An investigation of Ca-based hydride electrode materials

作者：Li ZP^*; Matsuoka T; Suda S

来源：Vacuum, 1996, 47(6-8): 893-897.

DOI：10.1016/0042-207X(96)00089-9

• Ca-based alloy
• durability
• hydride electrode
• metallographic structure
• Zr/Ti added alloy

The effects of La-substitution for Ca in Ca1-xLaxNi4.7Al0.3 on metallography, structure and electrochemical properties have been investigated. It was found that Ca and Al segregated over the grain boundaries of the alloys. Based on La substituted CaNi5-type alloys, we studied the Zr and Ti addition effects as well. It was found that Zr-Ni phases or Ti-Ni phases deposited on the boundaries of AB(5) phase improved the anticorrosion property of the alloys. Annealing improves the electrochemical durability of the Ca1-xLaxNi4.7Al0.3 alloys by reducing A(2)B(7) phase and Ca segregation on the grain boundary.

• 出版日期1996-8