Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1652308 | Materials Letters | 2008 | 4 Pages |
Abstract
Nanostructured α-alumina powder was synthesized by precipitation and calcination of Al13-clusters that were formed by the hydrolysis of Al3+ions with hydroxide. The Al13-clusters were precipitated with oxalic acid by two-stage and one-stage precipitation techniques. The precipitates were calcined in air at 1100 °C. The resulting α-alumina particles were characterized using particle size analyzer, X-ray diffraction (XRD) and transmission electron microscope (TEM). The pH and precipitation technique were found to influence the microstructural features of the α-alumina powder produced. Alumina with more extensive nanostructures inside the grain can be produced through the two-stage precipitation technique.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Megat Harun Al Rashid Megat Ahmad, Che Seman Mahmood, Abdul Aziz Mohamed, Azmi Ibrahim, Rosidah Alias, Sabrina Mohd Shapee, Mohamed Razman Yahya, Abd Fatah Awang Mat,