Presented at the Fall Meeting of the Basic Science Division, The American Ceramic Society, The Pennsylvania State University, University Park, Pennsylvania, October 17, 1955.
Reactions Between Aluminum Oxide and Carbon The Al2O3—Al4C3 Phase Diagram
Article first published online: 2 JUN 2006
Journal of the American Ceramic Society
Volume 39, Issue 1, pages 1–11, January 1956
How to Cite
FOSTER, L. M., LONG, G. and HUNTER, M. S. (1956), Reactions Between Aluminum Oxide and Carbon The Al2O3—Al4C3 Phase Diagram. Journal of the American Ceramic Society, 39: 1–11. doi: 10.1111/j.1151-2916.1956.tb15588.x
The authors are, respectively, chief, Physical Chemistry Division; research engineer, Physical Chemistry Division; and assistant chief. Metallography Division, Aluminum Research Laboratories, Aluminum Company of America.
- Issue published online: 2 JUN 2006
- Article first published online: 2 JUN 2006
- Received June 9, 1955.
A phase diagram of the system A12O3-A14C3 is proposed. Two intermediate oxycarbides, A14O4C and A12OC, were established. Eutectic melting between alumina and A14O4C occurred at 1840° C. No other low melting was observed. The alumina phase was not corundum but was similar to delta-alumina. Because of the high reactivity of aluminum carbide and all the intermediate compounds with moisture and oxygen, use of refractories based on the system A12O3-A14C3 must be limited to applications where these agents are excluded. The behavior of high-alumina refractories in the presence of carbon is explained.