Evidence of excess oxygen accommodation in yttria partially-stabilized zirconia

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Evidence of excess oxygen accommodation in yttria partially-stabilized zirconia. / Middleburgh, Simon C.; Ipatova, Iuliia; Evitts, Lee J. et al.
In: Scripta Materialia, Vol. 175, 15.01.2020, p. 7-10.

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Middleburgh SC, Ipatova I, Evitts LJ, Rushton MJD, Assinder B, Grimes RW et al. Evidence of excess oxygen accommodation in yttria partially-stabilized zirconia. Scripta Materialia. 2020 Jan 15;175:7-10. Epub 2019 Sept 10. doi: 10.1016/j.scriptamat.2019.08.040

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Middleburgh, Simon C. ; Ipatova, Iuliia ; Evitts, Lee J. et al. / Evidence of excess oxygen accommodation in yttria partially-stabilized zirconia. In: Scripta Materialia. 2020 ; Vol. 175. pp. 7-10.

RIS

TY - JOUR

T1 - Evidence of excess oxygen accommodation in yttria partially-stabilized zirconia

AU - Middleburgh, Simon C.

AU - Ipatova, Iuliia

AU - Evitts, Lee J.

AU - Rushton, Michael J.D.

AU - Assinder, Ben

AU - Grimes, Robin W.

AU - Lee, William E.

PY - 2020/1/15

Y1 - 2020/1/15

N2 - ttria partially stabilized zirconia (ZrO2)x(Y2O3)½-x has been investigated to understand accommodation of excess oxygen into its structure. ZrO2 powder with 8 wt% Y2O3 additions was treated in 30 vol% H2O2 solution to promote oxidation of the material. A new Raman peak was observed after treatment at 840 cm−1, consistent with previous reports of solid state peroxide ions (O22−). This was corroborated using atomic scale simulation based on density functional theory; these also highlighted the near-zero solution enthalpy for excess oxygen in the monoclinic structure via the formation of a peroxide ion defect.

AB - ttria partially stabilized zirconia (ZrO2)x(Y2O3)½-x has been investigated to understand accommodation of excess oxygen into its structure. ZrO2 powder with 8 wt% Y2O3 additions was treated in 30 vol% H2O2 solution to promote oxidation of the material. A new Raman peak was observed after treatment at 840 cm−1, consistent with previous reports of solid state peroxide ions (O22−). This was corroborated using atomic scale simulation based on density functional theory; these also highlighted the near-zero solution enthalpy for excess oxygen in the monoclinic structure via the formation of a peroxide ion defect.

U2 - 10.1016/j.scriptamat.2019.08.040

DO - 10.1016/j.scriptamat.2019.08.040

M3 - Article

VL - 175

SP - 7

EP - 10

JO - Scripta Materialia

JF - Scripta Materialia

SN - 1359-6462

ER -