The act or process of devitrifying, or the state of being devitrified. Specifically, the conversion of molten glassy matter into a stony mass by slow cooling, the result being the formation of crystallites, microbites, etc., in the glassy base, which are then called devitrification products.
Devitrification - The change in glassy rocks that results in crystallization of minerals.
Also known as "devit." A deterioration process in which crystals form in the glass, or appear as a fog or scum on the surface and give a dull appearance. A fault of the manufacturing process when glass is heated incompletely or unevenly. Also caused by chemical impurities on the surface, and "cold working". Crystallization occurs when glass in held somewhat below its liquidus temperature, about 1400 degrees F. for most glass.
the formation of ordered ice crystals during warming of a solution that was previously in the vitrified (glass-like) state
A change in a ceramic coating resulting in a loss of gloss due to crystallization.
It is a term used for the changing over of a mineral with a crystalline structure from a natural glass.
The crystallizing of a ceramic melt during cooling, which results in a "matte" finish.
(1) The process whereby glass becomes partly crystallized as it cools (usually too slowly) from the molten state; (2) the crystals formed by this process. Devitrification may also occur on the surface as a result of unsuccessful annealing or accidental heating to a high temperature. It is not caused by chemical reaction between glass and its environment, which is known as weathering.
the process in which a glass (noncrystalline or vitreous solid) transforms to a crystalline solid
A crystalline growth that appears as a scum or matte finish on the surface of some glasses when heated to fusing temperatures.
The crystallization of glass; occurs naturally.
