| 铸态及快淬态La2 Mg(Ni0.85Co0.15)9B0.1贮氢合金 |
| |
| 引用本文： | 董小平,张羊换,王国清,郭世海,王新林.铸态及快淬态La2 Mg(Ni0.85Co0.15)9B0.1贮氢合金[J].电池,2004,34(5):316-318. |
| |
| 作者姓名： | 董小平 张羊换 王国清 郭世海 王新林 |
| |
| 作者单位： | 1. 内蒙古科技大学材料科学与工程学院,内蒙古,包头,014010;钢铁研究总院功能材料研究所,北京,100081
2. 钢铁研究总院功能材料研究所,北京,100081 |
| |
| 基金项目： | 国家自然科学基金，国家自然科学基金 |
| |
| 摘 要： | 铸态及快淬态La2Mg(Ni0.85Co0.15)9B0.1贮氢合金主要由(La,Mg)Ni3相(PuNi3型结构)、LaNi5相及少量LaNi2相组成,铸态合金还含有微量的Ni2B相.用高于15 m/s的淬速快淬后,Ni2B相几乎消失,各相的含量与快淬淬速有关.与铸态合金相比,快淬态合金放电平台电压降低,但随着淬速提高,放电容量、放电平台电压都存在一个最大值;快淬使合金的循环寿命有不同程度的提高.铸态和快淬态合金均具有良好的活化性能.
|
| 关 键 词： | 贮氢合金 快淬工艺 微观结构 电化学性能 |
| 文章编号： | 1001-1579(2004)05-0316-03 |
| 修稿时间： | 2003年12月10 |
La2Mg(Ni0.85Co0.15)9B0.1 hydrogen storage alloys prepared by casting and rapid quenching |
| |
| DONG Xiao-ping.La2Mg(Ni0.85Co0.15)9B0.1 hydrogen storage alloys prepared by casting and rapid quenching[J].Battery Bimonthly,2004,34(5):316-318. |
| |
| Authors: | DONG Xiao-ping |
| |
| Affiliation: | DONG Xiao-ping~ |
| |
| Abstract: | The La_2Mg(Ni_(0.85)Co_(0.15))_9B_(0.1) hydrogen storage alloys prepared by casting and rapid quenching were consisted of (La,Mg)Ni_3 phase (PuNi_3-type structure), LaNi_5 phase and a little of LaNi_2 phase, the as-cast alloys contained a trace of Ni_2B phase. When the quenching rate was higher than 15 m/s, the Ni_2B phase in the alloys nearly disappeared, the relative amount of each phase in the alloys depended on the quenching rate. Contrasted with the as-cast alloys, discharge plateau voltage decreased in the as-quenched alloys, but the discharge capacity and discharge plateau voltage had a maximum value when varying the quenching rate. The cycle lives of the as-quenched alloys increased with the increase of quenching rate. The as-cast and as-quenched alloys had an excellent activation performance. |
| |
| Keywords: | hydrogen storage alloys rapid quenching technique microstructure electrochemical properties |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
