摘要
研究了用部分Ca取代LPC(LPC为无钕镧镨铈混合稀土金属),同时用部分Ni取代Mg的(LPCCa)2(MgNi)17合金的吸放氢性能。比较了不同温度下,不同成分配比对合金贮氢性能的影响。其中,(LPC)1.9Ca0.1Mg15Ni2合金具有相对较低的放氢温度和较大的放氢量,在275℃的放氢量达3.43%(质量分数)。分析了(LPC)1.9Ca0.1Mg15Ni2的微观结构,同时对合金放氢温度降低的原因进行了讨论。
The absorption and desorption kinetics of （LPCCa）2（MgNi）I7 alloys, in which Ca substituted for LPC and Ni substituted for Mg, was investigated, LPC represents for Nd-free La-Ce-Pr mischmetal after the extraction of the most Ce and Nd content. In this work, the influence of different components and temperatures on the absorption and desorption capacities was analyzed. （LPC）1.9Ca0.1Mg15Ni2 shows low-temperature and high capacity of desportion, For example, the amount of hydrogen desorption at 275 ℃ is 3.43wt%. The microstructure of this alloy was analyzed and the reason of the desorption properties at low-temperature was discussed.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2005年第10期1582-1584,共3页
Rare Metal Materials and Engineering
基金
四川省科技厅攻关项目
关键词
Mg基贮氢合金
吸放氧性能
微观结构
Mg-based hydrogen storage alloy
absorption-desorption kinetics
microstructure
