...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Determination of hydrogen diffusion and permeation coefficients in pure copper at near room temperature by means of tritium tracer techniques
【24h】

Determination of hydrogen diffusion and permeation coefficients in pure copper at near room temperature by means of tritium tracer techniques

机译：t示踪技术测定纯铜在室温附近的氢扩散系数和渗透系数

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Copper (Cu) and its alloys are candidate materials for heat sinks or cooling-tubes in a fusion reactor. Hence their tritium retention and permeation are very important safety concerns. Most data for diffusion and permeation of hydrogen in Cu so far available have been limited for rather higher temperatures and data for lower temperatures, in particular, for near room temperature (RT) are scarce. We have applied a tritium tracer technique for gaseous hydrogen permeation in pure Cu at near RT and succeeded to get reliable data for hydrogen permeation coefficients given by Φ = (2.8 ± 0.4) × 10~(-6) exp(-85 ± 2(kJ/mol)/ RT), mol ,m~(-1) s~(-1) Pa~(-1/2), which is reliable in very wide temperature range from 300 K to 1000 K.However, diffusion coefficients determined by the time-lag method are bending downward from the extrapolation of higher temperature data and are influenced by initial surface contamination which is removed by hydrogen loading.
机译：铜（Cu）及其合金是聚变反应堆中散热器或冷却管的候选材料。因此，their的保留和渗透是非常重要的安全问题。迄今为止，大多数有关氢在铜中扩散和渗透的数据都受到较高温度的限制，而有关较低温度（尤其是接近室温）的数据却很少。我们已采用trace示踪技术对纯铜在近室温下的气态氢渗透进行了研究，并成功获得了由Φ=（2.8±0.4）×10〜（-6）exp（-85±2（ （kJ / mol）/ RT），mol，m〜（-1）s〜（-1）Pa〜（-1/2），在300 K至1000 K的很宽的温度范围内都是可靠的。通过时滞方法确定的结果是从较高温度数据的推算中向下弯曲，并受到初始表面污染的影响，该污染通过氢负荷去除。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号