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Volume 7
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10.3390/ceramics7040098
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Article

Characterization of the Evolution with Temperature of the Structure and Properties of Geopolymer-Cordierite Composites

by
Franklin Casarrubios
1,*,
Alexandre Marlier
1,
Charlotte Lang
2,
Sandra Abdelouhab
2,
Isabella Mastroianni
2,
Geoffroy Bister
2 and
Maurice-François Gonon
1,*
1
Materials Institute, University of Mons (UMONS), 7000 Mons, Belgium
2
Belgian Ceramic Research Centre (BCRC), 7000 Mons, Belgium
*
Authors to whom correspondence should be addressed.
Ceramics 2024, 7(4), 1513-1532; https://doi.org/10.3390/ceramics7040098
Submission received: 9 September 2024 / Revised: 8 October 2024 / Accepted: 13 October 2024 / Published: 17 October 2024
(This article belongs to the Special Issue Innovative Manufacturing Processes of Silicate Materials)
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Abstract

This work is part of a research project aimed at producing ceramic-like materials, without the need for an initial sintering, for potential applications in catalysis or filtration at temperatures up to 1000 °C. In that context, cordierite-derived materials were prepared from recycled cordierite powder (automotive industry waste) bonded with metakaolin-potassium silicate geopolymer. The principle is that these materials, prepared at temperatures below 100 °C, acquire their final properties during the high-temperature commissioning. The focus is on the influence of the K/Al ratio and cordierite fraction on the stability of the dimensions and porosity during heating at 1000 °C, and on the final Young’s modulus and coefficient of thermal expansion. Conventional and high-temperature XRD evidenced the absence of crystallization of the geopolymer binder and interaction with the cordierite filler during the heating stage when K/Al = 1 or 0.75. By contrast, crystallization of kalsilite and leucite, and diffusion of potassium ions in the structure of cordierite is evidenced for K/Al = 1.5 and 2.3. These differences strongly influence the shrinkage due to sintering and the final properties. It is shown that a K/Al ratio of 0.75 or 1 is favorable to the stability of the porosity, around 25 to 30%. Moreover, a low coefficient of thermal expansion of 4 to 4.5 × 10−6 K−1 and a Young’s modulus of 40 to 45 GPa is obtained.
Keywords: cordierite; geopolymer; Young’s modulus; coefficient of thermal expansion cordierite; geopolymer; Young’s modulus; coefficient of thermal expansion

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MDPI and ACS Style

Casarrubios, F.; Marlier, A.; Lang, C.; Abdelouhab, S.; Mastroianni, I.; Bister, G.; Gonon, M.-F. Characterization of the Evolution with Temperature of the Structure and Properties of Geopolymer-Cordierite Composites. Ceramics 2024, 7, 1513-1532. https://doi.org/10.3390/ceramics7040098

AMA Style

Casarrubios F, Marlier A, Lang C, Abdelouhab S, Mastroianni I, Bister G, Gonon M-F. Characterization of the Evolution with Temperature of the Structure and Properties of Geopolymer-Cordierite Composites. Ceramics. 2024; 7(4):1513-1532. https://doi.org/10.3390/ceramics7040098

Chicago/Turabian Style

Casarrubios, Franklin, Alexandre Marlier, Charlotte Lang, Sandra Abdelouhab, Isabella Mastroianni, Geoffroy Bister, and Maurice-François Gonon. 2024. "Characterization of the Evolution with Temperature of the Structure and Properties of Geopolymer-Cordierite Composites" Ceramics 7, no. 4: 1513-1532. https://doi.org/10.3390/ceramics7040098

APA Style

Casarrubios, F., Marlier, A., Lang, C., Abdelouhab, S., Mastroianni, I., Bister, G., & Gonon, M.-F. (2024). Characterization of the Evolution with Temperature of the Structure and Properties of Geopolymer-Cordierite Composites. Ceramics, 7(4), 1513-1532. https://doi.org/10.3390/ceramics7040098

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