Effect of partial substitution of nickel for copper on LaNi5 activation

被引：2

作者：

Veremeeva, O. A.

Yakovleva, N. A.

Klyamkin, S. N.

Berdonosova, E. A.

Shelekhov, E. V.

机构：

[1] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119992, Russia

[2] Moscow State Univ Steel & Alloys, Moscow 109049, Russia

来源：

RUSSIAN CHEMICAL BULLETIN | 2006年 / 55卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

intermetallic compounds; hydrides; activation; hysteresis; powder X-ray diffraction; microstrains; calorimetry;

D O I：

10.1007/s11172-006-0360-6

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

d The first cycles of hydrogen absorption-desorption in LaNi5-H-2 and LaNi4.5Cu0.5-H-2 systems were studied using Tian-Calvet differential heat-conduction microcalorimetry, volumetric measurements, and powder X-ray diffraction. The diffraction profiles were analyzed, and the microstructure characteristics of the LaNi5 and LaNi4.5CU0.5 systems at different stages of activation were determined. The pressure-composition isotherms were plotted, and the enthalpies of phase transitions alpha ->beta and beta ->alpha were calculated. The effect of substitution on the change in the thermodynamic parameters and microstructure characteristics of the hydride-forming inter-metallic compounds during activation was shown.

引用

页码：949 / 954

页数：6

共 17 条

[1] EVOLUTION OF THE KINETIC-PROPERTIES IN A FAMILY OF SUBSTITUTED LANI5 HYDRIDES DURING ACTIVATING FORMATION-DECOMPOSITION CYCLING [J].