DC Electric Field-Enhanced Grain-Boundary Mobility in Magnesium Aluminate During Annealing

• Published in: Journal of the American Ceramic Society Vol. 99; no. 6; pp. 1951 - 1959
• Main Authors: Rufner, Jorgen F., Kaseman, Derrick, Castro, Ricardo H.R., van Benthem, Klaus
• Format: Journal Article
• Language: English
• Published: Columbus Blackwell Publishing Ltd 01.06.2016; Wiley Subscription Services, Inc
• Subjects: Annealing; Cations; Ceramics; Direct current; Electric fields; Grain growth; Kinetics; Magnesium aluminate; Segregations; Sintering

Magnesium aluminate spinel was sintered and annealed at 1300°C under an applied 1000 V/cm DC electric field. The experiment was designed such that current could be removed as a variable and just the effect of a noncontact electric field was studied. Enhanced grain growth was observed for both sample...