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Non-isothermal kinetic study on the decomposition of Zn acetate-based Sol-gel precursor - Part 1. Application of the isoconversional methods

机译:醋酸锌基溶胶-凝胶前体分解的非等温动力学研究-第1部分。等转化法的应用

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摘要

The isoconversional methods (Friedman (FR), Flynn-Wall-Ozawa (FWO) and Kissinger-Akahira-Sunose (KAS)) were applied for evaluating the dependencies of the activation energy (E) on the mass loss (Delta m) corresponding to the non-isothermal decomposition of two Zn acetate-based gel precursors for ZnO thin films whose preparation differs by the drying temperature of the liquid sol-precursor (125 degrees C for sample A, and 150 degrees C for sample B). Although both investigated samples exhibit similar decomposition steps, strong differences between E vs. Delta m curves as well as among the characteristic parameters of the decomposition steps, directly evaluated from TG, DTG and DTA curves, were put in evidence.
机译:采用等转化方法(Friedman(FR),Flynn-Wall-Ozawa(FWO)和Kissinger-Akahira-Sunose(KAS))评估活化能(E)对对应于质量损失(Delta m)的依赖性ZnO薄膜的两种基于乙酸锌的凝胶前体的非等温分解,其制备因液体溶胶前体的干燥温度而不同(样品A为125℃,样品B为150℃)。尽管两个研究样品均显示出相似的分解步骤,但仍可以从TG,DTG和DTA曲线直接评估得出E与Delta m曲线之间以及分解步骤的特征参数之间的巨大差异。

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