Formation and Sintering Characteristics of Aluminum Borate Whiskers
Author:
- 1 December 1992
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 75 (12) , 3452-3456
Abstract
A boric acid‐stabilized aluminum acetate powder was decomposed to aluminum borate (Al 18 B 4 O 33 ) by calcining at 1000°C. The powder was then ball‐milled, compacted, and fired to temperatures of 1500°, 1600°, and 1700°C for a period of 1 h. The resulting aluminum borate ceramic had a whiskerlike grain morphology, with the whisker length approaching 20 μm and a diameter of 2–3 μm. The sintered compact showed no shrinkage upon firing, had a porosity of ∼50%, a narrow pore size distribution, and an average pore size of 1–3 μm.Keywords
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