Thermodynamic evaluation of Sr-containing Si metals and silicate melts for Si-Sr alloy production
| Autor: | L.K. Jakobsson, Kai Tang, K. Hildal |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Alloy Metals and Alloys thermodynamic evaluation 02 engineering and technology engineering.material Geotechnical Engineering and Engineering Geology 01 natural sciences Si-Sr-Al-Ca-Fe-Mg metal Silicate 020501 mining & metallurgy chemistry.chemical_compound 0205 materials engineering chemistry Chemical engineering 0103 physical sciences Materials Chemistry engineering SiO2-SrO-CaO-MgO-Al2O3 oxide Sr equilibrium distribution |
| Zdroj: | Journal of the Southern African Institute of Mining and Metallurgy, Volume: 118, Issue: 6, Pages: 601-605, Published: JUN 2018 |
| ISSN: | 2411-9717 2225-6253 |
| DOI: | 10.17159/2411-9717/2018/v118n6a7 |
| Popis: | Reliable thermodynamic descriptions of the Si-based Sr-Al-Ca-Fe-Mg metal system and SiO2-SrO-CaO-MgO-Al2O3 oxide system are essential for the understanding and optimizing the production of Si-Sr alloys. Phase relations of all SrO containing binary and ternary subsystems were evaluated and thermodynamically modelled based on the existing literature data. Phase equilibria in the SiO2-SrO-CaO-MgO-Al2O3 higher-order oxide system were thus possible to calculate by the CALPHAD method. A thermodynamic description of the Si-Sr-Al-Ca-Fe-Mg metal system was developed based on assessment of all binary systems as well as all Si containing ternary subsystems. The newly developed thermochemical databases can be used to calculate the equilibrium distribution of Sr between metal and slag. The theoretical Sr distribution maps for both pure Si and 75FeSi alloys in different SrO-containing slags are reported. |
| Databáze: | OpenAIRE |
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