About this Abstract |
Meeting |
MS&T23: Materials Science & Technology
|
Symposium
|
Engineering Ceramics: Microstructure-Property-Performance Relations and Applications
|
Presentation Title |
Two Step Sintering of Calcined Alumina Formed by Different Methods |
Author(s) |
Daniel J. Delia, Hyojin Lee, William M. Carty |
On-Site Speaker (Planned) |
Daniel J. Delia |
Abstract Scope |
Two step sintering of a calcined alumina powder was investigated using powder compacts formed using different forming methods. Both as received and milled powders achieved relative densities surpassing 99% through two step sintering with the lowest ratio of measured grain size with respect to initial particle size (D50) was observed to be 1.5. Discontinuous grain growth was observed within a fine-grained matrix in the milled powder, but not in the as-received powders, suggesting that there is a tendency for rapid grain growth in domains created during forming. |