氦屏蔽效应的实验与分析  

The experiments and analyses of helium blanketing effect

作　　者：张强基[1] 张海涛[1] 陆明[1] 周德惠[2] 杨勋[2] 廖彬[2] 周燕良[2] 

机构地区：[1]复旦大学,上海200433 [2]中国工程物理研究院,成都610003

出　　处：《核技术》2000年第9期626-631,共6页Nuclear Techniques

基　　金：中国工程物理研究院科学基金!(970317)

摘　　要：为了解氢屏蔽效应的机理，进行了储氢材料的表面分析工作．结果表明，Ａｒ－与储氢材料间没有可察觉的电相互作用。提出了一个将吸氢过程分为整体流和扩散流两阶段的模型。用以描述整个吸氢过程．该模型能够解释吸氢全过程。The 'helium blanketing effect (HBE)' which is a common phenomenon observed in the adsorption of Tritium by hydrogen storage materials, such as LaNi5 xAlx, has been investigated. By the experiment of hydrogen absorption the 'bulk flow' model proposed by Ortman was verified. In order to know the mechanism of HBE surface analyses were performed. The results indicate that there is no measurable electronic interaction between the Ar+ and the hydrogen storage materials. A two-step model, bulk flow and diffusion flow, of hydrogen absorption has been proposed by the authors to describe the whole absorption process. The experimental data can be fitted and explained by this model successfully.

关 键 词：储氢材料 氦屏蔽效应 整体流 扩散流 吸氢过程 

分 类 号：TG139.7[一般工业技术—材料科学与工程] O552.32[金属学及工艺—合金]