Sintering and Mechanical Properties of Yttria‐Doped Tetragonal ZrO2 Polycrystal/Mullite Composites

Masayuki Ishitsuka; Tsugio Sato; Tadashi Endo; Masahiko Shimada

doi:10.1111/j.1151-2916.1987.tb05653.x

Sintering and Mechanical Properties of Yttria‐Doped Tetragonal ZrO₂ Polycrystal/Mullite Composites

Masayuki Ishitsuka, Tsugio Sato, Tadashi Endo, Masahiko Shimada

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

Yttria‐doped tetragonal ZrO₂ polycrystal (Y‐TZP)lmullite composites were sintered at 1450° to 1500°C in air to disperse rodlike mullite grains at the grain boundary of Y‐TZP and the mechanical and thermal properties were investigated. The aspect ratios of mullite grain were >2. High fracture strength of 1000 MPa and fracture toughness of 12 MPa·m^1/2 were obtained by dispersing <20 vol% of mullite into Y‐TZP. The thermal expansion coefficient of Y‐TZP/mullite composites decreased with increasing mullite content. The thermal shock resistance of Y‐TZP was greatly improved by dispersion of rodlike mullite grains.

Original language	English
Pages (from-to)	C‐342-C‐346
Journal	Journal of the American Ceramic Society
Volume	70
Issue number	11
DOIs	https://doi.org/10.1111/j.1151-2916.1987.tb05653.x
Publication status	Published - 1987 Nov

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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10.1111/j.1151-2916.1987.tb05653.x

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abstract = "Yttria‐doped tetragonal ZrO2 polycrystal (Y‐TZP)lmullite composites were sintered at 1450° to 1500°C in air to disperse rodlike mullite grains at the grain boundary of Y‐TZP and the mechanical and thermal properties were investigated. The aspect ratios of mullite grain were >2. High fracture strength of 1000 MPa and fracture toughness of 12 MPa·m1/2 were obtained by dispersing <20 vol% of mullite into Y‐TZP. The thermal expansion coefficient of Y‐TZP/mullite composites decreased with increasing mullite content. The thermal shock resistance of Y‐TZP was greatly improved by dispersion of rodlike mullite grains.",

author = "Masayuki Ishitsuka and Tsugio Sato and Tadashi Endo and Masahiko Shimada",

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AU - Ishitsuka, Masayuki

AU - Sato, Tsugio

AU - Endo, Tadashi

AU - Shimada, Masahiko

PY - 1987/11

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AB - Yttria‐doped tetragonal ZrO2 polycrystal (Y‐TZP)lmullite composites were sintered at 1450° to 1500°C in air to disperse rodlike mullite grains at the grain boundary of Y‐TZP and the mechanical and thermal properties were investigated. The aspect ratios of mullite grain were >2. High fracture strength of 1000 MPa and fracture toughness of 12 MPa·m1/2 were obtained by dispersing <20 vol% of mullite into Y‐TZP. The thermal expansion coefficient of Y‐TZP/mullite composites decreased with increasing mullite content. The thermal shock resistance of Y‐TZP was greatly improved by dispersion of rodlike mullite grains.

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Sintering and Mechanical Properties of Yttria‐Doped Tetragonal ZrO₂ Polycrystal/Mullite Composites

Abstract

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