Number of the records: 1
Physical and nanomechanical properties of the synthetic anhydrous crystalline CaCO3 polymorphs: vaterite, aragonite and calcite
- 1.
SYSNO ASEP 0482555 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Physical and nanomechanical properties of the synthetic anhydrous crystalline CaCO3 polymorphs: vaterite, aragonite and calcite Author(s) Ševčík, Radek (UTAM-F) RID, SAI, ORCID
Šašek, Petr (UTAM-F) RID, ORCID, SAI
Viani, Alberto (UTAM-F) RID, ORCID, SAINumber of authors 3 Source Title Journal of Materials Science. - : Springer - ISSN 0022-2461
Roč. 53, č. 6 (2018), s. 4022-4033Number of pages 12 s. Publication form Print - P Language eng - English Country US - United States Keywords X-ray-diffraction ; thermal expansion ; mechanical characterization ; relative-humidity ; carbonates ; mortars Subject RIV CA - Inorganic Chemistry OECD category Inorganic and nuclear chemistry R&D Projects LO1219 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA17-05030S GA ČR - Czech Science Foundation (CSF) UT WOS 000418294200008 EID SCOPUS 85037671784 DOI https://doi.org/10.1007/s10853-017-1884-x Annotation 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. Workplace Institute of Theoretical and Applied Mechanics Contact Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Year of Publishing 2019 Electronic address https://doi.org/10.1007/s10853-017-1884-x
Number of the records: 1