Crystallization kinetic studies on Bi1.75Pb0.25Sr2Ca2Cu3-xSnxOδ glass-ceramic by using non-isothermal technique

Arslan, Abdussamet; Koralay, Haluk; Çavdar, Şükrü; Günen, Ali

doi:10.1016/j.jnoncrysol.2012.02.016

Cited by 9 publications

(7 citation statements)

References 35 publications

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“…[20][21][22][23] A. Arslan et al studied the crystallization kinetics of the BSCCO ceramics using Sn substitution for Cu sites by the non-isothermal DTA method and found that the change in the Avrami parameter, n, decreased as the level of doping increased, whereas the activation energy, E, was calculated by the Kissinger method. 24 O. Ozturk et al studied the nucleation and crystallization kinetics of the BSCCO glass-ceramic material, where Bi was partially replaced by Ru. 25 BSCCO superconductors in these studies were prepared by the solid-state reaction and melt quenching methods, which have the disadvantages of a long time, high temperature and high energy consumption.…”

Section: Introductionmentioning

confidence: 99%

Superconducting properties and non-isothermal crystallization kinetics of a Bi₂Sr₂CaCu₂O_8+δ (Bi2212) superconductor prepared by the Pechini sol–gel method

et al. 2019

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Section: Introductionmentioning

confidence: 99%

Superconducting properties and non-isothermal crystallization kinetics of a Bi₂Sr₂CaCu₂O_8+δ (Bi2212) superconductor prepared by the Pechini sol–gel method

et al. 2019

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“…Here, C is a numerical constant; X is the transformation percentage of rutile phase, %; T 0 is the temperature of rutile phase starting to precipitate in slag, K; E is the activation energy for crystal growth, J/mol; n is a constant. It can be simplified into the following formula which is called the JMAK equation: − X = f ( α , T ) f ( 0 , T ) = 1 − exp ( − c a n ) …”

Section: Resultsmentioning

confidence: 99%

Crystallization and Coarsening Kinetics of Rutile Phase in Modified Ti-Bearing Blast Furnace Slag

Wu¹,

Li²,

Zhang³

et al. 2012

Ind. Eng. Chem. Res.

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Crystallization and coarsening kinetics of nonisothermal precipitation process of rutile in modified Ti-bearing blast furnace slag were discussed. The modified slag was analyzed by X-ray diffraction (XRD) and scanning electron microscope (SEM) and EDX. The experimental results showed that the cooling rate has an important effect on precipitation of the rutile phase. Low cooling rate is in favor of the increase in the volume fraction of rutile phase in Ti-bearing blast furnace slag and the growth of rutile phase. The volume fraction of rutile phase was approximately described by JMAK equation. The experiential expression of average crystal radius for rutile phase was also obtained.

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“…Diğer taraftan, A örneğine göre C ve D örneklerinin enerji değerlerinde düşüş yaşanmıştır. Buradan da C ve D örneklerinin A ve B'ye göre termal olarak daha kararsız yapıda olduğu ve kristalleşme için daha az enerjiye ihtiyaç duyacağı sonucu çıkarılabilir [23,24].…”

Section: şEkil 5 Ozawa Yöntemine Göre a öRneği Için Ln(-ln(1-))-lnβ ...unclassified

Investigation of Thermal Properties of Bi1,8-xGaxPb0,2Sr2CaCu2Oy Glass Ceramics

Çavdar

BULUT

İZMİRLİ

et al. 2022

Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım Ve Teknoloji

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This article presents the variation in the thermal properties of Bi-Ga partial substitution in Bi1,8-xGaxPb0,2Sr2CaCu2Oy (BSCCO) glass ceramic structures. The experimental steps of BSCCO glass ceramic samples are specified. The samples were produced with Bi-Ga partial substitution at different ratio using the melt casting method. Thermal properties were analyzed using the differential thermal analysis (DTA) method. The mass gain in the samples was investigated by the thermogravimetric analysis (TGA) method.. Figure 1 Schematic representation of experimental processes of Bi1,8-xGaxPb0,2Sr2CaCu2Oy samplesPurpose: The aim is to examine the effect of Bi-Ga partial substitution on the thermal properties of the BSCCO glass ceramic structure.Theory and Methods: First, the heat treatment stage of the powder samples was specified. Then, the process of transforming the molten material into glass was performed (Figure 1). Finally, the effect of partial substitution ratio of Ga in the Bi1,8-xGaxPb0,2Sr2CaCu2Oy on thermal properties using DTA and TGA measurements. Results:In the DTA curves of all samples, it is seen that as the heating rate is increased, it shifts to the high temperature regions at the glass transition temperature and crystallization temperature. Avrami parameters were calculated for each sample using the crystallization peaks in the DTA curves. The Avrami parameters of samples were calculated as 3,45; 2,82; 2,25 and 2,58 for A, B, C and D respectively. Compared to the A, the activation energy of the B increased by 1-2 kJ/mol, but this energy level started to decrease as the substitution ratio increased. When the graphs are examined for all samples, it is seen that the crystallization rate increases with the increase in the substitution ratio. Conclusion:Since the required energy range for crystallization will be lower at low temperatures, there will be sufficient time for nucleation. However, as the higher heating rates are increased,

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Crystallization kinetic studies on Bi1.75Pb0.25Sr2Ca2Cu3-xSnxOδ glass-ceramic by using non-isothermal technique

Cited by 9 publications

References 35 publications

Superconducting properties and non-isothermal crystallization kinetics of a Bi₂Sr₂CaCu₂O_8+δ (Bi2212) superconductor prepared by the Pechini sol–gel method

Superconducting properties and non-isothermal crystallization kinetics of a Bi₂Sr₂CaCu₂O_8+δ (Bi2212) superconductor prepared by the Pechini sol–gel method

Crystallization and Coarsening Kinetics of Rutile Phase in Modified Ti-Bearing Blast Furnace Slag

Investigation of Thermal Properties of Bi1,8-xGaxPb0,2Sr2CaCu2Oy Glass Ceramics

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Crystallization kinetic studies on Bi1.75Pb0.25Sr2Ca2Cu3-xSnxOδ glass-ceramic by using non-isothermal technique

Cited by 9 publications

References 35 publications

Superconducting properties and non-isothermal crystallization kinetics of a Bi2Sr2CaCu2O8+δ (Bi2212) superconductor prepared by the Pechini sol–gel method

Superconducting properties and non-isothermal crystallization kinetics of a Bi2Sr2CaCu2O8+δ (Bi2212) superconductor prepared by the Pechini sol–gel method

Crystallization and Coarsening Kinetics of Rutile Phase in Modified Ti-Bearing Blast Furnace Slag

Investigation of Thermal Properties of Bi1,8-xGaxPb0,2Sr2CaCu2Oy Glass Ceramics

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Superconducting properties and non-isothermal crystallization kinetics of a Bi₂Sr₂CaCu₂O_8+δ (Bi2212) superconductor prepared by the Pechini sol–gel method

Superconducting properties and non-isothermal crystallization kinetics of a Bi₂Sr₂CaCu₂O_8+δ (Bi2212) superconductor prepared by the Pechini sol–gel method