Results 161 to 170 of about 42,078 (227)

A model for non-isothermal crystallization kinetics

Journal of Non-Crystalline Solids, 1996
Abstract In the framework of a previously proposed Integral Equation formalism, an equation is derived for the kinetics of non-isothermal crystallization (devitrification). It is shown that the Kissinger multiple-scan thermal analysis technique, commonly used for the evaluation of activation energies, cannot be applied to all non-isothermal ...
V. Erukhimovitch, J. Baram
openaire   +1 more source

Non-isothermal crystallization kinetics of Y2Ti2O7

Powder Technology, 2017
Abstract The crystallization kinetics of Y 2 Ti 2 O 7 powders prepared by a Pechini-type polymerized complex route was studied using differential thermal analysis under non-isothermal conditions. Apparent activation energies of crystallization of 816 and 804 kJ mol − 1 were obtained from calculations based on the Arrhenius equation and ...
Milićević, Bojana R., Marinović-Cincović, Milena, Dramićanin, Miroslav   +2 more
openaire   +2 more sources

Kinetics of non-isothermal crystallization of polyethylene and polypropylene

Polymer, 1983
Abstract Differential scanning calorimetry (d.s.c.) data on non-isothermal crystallization of isotactic polypropylene and high-density polyethylene from the melt at different cooling rates were treated in terms of the Ozawa equation. It was found that the crystallization of polypropylene follows the Ozawa equation but in the case of polyethylene the ...
Marek Eder, Andrzej Wlochowicz
openaire   +1 more source

Non-isothermal crystallization kinetics in xanthan gum biopolymer

AIP Conference Proceedings, 2020
The Crystallization kinetics of Xanthan Gum Bio Polymer is studied by Differential Scanning Calorimetry (DSC) at different heating rates under non-isothermal conditions. The activation energy of crystallization (Ec) is evaluated, using different theoretical models (Starink, Ozawa, Matusita-Sakka, Piloyan and Coats and Redfern).
T. Lilly Shanker Rao, A. M. Shaker, T. Shanker Rao, K. Venkataraman   +3 more
openaire   +1 more source

Non-isothermal crystallization kinetics of As30Te60Ga10 glass

Applied Physics A, 2017
The crystallization study under non-isothermal conditions of As30Te60Ga10 glass was investigated. The studied composition was synthesized by melt-quenching technique and characterized by different techniques such as X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and differential scanning calorimetry (DSC).
Mansour Mohamed, Alaa M. Abd-Elnaiem, R. M. Hassan, M. A. Abdel-Rahim, M. M. Hafiz   +4 more
openaire   +1 more source

Influence of vanadium oxide on non-isothermal crystallization kinetics of zinc lithium borate glasses

, 2020
Glasses B2O3-Li2O-ZnO-V2O5 are investigated for their structural, thermal properties and non-isothermal crystallization kinetics. ZnO is systematically replaced with V2O5 in order to get insight on structural and thermal behavior of the glasses ...
S. S. Danewalia, K. Singh, S. Arya
semanticscholar   +1 more source

Non-isothermal crystallization kinetics of paraffin wax as a phase changing energy storage material

Physica Scripta, 2020
Paraffin waxes are becoming increasingly attractive especially on thermal energy storage field. The crystallization process, considered as a major thermal discharging approach, has a significant impact on the thermal performances of paraffin wax.
Amal Louanate, R. El Otmani, K. Kandoussi, M. Boutaous   +3 more
semanticscholar   +1 more source

Non-isothermal crystallization kinetics of a Fe–Cr–Mo–B–C amorphous powder

, 2020
Fe–Cr–Mo–B–C amorphous powders are usually used in thermal spraying, spark plasma sintering or 3D printing to prepare coatings or large-sized bulk amorphous alloys.
Q. Dong, P. Song, J. Tan, X. Qin, C.J. Li, P. Gao, Z.X. Feng, M. Călin, J. Eckert   +8 more
semanticscholar   +1 more source

Non-isothermal crystallization kinetics of FeZrB amorphous alloy

Thermochimica Acta, 2011
Abstract The non-isothermal crystallization kinetics of amorphous Fe 78 Zr 7 B 15 alloy is investigated to shed light on the crystallization mechanism. The crystallization of amorphous Fe 78 Zr 7 B 15 alloy exhibits two distinct steps. The apparent activation energy of the first ( E a 1 ) and second step crystallization ( E a 2 ) are determined
L.H. Kong, Y.L. Gao, T.T. Song, G. Wang, Q.J. Zhai   +4 more
openaire   +1 more source

The non-isothermal crystallization kinetics and mechanism of FeGaGeBCu alloy

Journal of Non-Crystalline Solids, 2022
Abstract In this paper, Fe76Ga5Ge5B13Cu1 ribbon was prepared by melt spinning method and its thermal stability and non-isothermal crystallization kinetics were analyzed. It is found that the primary crystallization phase is α-Fe(Ga,Ge), following by the precipitation of Fe-B compounds.
Lu Guo, Qianke Zhu, Zhe Chen, Kewei Zhang, Yong Jiang   +4 more
openaire   +1 more source