研究論文
希土類金属（La，Ce，Tb，Dy）表面の水素反応特性に及ぼす酸化の影響
2000 年 25 巻 1 号 p. 46-48
詳細
2000 年 25 巻 1 号 p. 46-48
The reaction probability, r, of H2 with the surface of rare earths (La, Ce, Tb, Dy) was measured by a volumetric method at 298K under ultra high vacuum condition. Initially, the surfaces of these metals exhibited the highest value, r=1. With increasing amount of hydrogen adsorbed and/or absorbed, r was decreased and then exhibited plateaux at r=10-1-10-2 where the two phases of H solid solutions and d.ihydride may coexist. Thereafter, r sharply dropped for each system. The Ce surface with the O2 preadsorption layers exhibited the highest H2 reactivity among those of the rare earths samples.
