, sanitary, hard, and strong. Such products must be fired closer to the melting range of the clay. Ware that has fired dense and strong is also said to be 'mature'. To vitrify some clays requires that they be fired high enough to cause deformation, ware thus needs to be supported in setters or the cross section redesigned to be more stable. Porcelains and very vitreous. Stoneware are generally semi vitreous. Out Bound Links
In Bound Links
- (Glossary)
Clay
Clays occur when parent clay-making rocks (there a... - (Project)
Ceramic Properties
A property in this context is a created physical p... - (Glossary)
Functional
A functional clay body is one that produces a cera...
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