Microstructure of nano SiC dispersed Al2O3-ZrO 2 composites

Byung Koog Jang

doi:10.1016/j.matchemphys.2005.03.014

Microstructure of nano SiC dispersed Al₂O₃-ZrO ₂ composites

Byung Koog Jang

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

22 Citations (Scopus)

Abstract

Nano-sized SiC dispersed YSZ (3 mol% Y₂O₃-ZrO ₂)-Al₂O₃ composites were fabricated by hot-pressing of SiC/YSZ/Al₂O₃ mixture and it was investigated the dispersed effect of nano SiC particles on suppression of grain growth as a function of hot-pressing temperature in the range of 1000-1800 °C. The SiC particulates were dispersed within the alumina grains and at grain boundaries. SiC particles significantly inhibited grain growth of the Al₂O₃ matrix. Significant grain growth was observed above 1600 °C for pure alumina and above 1700 °C for the YSZ-Al ₂O₃ composites. In contrast, significant grain growth of the alumina matrix in the SiC-YSZ-Al₂O₃ composites did not occur due to the disturbance of grain boundaries migration by immobile nano SiC.

Original language	English
Pages (from-to)	337-341
Number of pages	5
Journal	Materials Chemistry and Physics
Volume	93
Issue number	2-3
DOIs	https://doi.org/10.1016/j.matchemphys.2005.03.014
Publication status	Published - Oct 15 2005
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics

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10.1016/j.matchemphys.2005.03.014

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title = "Microstructure of nano SiC dispersed Al2O3-ZrO 2 composites",

abstract = "Nano-sized SiC dispersed YSZ (3 mol\% Y2O3-ZrO 2)-Al2O3 composites were fabricated by hot-pressing of SiC/YSZ/Al2O3 mixture and it was investigated the dispersed effect of nano SiC particles on suppression of grain growth as a function of hot-pressing temperature in the range of 1000-1800 °C. The SiC particulates were dispersed within the alumina grains and at grain boundaries. SiC particles significantly inhibited grain growth of the Al2O3 matrix. Significant grain growth was observed above 1600 °C for pure alumina and above 1700 °C for the YSZ-Al 2O3 composites. In contrast, significant grain growth of the alumina matrix in the SiC-YSZ-Al2O3 composites did not occur due to the disturbance of grain boundaries migration by immobile nano SiC.",

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AU - Jang, Byung Koog

PY - 2005/10/15

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N2 - Nano-sized SiC dispersed YSZ (3 mol% Y2O3-ZrO 2)-Al2O3 composites were fabricated by hot-pressing of SiC/YSZ/Al2O3 mixture and it was investigated the dispersed effect of nano SiC particles on suppression of grain growth as a function of hot-pressing temperature in the range of 1000-1800 °C. The SiC particulates were dispersed within the alumina grains and at grain boundaries. SiC particles significantly inhibited grain growth of the Al2O3 matrix. Significant grain growth was observed above 1600 °C for pure alumina and above 1700 °C for the YSZ-Al 2O3 composites. In contrast, significant grain growth of the alumina matrix in the SiC-YSZ-Al2O3 composites did not occur due to the disturbance of grain boundaries migration by immobile nano SiC.

AB - Nano-sized SiC dispersed YSZ (3 mol% Y2O3-ZrO 2)-Al2O3 composites were fabricated by hot-pressing of SiC/YSZ/Al2O3 mixture and it was investigated the dispersed effect of nano SiC particles on suppression of grain growth as a function of hot-pressing temperature in the range of 1000-1800 °C. The SiC particulates were dispersed within the alumina grains and at grain boundaries. SiC particles significantly inhibited grain growth of the Al2O3 matrix. Significant grain growth was observed above 1600 °C for pure alumina and above 1700 °C for the YSZ-Al 2O3 composites. In contrast, significant grain growth of the alumina matrix in the SiC-YSZ-Al2O3 composites did not occur due to the disturbance of grain boundaries migration by immobile nano SiC.

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M3 - Article

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JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

IS - 2-3

ER -

Microstructure of nano SiC dispersed Al₂O₃-ZrO ₂ composites

Abstract

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