Mg-Si-Al Oxynitride Glasses
Abstract
The glass-forming region at 1650 deg C was investigated for Mg-Si-Al-O-N compositions containing up to 20 equivalent % N (16 atomic %), and glass batches of up to 30 g were prepared and characterized. Glasses containing up to 8 atomic % N were grey colored, but transparent, while crystal-free glasses with higher N contents were unattainable. Little, if any, N loss occurred during melting; glass density, microhardness, and elastic modulus all increased with N content. The origins and consequences of the metallic precipitates that cause the grey color are discussed in the context of the literature on glasses prepared under reducing conditions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1992
- Accession Number
- ADA247593
Entities
People
- Donald R. Messier
- Robert P. Gleisner