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KINETIC STUDY OF SOLID-STATE PROCESSES

机译:固态过程的动力学研究

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摘要

A simple method for kinetic analysis of solid-state processes has been developed and the criteria capable of classifying different processes are explored. They provide a useful tool for the determination of the most suitable kinetic model. The method has been applied to the analysis of calorimetric data corresponding to the crystallization processes in amorphous ZrO_2. It is found that the crystallization kinetics of amorphous powder sample exhibits a complex behavior under non-isothermal conditions. A two-parameter model provides a satisfactory description of the crystallization process for isothermal and non-isothermal conditions. This enables better control of crystallization extent in fine ZrO_2 powders that is important for preparation of zirconia ceramics with defined properties.
机译:已经开发了一种简单的固态过程动力学分析方法,并探索了能够对不同过程进行分类的标准。它们为确定最合适的动力学模型提供了有用的工具。该方法已应用于分析非晶态ZrO_2中结晶过程的量热数据。发现无定形粉末样品的结晶动力学在非等温条件下表现出复杂的行为。两参数模型为等温和非等温条件下的结晶过程提供了令人满意的描述。这样可以更好地控制ZrO_2细粉中的结晶程度,这对于制备具有确定性能的氧化锆陶瓷很重要。

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