Modeling of dissolution kinetics of rare earth crystals in a borosilicate glass melt
Source abstract
Abstract
Abstract The novelty of this work is the comparison of two methods to determine the dissolution kinetics in order to evaluate the applicability of the Johnson-Mehl-Avrami-Kolmogorov (JMAK) model for the crystals dissolution in silicate melts. For this, this work focuses on the dissolution of rare earth (RE) silicates (Ca2RE8(SiO4)6O2 where RE = Nd) with an apatite structure in a sodium-borosilicate glass melt. The first approach consists in the characterization of the dissolution kinetics by following the crystalline area fraction by image analysis as a function of time and temperature. Then, a model based on the generalized JMAK equation is proposed to fit the experimental data. This model enables to determine both the mechanism limiting the dissolution (i.e. the diffusion) and the activation energy of crystals dissolution in the studied glass system (496 kJ/mol). To support these results, a second and most common approach is the measure of the chemical profiles at the crystal/melt interfaces by microprobe. The conclusions obtained by this last method are in agreement with the conclusions based on JMAK model. All these results allowed to confirm that the JMAK model is well suited to model crystals dissolution in silicate melts.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Glass properties and applications · Recycling and utilization of industrial and municipal waste in materials production · Metallurgical Processes and Thermodynamics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (34)
Show source-provided references
1. Kinetics of crystal dissolution in the system diopside-forsterite-silica10.2475/ajs.285.1.51 ↗
2. Diffusive crystal dissolution10.1007/BF00371090 ↗
3. Diffusion in minerals and melts: theoretical background, reviews in mineralogy
4. Convective crystal dissolution10.1007/BF02688239 ↗
5. The rates of dissolution of olivine, plagioclase, and quartz in a basalt melt10.1180/minmag.1985.049.354.07 ↗
6. The effect of experiment geometry on the mechanism and rate of dissolution of quartz in basanite at 0.5GPa and 1350°C10.1007/s004100000153 ↗
7. Dissolution of corundum and andalusite in H2O-saturated haplogranitic melts at 800°C and 200MPa: contraints on diffusivities and the generation of peraluminous melts10.1093/petrology/43.10.1885 ↗
8. Clinopyroxene dissolution in basaltic melt10.1016/j.gca.2009.06.016 ↗
9. Crystallization during nuclear waste glass10.1016/j.jnoncrysol.2010.03.039 ↗
10. Crystallisation of simulated borosilicate high-level waste produced on a full-scale vitrification line10.1016/j.jnoncrysol.2011.04.003 ↗
11. Image analysis study of crystallization in two glass compositions of nuclear interest10.1016/j.jnoncrysol.2013.07.029 ↗
12. Etude des caractéristiques structurales et des propriétés de verres riches en Terres Rares destinées au confinement des produits de fission et élément à vie longue
13. Etude de la structure et du comportement en cristallisation d'un verre nucléaire d'aluminoborosilicate de terre rare
14. Structure, Stabilité thermique et résistance sous irradiation externe de verres aluminoborosilicatés riches en Terres Rares et en molybdène
15. Kolmogorov · Izv. Akad. Nauk SSSR, Ser. Fiz. · 1937 · 3 · 355
16. Reactions kinetics in processes of nucleation and growth
17. Kinetics of phase change. I. General theory10.1063/1.1750380 ↗
18. Kinetics of phase change. II. Transformation-time relations for random distribution of nuclei10.1063/1.1750631 ↗
19. Kinetics of phase change. III. Granulation, phase change and microstructure10.1063/1.1750872 ↗
20. Etude de la stabilité thermique du verre nucléaire, modélisation de son évolution à long terme
21. DTA peak shift studies of primary crystallization in glasses10.1016/S0022-3093(02)01814-8 ↗
22. Effect of titanium addition on crystallization kinetics of lithium borosilicate glass10.1016/j.jallcom.2008.07.145 ↗
23. The applicability of the general theory of phase transformations to glass crystallization10.1016/0040-6031(95)02636-3 ↗
24. A dissolution kinetics model and its application to duplex stainless steels10.1016/j.actamat.2013.01.034 ↗
25. Christian · 1975
26. Direct observations of sigma phase formation in duplex stainless steels using in-situ synchrotron X-ray diffraction10.1007/s11661-006-9076-3 ↗
27. Simulation study of effects of initial particle size distribution on dissolution10.1016/j.actamat.2008.09.010 ↗
28. Delattre · 2014
29. The liquidus temperature of nuclear waste glasses: an international Round-Robin study10.1111/j.2041-1294.2011.00063.x ↗
30. Monazite solubility and dissolution kinetics: implications for the thorium and light rare earth chemistry of felsic magmas10.1007/BF00371439 ↗
31. Diffusivity of strontium, neodymium, and lead in natural rhyolite melt at 1.0GPa10.1016/0016-7037(96)00016-6 ↗
32. Chemical diffusivities of 18 trace elements in granitoid melts10.1016/S0016-7037(99)00209-4 ↗
33. Trace element diffusion in andesitic melts: an application of synchrotron X-ray fluorescence analysis10.1016/S0016-7037(01)00550-6 ↗
34. Trace element diffusion and viscous flow in potassium-rich trachytic and phonolitic melts10.1016/j.chemgeo.2008.10.014 ↗