Počet záznamů: 1
Physical and nanomechanical properties of the synthetic anhydrous crystalline CaCO3 polymorphs: vaterite, aragonite and calcite
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SYSNO ASEP 0482555 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Physical and nanomechanical properties of the synthetic anhydrous crystalline CaCO3 polymorphs: vaterite, aragonite and calcite Tvůrce(i) Ševčík, Radek (UTAM-F) RID, SAI, ORCID
Šašek, Petr (UTAM-F) RID, ORCID, SAI
Viani, Alberto (UTAM-F) RID, ORCID, SAICelkový počet autorů 3 Zdroj.dok. Journal of Materials Science. - : Springer - ISSN 0022-2461
Roč. 53, č. 6 (2018), s. 4022-4033Poč.str. 12 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova X-ray-diffraction ; thermal expansion ; mechanical characterization ; relative-humidity ; carbonates ; mortars Vědní obor RIV CA - Anorganická chemie Obor OECD Inorganic and nuclear chemistry CEP LO1219 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy GA17-05030S GA ČR - Grantová agentura ČR UT WOS 000418294200008 EID SCOPUS 85037671784 DOI https://doi.org/10.1007/s10853-017-1884-x Anotace The synthetic anhydrous crystalline CaCO3 polymorphs—vaterite, aragonite and calcite—were tested using dilatometry and nanoindentation. Microstructural changes in the samples before and after measurements were observed under scanning electron microscope and their phase composition quantified with X-ray powder diffraction (XRPD) with the Rietveld method. The thermal expansion coefficients of vaterite and the hardness and elastic modulus of synthetic aragonite are reported for the first time. The physical and nanomechanical properties were measured under similar conditions for each CaCO3 polymorph. Aragonite, calcite and vaterite showed volumetric thermal expansion coefficient at 303 K of 49.2(8), 48.6(2) and 44.1(3) 10−6 K−1, respectively. The elastic modulus increased from 5(4), 16(7) to 31(8) GPa for aragonite, calcite and vaterite, respectively. Average hardness was found lower than values from the literature, ranging from 0.3 to 1.3 GPa. The results are considered of interest for the design of CaCO3-based materials for applications. Pracoviště Ústav teoretické a aplikované mechaniky Kontakt Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Rok sběru 2019 Elektronická adresa https://doi.org/10.1007/s10853-017-1884-x
Počet záznamů: 1