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CHRONOAMPEROMETRY FOR THE DETERMINATION OF METALLIC INTERDIFFUSION COEFFICIENTS - RAPID TRANSPORT PROCESSES IN THE FIRST ATOMIC LAYERS

机译:计时光度法测定金属互扩散系数-第一原子层中的快速传输过程。

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摘要

The potential step technique was used to study the interdiffusion in the solid state at high temperature using a molten electrolyte. The method was applied to several binary metal systems and proved to be efficient for the determination of the interdiffusion coefficient D as a function of the temperature and composition of the generated alloys. The electrochemical response at short times showed a net departure from the usual diffusion laws and could be interpreted in terms of a very fast transport in the initial layers of the metal interface. Analysis of the transients was carried out by digital simulation in order to take into account the dependence of D on the concentration and distance. [References: 15]
机译:电位阶跃技术用于研究在高温下使用熔融电解质的固态相互扩散。该方法已应用于几种二元金属系统,并被证明对于确定互扩散系数D是温度和所生成合金成分的函数是有效的。短时间的电化学反应显示出与常规扩散定律的净偏离,可以用在金属界面初始层中非常快速的传输来解释。通过数字仿真对瞬态进行分析,以考虑D对浓度和距离的依赖性。 [参考:15]

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