Article ID Journal Published Year Pages File Type
1500015 Scripta Materialia 2012 4 Pages PDF
Abstract

We propose a sintering mechanism of transparent Y3Al5O12 nanoceramics under high pressure. Through analysis of the porosity, grain size and residual stress for the nanostructured YAG compacts prepared at high pressure and modest temperature (HPMT, 2.0–5.0 GPa and 300–500 °C), the nanosintering behavior was systematically investigated. High pressure can initiate the plastic deformation of nanograins to eliminate pores and enhance the local atomic diffusion among grain boundaries, thus producing fine nanostructured and near fully dense transparent YAG bulks.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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