Thermodynamic studies of the LaNi5-xSnx-H system from x=O to 0.5

被引：60

作者：

Luo, S ^{[1
]}

Luo, W ^{[1
]}

Clewley, JD ^{[1
]}

Flanagan, TB ^{[1
]}

Wade, LA ^{[1
]}

机构：

[1] CALTECH,JET PROP LAB,PASADENA,CA 91109

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1995年 / 231卷 / 1-2期

关键词：

LaNi5-xSnx-H system; intermetallic-hydrogen system; thermodynamics; gas solid system;

D O I：

10.1016/0925-8388(95)01871-9

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：

Hydrogen isotherms have been measured for the ternary intermetallic system LaNi5-xSnx-H with x = 0, 0.10, 0.20, 0.25, 0.32, 0.40 and 0.50 at a series of temperatures from 300 to 423 K. The plateau pressures decrease with increase in x. The magnitudes of the enthalpy for the plateau reaction, as determined from the van't Hoff plots, increase steadily with x while the corresponding entropies are nearly constant. Thus the observed decrease in the plateau pressures can be attributed to the changes in Delta H-plat with x. The extent of the two-phase plateau regions decrease with x and hysteresis also decreases, nearly vanishing at x = 0.5.

引用

页码：467 / 472

页数：6

共 15 条

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[2]

BOWMAN R, 1994, 8TH INT CRYOC C P

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