Article
Metastability in the MgAl₂O₄-Al₂O₃ System
International Journal of Applied Ceramic Technology
Abstract
Aluminum oxide must take a spinel form (γ-Al2O3) at increased temperatures in order for extensive solid solution to form between MgAl2O4 and α-Al2O3. The solvus line between MgAl2O4 and Al2O3 has been defined at 79.6 wt% Al2O3 at 1500°C, 83.0 wt% Al2O3 at 1600°C, and 86.5 wt% Al2O3 at 1700°C. A metastable region has been defined at temperatures up to 1700°C which could have significant implications for material processing and properties. Additionally, initial processing could have major implications on final chemistry.
Department(s)
Materials Science and Engineering
Keywords and Phrases
- Ceramic materials,
- Marketing, Aluminum oxides,
- Increased temperature,
- Material processing,
- Metastabilities,
- Metastable region,
- MgAl, Aluminum
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2014 The American Ceramic Society, All rights reserved.
Publication Date
11-1-2014
Publication Date
01 Nov 2014
Disciplines
Citation Information
Kelley R. Wilkerson, Jeffrey D. Smith and James G. Hemrick. "Metastability in the MgAl₂O₄-Al₂O₃ System" International Journal of Applied Ceramic Technology Vol. 11 Iss. 6 (2014) p. 1020 - 1024 ISSN: 1546-542X Available at: http://works.bepress.com/kelley-wilkerson/3/