Silicon-Free Oxynitride Glasses Via Nitridation of Aluminate Glassmelts |
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| Authors: | Larry M.,Bagaasen Subhash H.,Risbud&# |
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| Affiliation: | Department of Ceramic Engineering and Materials Research Laboratory, University of Illinois at Urbana-Champaign, 105 S. Goodwin Ave., Urbana, Illinois 61801 |
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| Abstract: | Aluminate-oxynitride glasses were synthesized by melting calcium-aluminate-based compositions with various amounts of AlN in a nitrogen atmosphere. X-ray amorphous Ca-Al-Mg-Ba-O-N oxynitride glasses free of metallic inclusions containing up to ∼1 at. % N were obtained. Nitride additions increased the glass transition temperatures while decreasing thermal expansion, as in other Sicontaining oxynitride systems. |
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