Thermally generated darkening of oxide glasses

Sen, A. ; Kumar, J. ; Chakravorty, D. (1985) Thermally generated darkening of oxide glasses Physics and Chemistry of Glasses, 26 (5). pp. 171-176. ISSN 0031-9090

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Oxide glass powders of a wide range of compositions darken when heated at 400-600°C with a trace amount of water; excess water inhibits the darkening. The darkened samples bleach when heated to 850° under ordinary atm or when treated with oxidizing agents. A model ascribes darkening to formation of nonparamagnetic color centers formed by simultaneous dehydration and reduction reactions.

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Deposited On:19 Jun 2012 14:05
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