Journal ArticleDOI
On the calculation of activation energies using a modified Kissinger method
TLDR
In this article, it was shown that the proposed method was based upon a modification to the equation for the rate of reaction under non-isothermal conditions, and the apparent discrepancy between the proposed algorithm and the original Kissinger method was resolved.Abstract:
Augis and Bennett (J. Thermal Anal. 13 (1978) 283.) [6] recently proposed a modified Kissinger method for determining the activation energy of a transformation. It is shown that the proposed method was, in fact, based upon a modification to the equation for the rate of reaction under non-isothermal conditions. The apparent discrepancy between the proposed method and the original Kissinger method is therefore resolved. The modified rate equation appears to have, at best, only a limited application. However, if the equation should be appropriate for a particular transformation, it is demonstrated that Augis and Bennett's method would be the correct method for determining the activation energy.read more
Citations
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Journal ArticleDOI
The determination of activation energy from linear heating rate experiments: a comparison of the accuracy of isoconversion methods
TL;DR: In this article, a classification of model-free isoconversion methods for the calculation of activation energies of thermally activated reactions is proposed, by deriving expressions for the main sources of error which includes the inaccuracy in reaction rate measurement, approximations for the temperature integral and inaccuracies in determination of temperature for equivalent fraction transformed.
Journal ArticleDOI
Applications of thermoanalytical techniques to the study of crystallization kinetics in glass-forming liquids, part I: Theory☆
H. Yinnon,Donald R. Uhlmann +1 more
TL;DR: In this article, a critical review is presented of mathematical methods advanced over the last 20 years for the analysis of data obtained from non-isothermal thermoanalytical studies of crystallization of glass-forming liquids.
Journal ArticleDOI
Amorphization by ball milling. A review
Arthur Weeber,Hans Bakker +1 more
TL;DR: In this paper, a new method for the preparation of amorphous alloys is the mechanical alloying process, and criteria for amorphization and a method to determine the glass forming range of TM-TM systems are given.
Journal ArticleDOI
The synthesis of amorphous NiTi alloy powders by mechanical alloying
R.B Schwarz,R.R Petrich,C.K Saw +2 more
TL;DR: In this article, high-energy ball milling was used to alloy polycrystalline powders of Ni and Ti in an inert atmosphere at T < 240 K. The alloyed NixTi1−x powders were characterized by scanning electron microscopy, X-ray diffraction, and differential scanning calorimetry.
Journal ArticleDOI
Homer Kissinger and the Kissinger equation
TL;DR: The peak displacement kinetic method was invented by Henry Kissinger in the mid-1950s when he was an intern at the National Bureau of Standards as discussed by the authors, and it is one of the most commonly used kinetic tools, having more than 2000 citations.
References
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Journal ArticleDOI
Variation of Peak Temperature With Heating Rate in Differential Thermal Analysis
TL;DR: In this article, the temperature at which the maximum deflection is observed varies with heating rate for certain types of reactions, and an expression can be derived relating this variation with the kinetics of the reaction.
Journal ArticleDOI
Kinetic analysis of derivative curves in thermal analysis
TL;DR: In this article, two methods of obtaining kinetic parameters from derivative thermoanalytical curves are proposed based on the general form of kinetic formulae and are applicable to general types of reactions governed by a single activation energy.
Journal ArticleDOI
Calculation of the Avrami parameters for heterogeneous solid state reactions using a modification of the Kissinger method
J. A. Augis,J. E. Bennett +1 more
TL;DR: In this article, an extension of the Kissinger method was proposed for the analysis of the transformation kinetics of the metastable equiatomic tin-nickel alloy with differential thermal analysis (DTA).
Journal ArticleDOI
The Application of Differential Thermal Analysis to the Study of Reaction Kinetics1
Journal ArticleDOI
Thermal analysis of non-isothermal crystallization kinetics in glass forming liquids
TL;DR: A review of previously suggested methods for analysis of experimental data of non-isothermal crystallization kinetics based on the Johnson-Mehl-Avrami transformation rate equation is given in this paper.