On the synchronicity of flash sintering and phase transformation
Abstract
There is growing evidence that oxides of complex chemistries can be formed in one step by reactive flash sintering of their elemental constituents. Here we explore the temporal relationship between phase transformation and sintering by combining measurements of sintering with in situ measurements of phase transformation. The experiments are carried out under current rate, where flash is induced by injecting current and increasing it at a constant rate. We show that phase transformation of powders of magnesia and α‐alumina into single‐phase magnesium aluminate spinel was completed in 45 seconds, whereas sintering to full density required 60 seconds.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 15, 2019
- Source ID
- 10.1111/jace.16335
Entities
People
- Bola Yoon
- Devinder Yadav
- Pankaj Sarin
- Rishi Raj
- Sanjit Ghose
Organizations
- Army Research Office
- Brookhaven National Laboratory
- Indian Institutes of Technology
- Oklahoma State University–Stillwater
- University of Colorado Boulder