Počet záznamů: 1  

Young’s modulus of different illitic clays during heating and cooling stage of firing

  1. 1.
    SYSNO ASEP0539287
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevYoung’s modulus of different illitic clays during heating and cooling stage of firing
    Tvůrce(i) Húlan, T. (SK)
    Štubňa, J. (SK)
    Ondruška, J. (SK)
    Csáki, Štefan (UFP-V) ORCID
    Lukáč, František (UFP-V) ORCID
    Mánik, M. (SK)
    Vozár, L. (SK)
    Ozolins, J. (LV)
    Kaljuvee, T. (EE)
    Trník, A. (CZ)
    Celkový počet autorů10
    Číslo článku4968
    Zdroj.dok.Materials. - : MDPI
    Roč. 13, č. 21 (2020), s. 1-14
    Poč.str.14 s.
    Jazyk dok.eng - angličtina
    Země vyd.CH - Švýcarsko
    Klíč. slovaClay ; Illite ; Quartz ; Thermal expansion ; Young’s modulus
    Vědní obor RIVJP - Průmyslové procesy a zpracování
    Obor OECDMaterials engineering
    Způsob publikováníOpen access
    Institucionální podporaUFP-V - RVO:61389021
    UT WOS000589246800001
    EID SCOPUS85095775695
    DOI10.3390/ma13214968
    AnotaceDynamical thermomechanical analysis of 5 illite-based clays from deposits in Slovakia, Estonia, Latvia, and Hungary is presented. The clays consist of illite (37–80 mass%), quartz (12–48 mass%), K-feldspar (4–13 mass%), kaolinite (0–18 mass%), and calcite (0–3 mass%). Young’s modulus is measured during the heating and cooling stages of firing (25◦C → 1100◦C → 25◦C). The liberation of the physically bound water increases Young’s modulus by ∼70% for all studied clays. By increasing the temperature, dehydroxylation and the α → β transition of quartz take place without a significant effect on Young’s modulus. Sintering, which starts at 800◦C, leads to an intensive increase in Young’s modulus up to the highest temperature (1100◦C). The increase remains also in the early stage of cooling (1100◦C → 800◦C). This increase of Young’s modulus is also the result of solidification of the glassy phase, which is finished at ∼750◦C. A sharp minimum of Young’s modulus is observed at around the β → α transition of quartz. Then, Young’s modulus still decreases its value down to the room temperature. The physical processes observed during heating and cooling do not differ in nature for the studied clays. Values of Young’s modulus vary at around 8 GPa, up to 800◦C. During sintering, Young’s modulus reaches values from 30 GPa to 70 GPa for the studied clays. The microstructure and composition given by the origin of the clay play a cardinal role for the Young’s modulus of the final ceramic body.
    PracovištěÚstav fyziky plazmatu
    KontaktVladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975
    Rok sběru2021
    Elektronická adresahttps://www.mdpi.com/1996-1944/13/21/4968
Počet záznamů: 1  

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