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Microhardness of ceramics produced from different alumina nanopowders by different techniques |
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| Authors: | V. I. Lysenko A. G. Anisimov V. I. Mali V. A. Emel’kin |
| Affiliation: | 1. Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch, Russian Academy of Sciences, Institutskaya ul. 4/1, Novosibirsk, 630090, Russia 2. Lavrent’ev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, pr. Lavrent’eva 15, Novosibirsk, 630090, Russia |
| Abstract: | Fine-grained ceramics (with a grain size on the order of a micron) have been produced by the spark plasma sintering (SPS) of various alumina nanopowders. We have compared the microhardness of ceramic samples prepared from 11 alumina nanopowders and that of composites based on such powders. The ceramics have been prepared by both SPS and a conventional technique (sequential pressing and sintering). We examine the effect of the phase composition and average particle size of the starting nanopowder on the microhardness of the ceramics. |
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