Elastic properties and microstructure evolution of Zninf2/infSnOinf4/inf-spinel-containing composite ceramics based on tin oxide and zinc oxide

0585873 - ÚACH 2025 RIV NL eng J - Článek v odborném periodiku
Šimonová, P. - Kotrbová, L. - Pabst, W. - Nečina, V. - Bezdička, Petr
Elastic properties and microstructure evolution of Zninf2/infSnOinf4/inf-spinel-containing composite ceramics based on tin oxide and zinc oxide.
Journal of the European Ceramic Society. Roč. 44, č. 11 (2024), s. 6586-6596. ISSN 0955-2219. E-ISSN 1873-619X
Grant CEP: GA MŠMT(CZ) LM2023066
Institucionální podpora: RVO:61388980
Klíčová slova: Elastic properties * Microstructure * Tin oxide * Tin-zinc-spinel (Zn SnO ) 2 4 * Zinc oxide
Obor OECD: Inorganic and nuclear chemistry
Impakt faktor: 5.7, rok: 2022
Způsob publikování: Omezený přístup
https://doi.org/10.1016/j.jeurceramsoc.2024.04.029

Ceramics based on tin oxide (SnO2) and zinc oxide (ZnO) were sintered at temperatures up to 1400 °C. Except for the end members, all these ceramics are two- or three-phase composites containing spinel phase (Zn2SnO4). Similar to pure SnO2 ceramics, also the spinel-rich composite (50:50 mixture) does not exhibit densification after sintering at 1400 °C. Spinel Zn2SnO4 is formed in all composites, with a major increase of spinel content at around 1000 °C. Young's modulus values, determined via impulse excitation, are between the exponential relation for convex pores and a benchmark relation for concave pores (or a percolation relation). The evolution of Young's modulus during sintering reveals significant differences between SnO2 (weak increase above 1000 °C), ZnO (significant increase above 800 °C) and the composites (intermediate). Spinel formation is revealed during heating by a distinct peak (elastic anomaly) at around 1000 °C.
Trvalý link: https://hdl.handle.net/11104/0353510