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Research Article | Open Access

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

G. MEBRAHITOM ASMELASHa( ), O. MAMATb, F. AHMADb, A. K. PRASADA RAOa
Faculty of Manufacturing Engineering, Universiti Malaysia Pahang, Pekan, Pahang, Malaysia
Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, Malaysia
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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.

Keywords

ceramicsflexural strengthfracture toughnesspressureless sinteringthermal fatiguethermal shock

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Journal of Advanced Ceramics
Volume 4 Issue 3,
September 2015
Pages 190-198
DOI: 10.1007/s40145-015-0146-0
Cite this article:
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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Received: 11 November 2014
Revised: 06 February 2015
Accepted: 26 February 2015
Published: 04 July 2015
© The author(s) 2015

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.
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