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dc.contributor.author | Liles, David C.![]() |
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dc.contributor.author | De Villiers, J.P.R. (Johan)![]() |
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dc.contributor.author | Kahlenberg, Volker![]() |
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dc.date.accessioned | 2017-05-10T05:56:37Z | |
dc.date.available | 2017-05-10T05:56:37Z | |
dc.date.issued | 2016-02 | |
dc.description.abstract | Crystals of a silico-ferrite of calcium and aluminium (SFCA) and an Al-free SFC were prepared from the melt by slow cooling of synthetically prepared mixtures and examined by single-crystal diffraction methods. Both crystals belong to the space group P-1. SFC has lattice parameters a = 9.1255(3) Å, b = 10.1189(3) Å, c = 10.6183(2) Å, α = 63.9554(9)°, β = 84.4964(11)°, γ = 65.6706(9)° with a final R(|F|) = 0.024. SFCA has a cell with a = 9.0738(9)Å, b = 10.0474(10)Å, c = 10.5611(10) Å, α = 64.061(3)°, β = 84.356(3)°, γ = 65.722(3)° with a final R(|F|) = 0.030. The SFC structure was transformed to the cell used by Hamilton et al. (1989) and refined to an R(|F|) = 0.024. All the atomic positions are equivalent to those reported by Hamilton et al. (1989) with the exception of one (Ca,Fe) position and two oxygen positions that are displaced from the published positions by 0.5y (Ca,Fe1), 0.5z (O4), or 0.5x (O12). This is ascribed to transcription errors in the published crystal structure data. The calculated powder pattern of SFCA (this study) was compared with the experimental data and it shows that the low angle peak intensities agree significantly better than those calculated from the published atomic positions. Additional electron density is located in proximity to the octahedral and tetrahedral cation sites of the main structure. These positions, coupled with the partially occupied cation sites of the main structure, suggest a minor sharing of cations between the main cation sites and the additional sites. | en_ZA |
dc.description.department | Chemistry | en_ZA |
dc.description.department | Materials Science and Metallurgical Engineering | en_ZA |
dc.description.librarian | hb2017 | en_ZA |
dc.description.uri | http://link.springer.com/journal/710 | en_ZA |
dc.identifier.citation | Liles, DC, De Villiers, JPR & Kahlenberg, V 2016, 'Refinement of iron ore sinter phases : a silico-ferrite of calcium and aluminium (SFCA) and an Al-free SFC, and the effect on phase quantification by X-ray diffraction', Mineralogy and Petrology, vol. 110, no. 1, pp. 141-147. | en_ZA |
dc.identifier.issn | 0930-0708 (print) | |
dc.identifier.issn | 1438-1168 (online) | |
dc.identifier.other | 10.1007/s00710-015-0411-5 | |
dc.identifier.uri | http://hdl.handle.net/2263/60301 | |
dc.language.iso | en | en_ZA |
dc.publisher | Springer | en_ZA |
dc.rights | © Springer-Verlag Wien 2015. The original publication is available at : http://link.springer.comjournal/710. | en_ZA |
dc.subject | Crystals | en_ZA |
dc.subject | X-ray diffraction | en_ZA |
dc.subject | Refinement of iron ore sinter phases | en_ZA |
dc.subject | Silico-ferrite of calcium and aluminium (SFCA) | en_ZA |
dc.subject | Al-free SFC | en_ZA |
dc.subject.other | Engineering, built environment and information technology articles SDG-04 | |
dc.subject.other | SDG-04: Quality education | |
dc.subject.other | Engineering, built environment and information technology articles SDG-07 | |
dc.subject.other | SDG-07: Affordable and clean energy | |
dc.subject.other | Engineering, built environment and information technology articles SDG-08 | |
dc.subject.other | SDG-08: Decent work and economic growth | |
dc.subject.other | Engineering, built environment and information technology articles SDG-09 | |
dc.subject.other | SDG-09: Industry, innovation and infrastructure | |
dc.subject.other | Engineering, built environment and information technology articles SDG-12 | |
dc.subject.other | SDG-12: Responsible consumption and production | |
dc.subject.other | Engineering, built environment and information technology articles SDG-13 | |
dc.subject.other | SDG-13: Climate action | |
dc.title | Refinement of iron ore sinter phases : a silico-ferrite of calcium and aluminium (SFCA) and an Al-free SFC, and the effect on phase quantification by X-ray diffraction | en_ZA |
dc.type | Postprint Article | en_ZA |