Thermal shock and fatigue behavior of pressureless sintered Al2O3–SiO2–ZrO2 composites

G. MEBRAHITOM ASMELASH; O. MAMAT; F. AHMAD; A. K. PRASADA RAO

doi:10.1007/s40145-015-0146-0

Journal of Advanced Ceramics 2015, 4(3): 190-198 https://doi.org/10.1007/s40145-015-0146-0

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Open Access | Issue | Published: 04 July 2015

Thermal shock and fatigue behavior of pressureless sintered Al₂O₃–SiO₂–ZrO₂ composites

Show Author's Information Hide Author's Information G. MEBRAHITOM ASMELASH^{^a}(

), O. MAMAT^{^b}, F. AHMAD^{^b}, A. K. PRASADA RAO^{^a}

^a Faculty of Manufacturing Engineering, Universiti Malaysia Pahang, Pekan, Pahang, Malaysia

^b Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, Malaysia

Keywords:

flexural strength, fracture toughness, ceramics, pressureless sintering, thermal fatigue, thermal shock

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ASMELASH GM, MAMAT O, AHMAD F, et al. Thermal shock and fatigue behavior of pressureless sintered Al₂O₃–SiO₂–ZrO₂ composites. Journal of Advanced Ceramics, 2015, 4(3): 190-198. https://doi.org/10.1007/s40145-015-0146-0

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Abstract

The thermal shock and fatigue behavior of pressureless sintered Al₂O₃–SiO₂–ZrO₂ (ASZ) composites was studied. The influence of the thermal shock and fatigue on the strengthening response of ASZ has been investigated by measuring the strength retention and microstructural changes. The magnitude of the flexural strength and fracture of the ASZ has been compared with that of the monolithic Al₂O₃ (A) and Al₂O₃–ZrO₂ (AZ) composites under the same experimental conditions. Results indicated that the ASZ composites possess the highest resistance against thermal shock and fatigue, in comparison with A and AZ. The improvements were attributed to the enhancement in the fracture toughness of ASZ and the presence of multi-phase reinforcement.

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Thermal shock and fatigue behavior of pressureless sintered Al₂O₃–SiO₂–ZrO₂ composites

Show Author's information Hide Author's Information G. MEBRAHITOM ASMELASH^{^a}(

), O. MAMAT^{^b}, F. AHMAD^{^b}, A. K. PRASADA RAO^{^a}

^a Faculty of Manufacturing Engineering, Universiti Malaysia Pahang, Pekan, Pahang, Malaysia

^b Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, Malaysia

Abstract

Keywords: flexural strength, fracture toughness, ceramics, pressureless sintering, thermal fatigue, thermal shock

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Publication history

Received: 11 November 2014

Revised: 06 February 2015

Accepted: 26 February 2015

Published: 04 July 2015

Issue date: September 2015

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Open Access: This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.