Synthesis of monocrystalline Ca3SiO5 using the optical floating zone method

Naber C, Götz-Neunhoeffer F, Göbbels M, Rößler C, Neubauer J (2016)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2016

Journal

Publisher: Elsevier Ltd

Book Volume: 85

Pages Range: 156-162

DOI: 10.1016/j.cemconres.2016.04.008

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).

Authors with CRIS profile

Involved external institutions

Bauhaus-Universität Weimar Germany (DE)

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://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.

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