Mechanical and thermal behavior of cellular mullite materials

•A deep study of the mechanical and thermal behavior for cellular mullite materials at different temperatures was presented in this paper.•The influence of the microstructure, as well as porosity, of the cellular mullite materials in the mechanical and thermal properties was analyzed.•Results are re...

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Bibliographic Details
Published in:Journal of the European Ceramic Society Vol. 41; no. 13; pp. 6687 - 6696
Main Authors: Sandoval, M.L., Tomba Martinez, A.G., Camerucci, M.A.
Format: Journal Article
Language:English
Published: Elsevier Ltd 01-10-2021
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Summary:•A deep study of the mechanical and thermal behavior for cellular mullite materials at different temperatures was presented in this paper.•The influence of the microstructure, as well as porosity, of the cellular mullite materials in the mechanical and thermal properties was analyzed.•Results are relevant for the design of novel materials with suitable properties in thermal insulator applications. In this paper, the mechanical behavior and thermal properties of cellular mullite bodies obtained by thermal direct-consolidation of foamed aqueous suspensions of mullite-bovine serum albumin (BSA) and mullite-BSA-methylcellulose (MC) were studied. The mechanical behavior of cellular mullite materials sintered at 1600 °C was evaluated by diametral compression at room temperature, 1000 °C and 1300 °C. The variation in the thermal diffusivity and thermal conductivity at temperatures up to 900 °C was determined using the laser-flash method. The results of the mechanical and thermal evaluation were analyzed based on the porosity features of the sintered materials, which was determined in turn by the starting system used for shaping the bodies.
ISSN:0955-2219
1873-619X
DOI:10.1016/j.jeurceramsoc.2021.05.047