Phase transformation in nanometer-sized gamma-alumina by mechanical milling
Abbreviated Journal Title
J. Am. Ceram. Soc.
NANOCRYSTALLINE ALUMINA; TRANSITION; ZIRCONIA; BOEHMITE; KINETICS; POWDERS; BODIES; SYSTEM; AL2O3; Materials Science, Ceramics
Nanocrystalline gamma-alumina powders of 50-nm size were milled by high-energy hall milling. It was found that the pure gamma-alumina phase showed great stability and did not transform to any other phase even after a long milling time. On the other hand, gamma-alumina, which contained a small amount of the alpha-alumina phase, showed a gradual phase transformation from gamma- to alpha-alumina on milling. The phase transformation mechanism during milling appears to be nucleation and growth type and promoted by the alpha-alumina seed.
Journal of the American Ceramic Society
"Phase transformation in nanometer-sized gamma-alumina by mechanical milling" (2005). Faculty Bibliography 2000s. 5767.