Abstract
Abstract The influence of several additives (ZrO 2 , CeO 2 , TiO 2 , SiO 2 ) on sintering of conventional yttria powders is investigated. Titanium oxide is the most efficient in promoting densification and in lowering sintering temperatures. Almost full densities can be obtained at 1400–1500°C if a small amount of dopant (0.2 wt% TiO 2 ) is dispersed homogeneously onto the surface of yttria during powder processing.
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