Alumino-silicate glass having high thermal stability and low processing temperature
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United States of America Patent
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Sep 9, 2014
Grant Date -
Mar 7, 2013
app pub date -
Feb 29, 2012
filing date -
Sep 25, 2009
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Abstract
The invention relates to an alumino-silicate glass which has a thermal expansion coefficient in the range of 8 to 10×10−6/K in a temperature range of 20 to 300° C., a transformation temperature Tg in a range of 580° C. to 640° C., and a processing temperature VA in a range of 1065° C. to 1140° C. and which can therefore be used as an alternative for soda lime glasses. An object of the invention is also the use of the inventive glasses in applications where a high temperature stability of the glasses is advantageous, in particular as substrate glass, superstrate glass and/or cover glass in the field of semiconductor technology, preferably for Cd—Te or for CIS or CIGS photovoltaic applications and for other applications in solar technology.
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