In this research, non-isothermal kinetic analysis of the oxidation process of Al–50Mg (wt%) powder mixture was performed by employing differential scanning calorimetry and thermogravimetry analysis techniques. The research findings revealed that oxidation of this powder mixture was completed at lower temperatures compared to that of pure aluminum powder; and furthermore, it enjoyed a higher thermal efficiency than that of pure magnesium powder. Oxidation of this mixture powder led to the formation of magnesium oxide (MgO) and spinel phase (MgAl₂O₄) during the first and second oxidation steps, respectively. Moreover, to calculate the activation energy (E) over a wide range of degree of conversion (α), two isoconversional methods, including Starink and Friedman methods were used. Activation energies decreased as the reaction progressed at both stages, indicating that these stages were multi-step reactions. Furthermore, the invariant kinetic parameter method and fitting model were used to determine the empirical kinetic triplets (i.e. E, pre-exponential factor (A) and reaction model (g(α))). The obtained results showed that the first stage was controlled by the second order Avrami-Erofeev mechanism (A₂), two-dimensional phase boundary reaction (R₂), and two-dimensional diffusion (D₂) models at heating rates of 5, 10, and 30 °C/min. The second stage was controlled by the third order Avrami-Erofeev mechanism (A₃) and A₂ at heating rates of 5 and 10 °C/min, while for a heating rate of 30 °C/min, the mechanism of reaction changes from A₃ to A₂.

在这项研究中，采用差示扫描量热法和热重分析技术对Al-50Mg（wt％）粉末混合物的氧化过程进行了非等温动力学分析。研究发现表明，与纯铝粉相比，该粉状混合物的氧化在较低的温度下完成。而且，它的热效率比纯镁粉高。该混合物粉末的氧化分别导致在第一和第二氧化步骤中形成氧化镁（MgO）和尖晶石相（MgAl ₂ O ₄）。此外，要在很宽的转化率范围内计算活化能（E）（α），使用了两种同转换方法，包括Starink和Friedman方法。随着反应在两个阶段的进行，活化能降低，表明这些阶段是多步反应。此外，使用不变动力学参数方法和拟合模型确定经验动力学三元组（即E，指数前因子（A）和反应模型（g（α）））。所得结果表明，第一阶段受二阶Avrami-Erofeev机理（A ₂），二维相边界反应（R ₂）和二维扩散（D _{2）控制。}）模型以5、10和30°C / min的加热速率进行加热。第二阶段由三级Avrami-Erofeev机理（A ₃）和A ₂在5和10°C / min的加热速率下控制，而在30°C / min的加热速率下，反应机理从A ₃至A ₂。