ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
α-Al2O3 nanopowders were prepared by a novel synthesis process, using the nanosizedα-Al2O3 obtained from pyrolyzing ammonium aluminum carbonate hydroxide as seeds and theself-dispersed nanosized AlOOH crystal powders as precursors. Based on their good self-dispersion inwater, the α-Al2O3 seeds were dispersed evenly into the AlOOH sol by the new homodispersion mixingtechnique. This process enables the conversion of AlOOH to alumina at 190°C (hydrothermaltemperature), in which the alumina is calcined to nanosized alpha-alumina having an average length todiameter ratio of 60nm:15nm at 930°C. In the synthesis reaction for transforming the AlOOH to alumina,the effect of superfine pulverization and self-dispersion of the precursors was studied
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.675.pdf
Permalink