Low temperature superplastic flow of yttria stabilized tetragonal zirconia polycrystals

M.M.R. Boutz; A.J.A. Winnubst; A.J. Burggraaf; M. Nauer; C. Carry

doi:10.1016/0955-2219(94)90107-4

Low temperature superplastic flow of yttria stabilized tetragonal zirconia polycrystals

M.M.R. Boutz, A.J.A. Winnubst, A.J. Burggraaf, M. Nauer, C. Carry

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Abstract

Very fine-grained (0·2 μm), dense Y-TZP ceramics have been produced by free sintering at 1150°C. The superplastic deformation of these materials is studied in compression at low temperatures (1100-1300°C). A significant enhancement in initial strain rates was observed compared to a coarser-grained (0·4 μm) commercially available material (Tosoh, Japan). Doping with small amounts of Fe₂O₃ led to a further enhancement of strain rate. Deformation occurred via interface reaction controlled grain boundary sliding. Prior to deformation a continuous glassy silicate film was observed at the grain boundaries. The applicability of interface reaction controlled solution-precipitation creep models is discussed. The absence of a steady-state during deformation at low stresses is attributed to dewetting of the silicate film.

Original language	English
Pages (from-to)	103-111
Number of pages	9
Journal	Journal of the European Ceramic Society
Volume	13
Issue number	2
DOIs	https://doi.org/10.1016/0955-2219(94)90107-4
Publication status	Published - 1994

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title = "Low temperature superplastic flow of yttria stabilized tetragonal zirconia polycrystals",

abstract = "Very fine-grained (0·2 μm), dense Y-TZP ceramics have been produced by free sintering at 1150°C. The superplastic deformation of these materials is studied in compression at low temperatures (1100-1300°C). A significant enhancement in initial strain rates was observed compared to a coarser-grained (0·4 μm) commercially available material (Tosoh, Japan). Doping with small amounts of Fe2O3 led to a further enhancement of strain rate. Deformation occurred via interface reaction controlled grain boundary sliding. Prior to deformation a continuous glassy silicate film was observed at the grain boundaries. The applicability of interface reaction controlled solution-precipitation creep models is discussed. The absence of a steady-state during deformation at low stresses is attributed to dewetting of the silicate film.",

author = "M.M.R. Boutz and A.J.A. Winnubst and A.J. Burggraaf and M. Nauer and C. Carry",

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T1 - Low temperature superplastic flow of yttria stabilized tetragonal zirconia polycrystals

AU - Boutz, M.M.R.

AU - Winnubst, A.J.A.

AU - Burggraaf, A.J.

AU - Nauer, M.

AU - Carry, C.

PY - 1994

Y1 - 1994

N2 - Very fine-grained (0·2 μm), dense Y-TZP ceramics have been produced by free sintering at 1150°C. The superplastic deformation of these materials is studied in compression at low temperatures (1100-1300°C). A significant enhancement in initial strain rates was observed compared to a coarser-grained (0·4 μm) commercially available material (Tosoh, Japan). Doping with small amounts of Fe2O3 led to a further enhancement of strain rate. Deformation occurred via interface reaction controlled grain boundary sliding. Prior to deformation a continuous glassy silicate film was observed at the grain boundaries. The applicability of interface reaction controlled solution-precipitation creep models is discussed. The absence of a steady-state during deformation at low stresses is attributed to dewetting of the silicate film.

AB - Very fine-grained (0·2 μm), dense Y-TZP ceramics have been produced by free sintering at 1150°C. The superplastic deformation of these materials is studied in compression at low temperatures (1100-1300°C). A significant enhancement in initial strain rates was observed compared to a coarser-grained (0·4 μm) commercially available material (Tosoh, Japan). Doping with small amounts of Fe2O3 led to a further enhancement of strain rate. Deformation occurred via interface reaction controlled grain boundary sliding. Prior to deformation a continuous glassy silicate film was observed at the grain boundaries. The applicability of interface reaction controlled solution-precipitation creep models is discussed. The absence of a steady-state during deformation at low stresses is attributed to dewetting of the silicate film.

U2 - 10.1016/0955-2219(94)90107-4

DO - 10.1016/0955-2219(94)90107-4

M3 - Article

SN - 0955-2219

VL - 13

SP - 103

EP - 111

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 2

ER -

Low temperature superplastic flow of yttria stabilized tetragonal zirconia polycrystals

Abstract

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