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Effects of strontia on calcium zirconate sintering and thermal shock resistance

Effects of strontia on calcium zirconate sintering and thermal shock resistance The effects of strontian (SrO) content on the phase composition, microstructure, thermal shock resistance, and sintering properties of CaZrO3 were evaluated. CaZrO3 with different SrO contents (0, 1, 2, 4 wt.%) was synthesized by solid-state reaction. Zirconium oxide (ZrO2) and calcium carbonate (CaCO3) were used as raw materials, and SrO was added in varying contents. The SrO content played a key role in densification and grain refinement during the sintering process. Ceramic with relative density up to 90.82% and greatest flexural strength (252.82 MPa) was obtained by adding 4 wt.% strontia. Additionally, the SrO content affected the microstructures of the samples after sintering and quenching with liquid nitrogen. Furthermore, a significant effect on the densification process and the crack propagation mode transition was also observed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of the Australian Ceramic Society Springer Journals

Effects of strontia on calcium zirconate sintering and thermal shock resistance

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References (22)

Publisher
Springer Journals
Copyright
Copyright © Australian Ceramic Society 2020
ISSN
2510-1560
eISSN
2510-1579
DOI
10.1007/s41779-020-00490-0
Publisher site
See Article on Publisher Site

Abstract

The effects of strontian (SrO) content on the phase composition, microstructure, thermal shock resistance, and sintering properties of CaZrO3 were evaluated. CaZrO3 with different SrO contents (0, 1, 2, 4 wt.%) was synthesized by solid-state reaction. Zirconium oxide (ZrO2) and calcium carbonate (CaCO3) were used as raw materials, and SrO was added in varying contents. The SrO content played a key role in densification and grain refinement during the sintering process. Ceramic with relative density up to 90.82% and greatest flexural strength (252.82 MPa) was obtained by adding 4 wt.% strontia. Additionally, the SrO content affected the microstructures of the samples after sintering and quenching with liquid nitrogen. Furthermore, a significant effect on the densification process and the crack propagation mode transition was also observed.

Journal

Journal of the Australian Ceramic SocietySpringer Journals

Published: Jun 1, 2020

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