Cordierite-type glass-ceramic with controlled coloration
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United States of America Patent
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May 7, 1991
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N/A
app pub date -
Aug 11, 1988
filing date -
Aug 11, 1988
priority date (Note) -
Expired
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Abstract
There is disclosed a cordierite-type glass-ceramic article having a controlled gray coloration, and a method of producing such article by employing titania as the nucleating agent and firing in a reducing atmosphere, preferably a hydrogen-containing atmosphere, at 500.degree.-900.degree. C. for 2-8 hours.
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