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Evaluation of Segregation in Polycrystalline 10 mol% Yttria Doped Zirconia (10YSZ)
Published online by Cambridge University Press: 20 September 2011
Abstract
The present work reports surface segregation in polycrystalline yttria-stabilised zirconia (cubic) including 10 mol% Y2O3 (10YSZ). The 10YSZ specimen was annealed in the range 1073 K - 1673 K in the gas phase of controlled oxygen activity. The segregation-induced intensity profiles of 89Y, 40Ca, 28Si, 27Al, 133Cs, 197Au and 90Zr was measured using secondary ion mass spectrometry (SIMS). The data obtained show that (i) annealing of 10YSZ results in the formation of segregation-induced concentration gradients of 89Y, 40Ca, 28Si, 27Al and (ii) segregation-induced profiles depend on oxygen activity.
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- Copyright © Materials Research Society 2011