Characteristics and Sintering Behaviour of 3 mol.% Y sub 2 O sub 3 --ZrO sub 2 Powders Synthesized by Reaction in Molten Salts

Yttria-stabilized tetragonal zirconia powders have been synthesized by reaction in molten salts at 450 deg C. To obtain a Y sub 2 O sub 3 --ZrO sub 2 solid solution powder, it was necessary to use Y salts (not yttrium oxide directly) in molten NaNO sub 3 --KNO sub 3 eutectic. The agglomeration state...

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Bibliographic Details
Published in:Journal of materials science 1993-05, Vol.28 (9), p.2283-2288
Main Authors: Descemond, M, Brodhag, C, Thevenot, F, Durand, B, Jebrouni, M, Roubin, M
Format: Article
Language:English
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Summary:Yttria-stabilized tetragonal zirconia powders have been synthesized by reaction in molten salts at 450 deg C. To obtain a Y sub 2 O sub 3 --ZrO sub 2 solid solution powder, it was necessary to use Y salts (not yttrium oxide directly) in molten NaNO sub 3 --KNO sub 3 eutectic. The agglomeration state of the powders depended on their washing conditions. An alcohol-washed powder containing soft agglomerates led to a fine-grained and high-density sintered body.
ISSN:0022-2461