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Glass and Ceramics

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01-08-2019 | SCIENCE FOR CERAMIC PRODUCTION

Effect of Aluminum Oxide Powder Particle Size on Spark Plasma Sintering Results

Authors: N. A. Rubinkovskii, D. P. Shornikov, A. V. Tenishev, A. G. Zaluzhnyi, A. G. Zholnin

Published in: Glass and Ceramics | Issue 3-4/2019

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Abstract

The results of a comparative study of compacts obtained by spark plasma sintering from nano- and ultradisperse (UD) aluminum oxide powders with spherically shaped particles are reported. It is shown that the compacts obtained from UD-powder have higher density and greater strength, microhardness, and structural uniformity with smaller grains than compacts obtained from nanopowder. Preliminary magnetic-pulse compaction of powders prior to sintering improves the characteristics of both compacts but higher density and strength with smaller grains are achieved in compacts obtained from UD-powder. In both cases of preliminary preparation the UD-powder compacts have advantages over nanopowder compacts.

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Title: Effect of Aluminum Oxide Powder Particle Size on Spark Plasma Sintering Results
Authors: N. A. Rubinkovskii
D. P. Shornikov
A. V. Tenishev
A. G. Zaluzhnyi
A. G. Zholnin
Publication date: 01-08-2019
Publisher: Springer US
Published in: Glass and Ceramics / Issue 3-4/2019
Print ISSN: 0361-7610
Electronic ISSN: 1573-8515
DOI: https://doi.org/10.1007/s10717-019-00140-3

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