Theoretical study on the mechanism and transformation kinetics under non-isothermal conditions. Application to the crystallization of Sb0.12As0.36Se0.52 glassy alloy

Two decoupling methods for non-isothermal DSC results of AIBN decomposition

“…Malek method, which almost has no assumptions and approximations, can significantly reduce the scope of kinetic mechanism functions and improve the accuracy of the mechanism function (f(˛) as a differential form or G(˛) as an integral form) determination [19][20][21][22][23]. Malek method was used, herein, to explore the most probable mechanism model for the thermal decomposition of AIBN based on DSC data.…”

A study on the non-isothermal transformation kinetics of glassy alloys when the nucleation frequency and crystal growth rate depend on time as a power law

“…(8), considering that in this type of series the error produced is less than the first term neglected and bearing in mind that in most glass-crystal transformations y = E G /RT 1, usually E G /RT ≥ 25 [28], it is possible to use only the first term of the above-mentioned series, without making any appreciable error, and the integral I 1 can be written as…”

“…There are two thermal analysis regimes: one is the isothermal regime [4][5][6][7], in which glass samples are quickly heated up and held at a temperature above glass transition temperature, and the other is so-called non-isothermal regime [8][9][10][11][12], in which glass samples are heated up at a fixed heating rate. In general, an isothermal experiment takes longer times than a non-isothermal experiment, but isothermal experimental data can be interpreted by the well-established Johnson-Mehl-Avrami kinetic equation [13][14][15][16].…”

“…The study of crystallization kinetics in amorphous materials by means of differential scanning calorimetry methods have been widely discussed in the literature [6][7][8][9][10][11][12][13][14][15][16][17][18]. There is a large variety of theoretical models and theoretical functions proposed to explain the crystallization kinetics.…”

Researches on Thermal Decomposition Kinetics of Composite Modified Double‐base Propellants

“…T eo , T i , T p , T f , T b , T a , E, lg A and ∆H are very important parameters in determining the stability of propellants. [1][2][3][4][5][6][7][8][9][10] In order to explore the thermal decomposition mechanisms of composite modified double-base propellant and obtain kinetic parameters, such as apparent activation energy (E), the isoconversional methods [11][12][13][14] and the Malek method [15][16][17][18] were employed according to suggestions of ICTAC (International Confederation of Thermal Analysis and Calorimetry). 19,20 The supposition of decomposition mechanism function is not needed for Flynn-Wall-Ozawa method and the computation is simpler than other methods.…”