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首页> 外文期刊>Physica, B. Condensed Matter >Hydrogen-induced resistance degradation in NiCuZn ferrites
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Hydrogen-induced resistance degradation in NiCuZn ferrites

机译：NiCuZn铁氧体中氢致电阻的退化

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摘要

Hydrogen-induced resistance degradation in Ni0.38Cu0.12Zn0.50Fe2O4 ceramic pellets was studied through an electrochemical hydrogen charging method, in which the silver electrodes of the pellets acted as a cathode in 0.01 M NaOH solution to evolve hydrogen by the electrolysis of water. The resistance of the pellets was decreased by several orders of maanitude and X-ray diffraction showed that no gross structure changes occurred in the lattice. The degradation could be mostly recovered through heat treatment in N-2. It was proposed that hydrogen generated by the electrolysis of water was incorporated into the ferrite lattice and reduced Fe3+ partially to Fe2+. The stability of hydrogen in ferrites decreased with increasing temperature and its outdiffusion resulted in recovery. Hydrogen-induced resistance degradation occurs in ferrites-based components in fabrication and in operation. (C) 2004 Elsevier B.V. All rights reserved.
机译：通过电化学氢充电方法研究了Ni0.38Cu0.12Zn0.50Fe2O4陶瓷球中氢致电阻的降解，其中球的银电极在0.01 M NaOH溶液中充当阴极，通过电解水放出氢。粒料的电阻降低了几个数量级，并且X射线衍射表明在晶格中没有发生总的结构变化。降解大部分可以通过在N-2中进行热处理来恢复。有人提出将水电解产生的氢结合到铁素体晶格中，并将Fe3 +部分还原为Fe2 +。铁氧体中氢的稳定性随温度升高而降低，其向外扩散导致回收。在制造和操作中，基于铁氧体的组件中会发生氢致电阻降级。 （C）2004 Elsevier B.V.保留所有权利。

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