Kinetics of non-isothermal crystallization process and activation energy for crystal growth in amorphous materials

Matusita, Kazumasa; Komatsu, Takayuki; Yokota, Ryosuke

doi:10.1007/bf00553020

Cited by 132 publications

(104 citation statements)

References 24 publications

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“…[25][26][27][28] One of these methods is the well-known Matusita-Sakka model. Matusita and coworkers [29][30][31] emphasized that the crystallization mechanism, such as bulk crystallization or surface crystallization, should be taken into consideration for acquiring the meaningful activation energy. They have proposed that if a glass is heated at a invariable heating rate, the nucleation process occurs at temperatures somewhat higher than the glass transition temperature and reaches the maximum nucleation rate, so crystal nuclei no longer increases in number during the crystal growth (forming the DTA peak) and the activation energies for crystal growth can be estimated by analyzing the DTA crystallization peak 26,[29][30][31] Main equation that they derived is as follows:…”

Section: Crystallization Kineticsmentioning

confidence: 99%

Crystallization Kinetics of CaO-SiO2(CaO/SiO2=1)-TiO2-10 mass%B2O3 Glassy Slag by Differential Thermal Analysis

2015

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Crystallization characteristics of the CaO-SiO2-TiO2-10%B2O3 glassy slag at w(CaO)/w(SiO2)=1 have been studied by Differential Thermal Analysis (DTA) and Matusita-Sakka method. Crystallization products have been distinguished by employing X-ray diffraction (XRD) and Scanning Electron Microscopy equipped with Energy Dispersive Spectroscopy (SEM-EDS). As the TiO2 content is within 10-18%, the crystal phase precipitated is mainly CaSiO3, and the effective activation energies for crystal growth increase with the increase of TiO2 content. Crystallization mechanism for CaSiO3 shifted from surface crystallization to onedimensional growth with increase of TiO2. As the TiO2 content in slag further increases to 22% and 26%, CaTiSiO5 becomes the predominant crystal phase precipitated, and the effective activation energies for crystal growth decrease with the increase of TiO2 content. Crystallization mechanism for CaTiSiO5 is mainly surface crystallization. Therefore, with the increase of TiO2 content, the crystallization ability of the CaO-SiO2-TiO2-10%B2O3 glass system decreases initially and then increases.

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Section: Crystallization Kineticsmentioning

confidence: 99%

Crystallization Kinetics of CaO-SiO2(CaO/SiO2=1)-TiO2-10 mass%B2O3 Glassy Slag by Differential Thermal Analysis

2015

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“…In this case, transformation under non-isothermal condition is described as a first-order reaction. Figure 2 represents the relation of ln(T p 2 /a n ) to 1000/T p according to the Kissinger-Matusita model [12,16,17] which is described as: …”

Section: Methodsmentioning

confidence: 99%

Influence of Gd2O3 on thermal stability of oxyfluoride glasses

Kasprzyk

Środa

Szumera

2017

J Therm Anal Calorim

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The aim of the research was to determine the influence of Gd 2 O 3 addition on the thermal stability of glasses from BaF 2 -NaF-Na 2 O-Gd 2 O 3 -Al 2 O 3 -SiO 2 system. Thermal analysis was carried out using DSC method. An impact of Gd 2 O 3 on thermal parameters such as transformation temperature (T g ), onset temperature of crystallization (T x ), peak crystallization temperature (T p ), change of specific heat (DC p ) and enthalpy of crystallization (DH) was determined. On the basis of thermal analysis, controlled crystallization was conducted. The glass-ceramic materials were identified by XRD. Crystallization kinetics of the glasses was made on the basis of two models: Kissinger and Ozawa. Changes of the glass structure were evaluated in FTIR study. It was determined that the addition of Gd 2 O 3 to the aluminosilicate glass increases the transformation temperature, simultaneously with reducing the Dc p and thermal stability DT values. It results in the decrease of DH. As shown, Gd significantly increases the crystallization activation energy of NaAlSi 3 O 8 . Complete substitution of Al 2 O 3 with Gd 2 O 3 leads to forming of Gd 9.33 (SiO 4 ) 6 O 2 . Forming of Na-silicates is not observed. Because of the participation of Gd in forming of fluoride phases (BaGdF 5 , GdF 3 ), crystallization of Gd 9.33 (SiO 4 ) 6 O 2 is impeded.

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“…In the non-isothermal method, the crystallized fraction x, precipitated in a glass heated at constant rate α, is related to the activation energy for crystallization E c through the following expression [23] [24] ( )…”

Section: Matusita Modelmentioning

confidence: 99%

Kinetic Study of Non-Isothermal Crystallization in Se90-xZn10Sbx (x = 0, 2, 4, 6) Chalcogenide Glasses

Heireche¹,

Heireche²,

Belhadji³

2014

JCPT

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Crystallization and glass transition kinetics of Se90−xZn10Sbx (x = 0, 2, 4, 6) chalcogenide glasses prepared by conventional melt-quenching technique were studied under non-isothermal condition using a differential scanning Calorimeter (DSC) measurement at different heating rates 5, 7, 10 and 12˚C/min. The glass transition temperatures Tg, the crystallization temperatures Tc and the peak temperatures of crystallization Tp were found to be dependent on the compositions and the heating rates. From the dependence on the heating rates of Tg and Tp, the activation energy for glass transition, Eg, and the activation energy for crystallization, Ec, are calculated and their composition dependence is discussed. The activation energy of glass transition Eg, Avrami index n, dimensionality of growth m and activation energy of crystallization Ec have been determined from different models.

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Kinetics of non-isothermal crystallization process and activation energy for crystal growth in amorphous materials

Cited by 132 publications

References 24 publications

Crystallization Kinetics of CaO-SiO<sub>2</sub>(CaO/SiO<sub>2</sub>=1)-TiO<sub>2</sub>-10 mass%B<sub>2</sub>O<sub>3</sub> Glassy Slag by Differential Thermal Analysis

Crystallization Kinetics of CaO-SiO<sub>2</sub>(CaO/SiO<sub>2</sub>=1)-TiO<sub>2</sub>-10 mass%B<sub>2</sub>O<sub>3</sub> Glassy Slag by Differential Thermal Analysis

Influence of Gd2O3 on thermal stability of oxyfluoride glasses

Kinetic Study of Non-Isothermal Crystallization in Se<sub>90-x</sub>Zn<sub>10</sub>Sb<sub>x</sub> (x = 0, 2, 4, 6) Chalcogenide Glasses

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Kinetics of non-isothermal crystallization process and activation energy for crystal growth in amorphous materials

Cited by 132 publications

References 24 publications

Crystallization Kinetics of CaO-SiO<sub>2</sub>(CaO/SiO<sub>2</sub>=1)-TiO<sub>2</sub>-10 mass%B<sub>2</sub>O<sub>3</sub> Glassy Slag by Differential Thermal Analysis

Crystallization Kinetics of CaO-SiO<sub>2</sub>(CaO/SiO<sub>2</sub>=1)-TiO<sub>2</sub>-10 mass%B<sub>2</sub>O<sub>3</sub> Glassy Slag by Differential Thermal Analysis

Influence of Gd2O3 on thermal stability of oxyfluoride glasses

Kinetic Study of Non-Isothermal Crystallization in Se&lt;sub&gt;90-x&lt;/sub&gt;Zn&lt;sub&gt;10&lt;/sub&gt;Sb&lt;sub&gt;x&lt;/sub&gt; (x = 0, 2, 4, 6) Chalcogenide Glasses

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Kinetic Study of Non-Isothermal Crystallization in Se<sub>90-x</sub>Zn<sub>10</sub>Sb<sub>x</sub> (x = 0, 2, 4, 6) Chalcogenide Glasses