Perfect single-crystal alumina microspheres
Abbreviated Journal Title
J. Am. Ceram. Soc.
ULTRATHIN AL2O3 FILMS; ALPHA-ALUMINA; PARTICLES; TRANSFORMATION; ALPHA-AL2O3; GROWTH; THETA; Materials Science, Ceramics
We report the synthesis of perfect single-crystal Al2O3 microspheres via direct thermal decomposition of aluminum isopropoxide in air without any template or catalyst. The obtained microspheres were characterized using scanning electron microscopy, X-ray diffraction, transmission electron microscopy, and selective area electron diffraction. The results suggested that the formation of the spheres can be attributed to a transition from polycrystalline to single-crystalline symmetry during high-temperature annealing. The obtained microspheres could be useful for many applications such as lubricants and polishing mediums.
Journal of the American Ceramic Society
"Perfect single-crystal alumina microspheres" (2008). Faculty Bibliography 2000s. 1169.