Effect of Li2O on melt crystallization of CaO–SiO2–CaF2 based glasses
Source abstract
Abstract
Abstract This paper presents the effects of Li2O on the kinetics and structural aspects of the Cuspidine (Ca4Si2F2O7) crystallization behavior of CaO–SiO2–CaF2 glass (basicity 1.7). In order to elucidate the crystallization characteristics during differential scanning calorimetry (DSC) measurements, the kinetic parameters have been determined using the Johnson-Mehl-Avrami-Kolmogorov (JMAK) equation. The crystallization rate constant and negative activation energy thus calculated indicated that the limiting step of crystallization was nucleation. Also, Raman spectroscopy and Solid-state MAS NMR spectroscopy analyses indicated that lithium could interact with fluorine, thereby disturbing the interaction between calcium and fluorine. This retards Cuspidine nucleation at the initial stage of melt crystallization. These findings on CaO–SiO2–CaF2-based glass lubricants can be used to optimize essential properties such as viscosity and crystallization temperature during continuous casting of steels.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Glass properties and applications · Metallurgical Processes and Thermodynamics · Cultural Heritage Materials Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (37)
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1. Performance and properties of mould fluxes10.1179/174328105X15788 ↗
2. Radiative heat transfer through mold flux film during initial solidification in continuous casting of steel10.2355/isijinternational.38.268 ↗
3. The role of mould fluxes in continuous casting-so simple yet so complex10.2355/isijinternational.43.1479 ↗
4. Thermal resistance at the interface between mold flux film and mold for continuous casting of steels10.2355/isijinternational.38.440 ↗
5. Heat transfer across mold flux film in mold during initial solidification in continuous casting of steel10.2355/isijinternational.38.834 ↗
6. Non-isothermal melt crystallization of Cuspidine in CaO–SiO2–CaF2 based glasses10.1016/j.jnoncrysol.2015.01.008 ↗
7. A kinetic study of the effect of basicity on the mold fluxes crystallization10.1007/s11663-011-9591-5 ↗
8. Effect of alkali oxides on crystallization in CaO–SiO2–CaF2 glasses10.2355/isijinternational.48.925 ↗
9. High temperature reactions in mold flux slags: kinetic versus composition control10.1016/j.jnoncrysol.2007.05.019 ↗
10. Crystallization behaviors of CaO-SiO 2-Al 2 O 3-Na 2 O-CaF 2-(Li 2 OB 2 O 3) mold fluxes10.1007/s11663-014-0091-2 ↗
11. Crystallization behaviors of mold fluxes containing Li2O using single hot thermocouple technique10.2355/isijinternational.49.843 ↗
12. Observation of the crystallization behavior of a slag containing 46 wt pct CaO, 46 wt pct SiO 2, 6 wt pct Al 2 O 3, and 2 wt pct Na 2 O using the double hot thermocouple technique10.1007/s11663-005-0072-6 ↗
13. Influence of CaF 2 and Li 2 O on the viscous behavior of calcium silicate melts containing 12 wt pct Na 2 O10.1007/s11663-011-9474-9 ↗
14. Eisenhüttenleute · 1995
15. Mysen · 2018
16. Controlling shear thinning property of lime silica based mold flux system with borate additive at 1623 K10.1016/j.jnoncrysol.2015.05.032 ↗
17. Study by Raman spectroscopy of crystalline and glassy diopside
18. Kinetics of isothermal melt crystallization in CaO-SiO 2-CaF 2-based mold fluxes10.1007/s11663-015-0358-2 ↗
19. Kinetics of phase change. I General theory10.1063/1.1750380 ↗
20. Kinetics of phase change. II transformation‐time relations for random distribution of nuclei10.1063/1.1750631 ↗
21. Non-isothermal crystallization kinetics of silane crosslinked polyethylene10.1016/j.polymertesting.2004.07.007 ↗
22. Crystallization of polyolefins
23. Thermal properties and isothermal crystallization of syndiotactic polypropylenes: differential scanning calorimetry and overall crystallization kinetics10.1002/(SICI)1097-4628(20000103)75:1<44::AID-APP6>3.0.CO;2-1 ↗
24. Isothermal crystallization and melting behaviors of nylon 11/nylon 66 alloys by in situ polymerization10.1016/j.polymer.2006.01.077 ↗
25. Crystallization kinetics of polymers
26. Crystallization behaviour of poly (ether-ether-ketone)10.1016/0032-3861(86)90006-6 ↗
27. Isoconversional analysis of calorimetric data on nonisothermal crystallization of a polymer melt10.1021/jp026592k ↗
28. Crystallization kinetics and nucleation activity of filler in polypropylene/surface-treated SiO2 nanocomposites10.1016/j.tca.2004.09.001 ↗
29. Structure and its effect on viscosity of fluorine-free mold flux: substituting CaF2 with B2O3 and Na2O10.1016/j.jnoncrysol.2019.119756 ↗
30. Structure–property relationship of CaO-MgO-SiO 2 slag: quantitative analysis of Raman spectra10.1007/s11663-013-9825-9 ↗
31. Effect of additives on viscosity of LATS refining ladle slag10.2355/isijinternational.46.637 ↗
32. High field multinuclear NMR investigation of the SEI layer in lithium rechargeable batteries10.1149/1.1854117 ↗
33. Characterization of the structure of calcium alumino-silicate and calcium fluoro-alumino-silicate glasses by magic angle spinning nuclear magnetic resonance (MAS-NMR)10.1016/j.jnoncrysol.2003.09.049 ↗
34. Effect of fluorine on silicate network for CaO-CaF2-SiO2 and CaO-CaF2-SiO2-FeOx glasses10.2355/isijinternational.42.352 ↗
35. The nature of fluorine in amorphous silica10.1016/j.jnoncrysol.2004.03.122 ↗
36. 6Li, 7Li nuclear magnetic resonance investigation of lithium coordination in binary phosphate glasses10.1016/S0022-3093(99)00481-0 ↗
37. A Raman and MAS NMR study of mixed alkali Na–K and Na–Li aluminoborosilicate glasses10.1016/j.jnoncrysol.2004.05.010 ↗