Role of Al2O3 impurities on the microstructure and properties of Y-TZP

S. N.B. Hodgson; J. Cawley; M. Clubley

doi:10.1016/S0924-0136(99)00164-8

Role of Al₂O₃ impurities on the microstructure and properties of Y-TZP

S. N.B. Hodgson, J. Cawley, M. Clubley

Research output: Contribution to journal › Conference article › peer-review

31 Citations (Scopus)

Abstract

Al₂O₃ is commonly present in, or introduced to, tetragonal zirconia polycrystal (TZP) ceramics as either an impurity or an additive during powder manufacture and/or subsequent processing, although its effects are not well understood. A study has been carried out into the effects of variously dispersed Al₂O₃ at the 0-1 wt.% level on the sintering characteristics, microstructure, phase composition, and mechanical properties of yttria stabilised, tetragonal zirconia polycrystal (Y-TZP). The results show that these levels of Al₂O₃ can enhance sintering at low temperatures, but can also cause exaggerated grain growth and reduction in sintered density for higher sintering temperatures, with corresponding changes in the mechanical properties.

Original language	English
Pages (from-to)	85-90
Number of pages	6
Journal	Journal of Materials Processing Technology
Volume	92-93
DOIs	https://doi.org/10.1016/S0924-0136(99)00164-8
Publication status	Published - 30 Aug 1999
Event	Advances in Materials and Processing Technologies 1997 - Guimaraes, Portugal Duration: 22 Jul 1997 → 26 Jul 1997

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title = "Role of Al2O3 impurities on the microstructure and properties of Y-TZP",

abstract = "Al2O3 is commonly present in, or introduced to, tetragonal zirconia polycrystal (TZP) ceramics as either an impurity or an additive during powder manufacture and/or subsequent processing, although its effects are not well understood. A study has been carried out into the effects of variously dispersed Al2O3 at the 0-1 wt.% level on the sintering characteristics, microstructure, phase composition, and mechanical properties of yttria stabilised, tetragonal zirconia polycrystal (Y-TZP). The results show that these levels of Al2O3 can enhance sintering at low temperatures, but can also cause exaggerated grain growth and reduction in sintered density for higher sintering temperatures, with corresponding changes in the mechanical properties.",

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T1 - Role of Al2O3 impurities on the microstructure and properties of Y-TZP

AU - Hodgson, S. N.B.

AU - Cawley, J.

AU - Clubley, M.

PY - 1999/8/30

Y1 - 1999/8/30

N2 - Al2O3 is commonly present in, or introduced to, tetragonal zirconia polycrystal (TZP) ceramics as either an impurity or an additive during powder manufacture and/or subsequent processing, although its effects are not well understood. A study has been carried out into the effects of variously dispersed Al2O3 at the 0-1 wt.% level on the sintering characteristics, microstructure, phase composition, and mechanical properties of yttria stabilised, tetragonal zirconia polycrystal (Y-TZP). The results show that these levels of Al2O3 can enhance sintering at low temperatures, but can also cause exaggerated grain growth and reduction in sintered density for higher sintering temperatures, with corresponding changes in the mechanical properties.

AB - Al2O3 is commonly present in, or introduced to, tetragonal zirconia polycrystal (TZP) ceramics as either an impurity or an additive during powder manufacture and/or subsequent processing, although its effects are not well understood. A study has been carried out into the effects of variously dispersed Al2O3 at the 0-1 wt.% level on the sintering characteristics, microstructure, phase composition, and mechanical properties of yttria stabilised, tetragonal zirconia polycrystal (Y-TZP). The results show that these levels of Al2O3 can enhance sintering at low temperatures, but can also cause exaggerated grain growth and reduction in sintered density for higher sintering temperatures, with corresponding changes in the mechanical properties.

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SN - 0924-0136

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JF - Journal of Materials Processing Technology

T2 - Advances in Materials and Processing Technologies 1997

Y2 - 22 July 1997 through 26 July 1997

ER -

Role of Al₂O₃ impurities on the microstructure and properties of Y-TZP

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