Determination of the activation energy for crystal growth by differential thermal analysis

Matusita, Kazumasa; Sakka, Sumio; Matsui, Yoshio

doi:10.1007/bf00823212

Cited by 145 publications

(106 citation statements)

References 9 publications

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“…Another useful parameter is the numerical factor, m, which depends on the dimensionality of crystal growth and is derived from the Matusita and Sakka equation for non-isothermal DTA experiments [27][28][29]:…”

Section: Methodsmentioning

confidence: 99%

Effect of particle size on kinetics crystallization of an iron-rich glass

2008

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The effect of glass particle size on the crystallization kinetics of an iron-rich glass from a nickel leaching waste has been investigated by means of differential thermal analysis (DTA). The results show that the crystallization of a pyroxene phase occurs by bulk nucleation from a constant number of nuclei. The crystallization mode and the dimensionality of crystals are strongly dependent of the glass particle size, being 100µm the critical size. Glass fractions with particle size >100µm show three-dimensional crystals growth controlled by diffusion whereas a particle size <100µm leads to an interface reaction mechanism with two-dimensional growth of crystals.

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Section: Methodsmentioning

confidence: 99%

Effect of particle size on kinetics crystallization of an iron-rich glass

2008

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“…In addition, when surface crystallization predominates, it was suggested in several papers [2,3,10] to use m=n=l so that Eq. (2) Figure 3 reports a set of DTA measurements of A glass at different heating rates, where the shift in the maximum peak temperature, Tp, is clearly visible.…”

Section: The Kissinger Equationmentioning

confidence: 99%

“…For sake of precision it should be pointed out that Matusita and Sakka [2][3] have stated that Eq. (1) can be used when the crystals grow on a fixed number of nuclei, while during a nonisothermal DTA measurement some corrections should be made:…”

Section: The Kissinger Equationmentioning

confidence: 99%

Kinetic study of surface nucleated MgO-CaO-Al2O3-SiO2 glasses

Barbieri

Leonelli

Manfredini

et al. 1992

Journal of Thermal Analysis

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The paper investigated, by means of thermal analysis measurements, the validity of three different methods for the evaluation of the activation energy of crystallization for surface nucleated glasses belonging to the MgO--CaO-AI203-SiO2 system, separating anorthite and diopside crystals. The values obtained from Kissinger equation of the activation energy for crystallization are comparable with those obtained by other authors for similar glassy systems, 90 to 150 keal/mol. The results of the kinetic analysis using single-crystallization-peak method should be corrected taking into account the dimensionality of crystal growth.

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“…Generally m=n−1 (for n≠1) [34]. Hence, from the values of n and m, mechanism of crystallization can be inferred.…”

Section: Glass Transition and Crystallization Kineticsmentioning

confidence: 99%

Effect of mixed glass formers on the crystallization kinetics in AgI–Ag2O–V2O5–MoO3 glassy superionic system

Gupta

Dalvi

2011

Ionics

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The crystallization and glass transition kinetics using differential scanning calorimetry (DSC) in 50AgI-33.33Ag 2 O-16.67[(V 2 O 5 ) 1−x -(MoO 3 ) x ] superionic glassy system is discussed. Thermal stability of glass, studied using various criteria, does not vary significantly with glass former variation. However, the activation energies for structural relaxation (E s ) at glass transition temperature and crystallization (E c ) obtained using Moynihan and Kissinger, Matusita-Sakka formulations found to exhibit interesting trends with MoO 3 substitution in the glass matrix. It is noticed that the electrical conductivity (σ)-temperature (T) cycles obtained at a typical heating rate of 1°C/min do exhibit significant thermal events. The conductivity after first heating cycle at room temperature is found to be increasing with MoO 3 content and maximum for x=0.3 (~10 −3 Ω −1 cm −1 at 30°C) which is comparable to that of the host 50AgI-33.33Ag 2 O-16.67V 2 O 5 glassy system. The parameters obtained from σ-T plots and DSC scans do complement each other in a particular range of composition.

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Determination of the activation energy for crystal growth by differential thermal analysis

Cited by 145 publications

References 9 publications

Effect of particle size on kinetics crystallization of an iron-rich glass

Effect of particle size on kinetics crystallization of an iron-rich glass

Kinetic study of surface nucleated MgO-CaO-Al2O3-SiO2 glasses

Effect of mixed glass formers on the crystallization kinetics in AgI–Ag2O–V2O5–MoO3 glassy superionic system

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