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A process for the production of sub-micron to millimetre sized thermally stable alpha-alumina spheres
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UNSPECIFIED. (1999) A process for the production of sub-micron to millimetre sized thermally stable alpha-alumina spheres. MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 60 (3). pp. 217-222. ISSN 0921-5107
Full text not available from this repository.Abstract
The sol-emulsion-gel method has been employed to produce alumina gel spheres from unseeded as well as seeded alumina sol. Controlled heating of the unseeded gel spheres leads to the formation of alpha-alumina phase at 1200 degrees C. Various seeds have been tried to determine the effect of seeding on the formation of alpha-alumina and it is found that seeding with 0.5 wt.% Fe2O3 leads to the formation of alpha-alumina at a relatively low temperature of 950 degrees C. The sizes of the microspheres can be varied in the range between 0.5 mu m and 1 mm by suitable choice of the process parameters. The resultant gel spheres on controlled heating transform into thermally stable alpha-alumina spheres. (C) 1999 Elsevier Science S.A. All rights reserved.
| Item Type: | Journal Article | ||||
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| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) Q Science > QC Physics |
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| Journal or Publication Title: | MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | ||||
| Publisher: | ELSEVIER SCIENCE SA | ||||
| ISSN: | 0921-5107 | ||||
| Official Date: | 29 June 1999 | ||||
| Dates: |
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| Volume: | 60 | ||||
| Number: | 3 | ||||
| Number of Pages: | 6 | ||||
| Page Range: | pp. 217-222 | ||||
| Publication Status: | Published | ||||
| URI: | http://wrap.warwick.ac.uk/id/eprint/14372 |
Data sourced from Thomson Reuters' Web of Knowledge
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