MODIFICATIONS NEAR THE SURFACE OWING TO HYDROGEN CYCLING OF THE INTERMETALLICS LANI5 AND LANI5-XALX

被引:28
作者
BONNET, JE [1 ]
DANTZER, P [1 ]
DEXPERT, H [1 ]
ESTEVA, JM [1 ]
KARNATAK, R [1 ]
机构
[1] UNIV PARIS 11,CNRS,UNITE 446,F-91405 ORSAY,FRANCE
来源
JOURNAL OF THE LESS-COMMON METALS | 1987年 / 130卷
关键词
CHEMICAL SHIFTS - HYDRIDES - SEGREGATION EFFECTS;
D O I
10.1016/0022-5088(87)90146-9
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The LaNi//5-LaNi//4//. //7//7Al//0//. //2//2 pair of alloys has been selected to stimulate a cycling procedure, as may be encountered in chemical thermal engines working with hydrides. After 1250 cycles the samples have been studied by yield photoelectron spectroscopy and extended X-ray absorption fine structure (EXAFS) technique. The results, recorded at room temperature near the lanthanum and nickel thresholds, are issued from samples which were cycled in a closed system. Little or no degradation is obtained depending on the intermetallic alloy.
引用
收藏
页码:491 / 495
页数:5
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