Digitalfire Ceramic Glossary

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Flameware


Flameware is ceramic that can withstand severe temperature changes without cracking (i.e. stove top burners). Ovenware is another class of ceramics, it is not as resistant to thermal shock as flameware.

Ceramic is much more susceptible to thermal shock failure than most other materials because of its brittle nature, lack of elasticity and tendency to propagate cracks. Thus the creation of true flameware requires compromising things like plasticity and vitrification. Non-vitreous flameware bodies can be made using high a proportions of a low expansion material like kyanite, mullite, pyrophyllite or molochite (powder or grog) plastic-bonded with a small amount of clay or organic binder and fire-bonded with a glass producing flux. Of course, if the particles of these materials are altered or taken into solution in the glass bonder (e.g. feldspar) then the low expansion character of their natural state is lost.

True flameware cannot normally be glazed because it is very difficult to make a glaze of low enough expansion not to craze.

Out Bound Links

In Bound Links

  • (Glossary) Ovenware

    Ovenware clay bodies have a lower thermal expansio...

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