The effects of solid phase additives on sintering properties of alumina bioceramic

Abstract

In order to reduce the sintering temperature and improve the preparing conditions of alumina bioceramics, the Mg−Zr−Y composite solid phase additives, were added into high purity Al₂O₃ micro-powder by chemical coprecipitation method. The powder was shaped under 200MPa cold isostatic pressure, and then the biscuits were sintered at 1600°C under normal pressure. The sintered alumina materials were tested and the sintering mechanism was discussed. The results show that physical properties of the material were improved comparatively. The Mg−Zr−Y composite solid additives could promote the sintering of alumina bioceramics and the mechanism is solid phase sintering.

Keywords

alumina / sintering / additives / property

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