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首页> 外文期刊>Journal of Nuclear Materials: Materials Aspects of Fission and Fusion >Influence of protecting gel film on oxidation of zirconium alloys
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Influence of protecting gel film on oxidation of zirconium alloys

机译：保护膜对锆合金氧化的影响

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摘要

Thin oxide layers of Zr1Nb and Zry-4S on tubes, used for fuel cladding in light water reactors, which had been protected by thin gel films, were compared with oxide layers on unprotected specimens of the same kind, grown together in two batches in water at 360 degrees C for 21 and 42 days, respectively. The analysis of the I-V characteristics at constant temperatures up to 180 degrees C showed a strong decreasing resistivity with oxidation time of the gel-protected layers of the Zry-4S specimens, with indication of an energy dependent trap distribution, although the gel and the oxide alone showed evidence of single, but different, energy traps. The changes are believed to be due to diffusion of different trap centers in both directions. The Zr1Nb specimens retained their single energy trap behaviour also in the combination with the protecting gel film and resistivity dropping with increasing oxidation time. (c) 2006 Elsevier B.V. All rights reserved.
机译：比较了用薄凝胶膜保护的用于轻水反应堆燃料包壳的管子上Zr1Nb和Zry-4S的薄氧化物层与未经保护的相同样品的氧化物层的比较，该样品在水中分两批一起生长在360摄氏度下分别停留21天和42天。在高达180摄氏度的恒定温度下对IV特性进行的分析显示，随着Zry-4S样品的凝胶保护层氧化时间的延长，电阻率会随着时间的推移而大幅降低，这表明了能量依赖的陷阱分布，尽管凝胶和氧化物单独显示了单个但不同的能量陷阱的证据。认为该变化是由于不同陷阱中心在两个方向上的扩散所致。 Zr1Nb样品在与保护性凝胶膜结合使用时仍保留了其单一的能量陷阱行为，并且随着氧化时间的增加，电阻率下降。 （c）2006 Elsevier B.V.保留所有权利。

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