Effects of Surface Oxide Layer and Metalloid Elements on the Hydrogen Absorption and Desorption Characteristics of Amorphous Ti-Ni and Zr-Ni Alloys

概要

論文の詳細を見る
Effects of surface oxide layer and metalloid elements on the hydrogen absorption and desorption characteristics of amorphous Ti_<67>Ni_<33> and Zr_<50>Ni_<50> alloys were investigated by a volumetric method and AES. Both hydrogen absorption characteristics and surface condition of amorphous alloys depended sensitively on the atmosphere exposed during rapid quenching. The amorphous Ti_<67>Ni_<33> alloy prepared in air hardly absorbed hydrogen due to the formation of a thick oxide layer on the surface. This result suggested that one should take the effect of the atmosphere into account for understanding the hydrogen absorption and desorption characteristics of amorphous alloys. Furthermore, it became clear that the addition of metalloid elements to the metal-metal type amorphous alloys was deleterious for hydrogen absorption, because small holes in the amorphous structure which were to be preferential sites of hydrogen atoms were probably occupied by metalloid elements.
東北大学の論文