Cinética não-isotérmica na análise térmica de sólidos

Química Nova

André Silva Pimentel¹  Graciela Arbilla¹ 

[1] ,Universidade Federal do Rio de Janeiro Instituto de Química Departamento de Físico-QuímicaRio de Janeiro RJ

关键词: thermal analysis;    solids;    non-isothermal kinetics;   

DOI  :  10.1590/S0100-40421998000300005

来源: SciELO

【 摘 要 】

In this work, a computer program called Thermal Kinetics was implemented to simulate thermal analysis experiments by numerical integration of the kinetics equations. The computer program was tested in two different examples: non-isothermal transformation of a Cu-Al alloy and non-isothermal decomposition of calcium oxalate monohydrated. In spite of the rather crude approximations of the model, the simulated profiles are very similar to the experimental curves. Both, the dalpha /dt and the dalpha /dT profiles reproduce the experimental transition temperatures with an error smaller than 25%.

【 授权许可】

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