Synthesis of monocrystalline Ca3SiO5 using the optical floating zone method

Journal article
(Original article)


Publication Details

Author(s): Naber C, Götz-Neunhoeffer F, Göbbels M, Rößler C, Neubauer J
Journal: Cement and Concrete Research
Publisher: Elsevier Ltd
Publication year: 2016
Volume: 85
Pages range: 156-162
ISSN: 0008-8846
Language: English


Abstract


Alite (CaSiO/CS with low concentrations of foreign ions) is the main constituent of Ordinary Portland Cement. Normally it forms during sintering but with quite low crystal sizes (ca. 30 μm). For experiments on alite hydration behavior monocrystalline grains are required. Due to its incongruent melting behavior and its thermodynamic instability below 1250 °C it is very challenging to obtain large alite single crystals. In the present study, the floating zone method was used for annealing polycrystalline rods of monoclinic and triclinic CS just below the melting point of the phase. Large monocrystalline grains (> 500 μm) of the monoclinic (Al, Mg-doped) and triclinic polymorphs could successfully be obtained. Monocrystallinity was demonstrated by electron backscatter diffraction (EBSD). The chemical composition regarding incorporation of foreign ions and thus the resulting crystallographic modification of the CS can easily be adjusted. Chemical homogeneity of the synthesized monocrystalline grains was proven by electron probe microanalysis (EPMA).



FAU Authors / FAU Editors

Göbbels, Matthias Prof. Dr.
Lehrstuhl für Mineralogie
Götz-Neunhoeffer, Friedlinde Prof. Dr.
Naturwissenschaftliche Fakultät
Naber, Christoph
Lehrstuhl für Mineralogie
Neubauer, Jürgen apl. Prof. Dr.
Lehrstuhl für Mineralogie


External institutions
Bauhaus-Universität Weimar


How to cite

APA:
Naber, C., Götz-Neunhoeffer, F., Göbbels, M., Rößler, C., & Neubauer, J. (2016). Synthesis of monocrystalline Ca3SiO5 using the optical floating zone method. Cement and Concrete Research, 85, 156-162. https://dx.doi.org/10.1016/j.cemconres.2016.04.008

MLA:
Naber, Christoph, et al. "Synthesis of monocrystalline Ca3SiO5 using the optical floating zone method." Cement and Concrete Research 85 (2016): 156-162.

BibTeX: 

Last updated on 2018-18-11 at 13:50