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Microstructural evolution in MSnO3 ceramics derived via self-heat-sustained (SHS) reaction technique


Citation

Azad, Abdul-Majeed and Shyan, Lucia Liew Woan and Pang, Toh Yen and Nee, Chen Hon (2000) Microstructural evolution in MSnO3 ceramics derived via self-heat-sustained (SHS) reaction technique. Ceramics International, 26 (7). pp. 685-692. ISSN 0272-8842; eISSN: 0272-8842

Abstract

A thorough study of MSnO3 (M = Ca, Sr and Ba) compounds with respect to their synthesis, processing and microstructural characterization has been made. In order to establish a standard methodology with identical and beneficial microstructure and reproducible electrical characteristics, a novel preparative method called self-heat-sustained (SHS) reaction technique was employed. Evolution of microstructure which is intimately related to the envisaged properties in the ceramics, was closely and systematically followed in terms of wide temperature-soak time (T-t) profiles. The results showed that while a well-densified microstructure with small grain size (approximately 1 μm) and near zero porosity could be obtained by selecting a sintering schedule of 1350 °C/x h (48 h<x≤60 h) for CaSnO3 samples, very well sintered samples with relatively larger grains (3-5 μm) and minimal porosity could also be obtained by sintering at 1600 °C for 2 h. Well-densified microstructure with small grain size and zero or near zero porosity could be obtained by a sintering schedule of 1350 °C/x h (12 h<x≤24 h) in SrSnO3 samples. Sintering of BaSnO3 proved to be the most difficult. The BaSnO3 samples could only be densified to the desired level by soaking the powder compacts for 2 h at 1600 °C. The `sugar cube' features were replaced by the spherical grains (average size 1-2 μm).


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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
DOI Number: https://doi.org/10.1016/S0272-8842(00)00005-5
Publisher: Elsevier
Keywords: Alkaline-earth metal metastannates; A. sintering; B. microstructure
Depositing User: Ms. Zaimah Saiful Yazan
Date Deposited: 08 Jul 2025 04:27
Last Modified: 08 Jul 2025 04:27
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/S0272-8842(00)00005-5
URI: http://psasir.upm.edu.my/id/eprint/115592
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