HYDROGEN EMISSION CHARACTERISTICS OF Zr0.9Ti0.1Cr0.6Fe1.4 ALLOY UNDER DIFFERENT TEMPERATURE AND LOADING CONDITIONS

The hydrogen emission characteristics of a hydrogen storage alloy operating system employing the Zr[Formula: see text]Ti[Formula: see text]Cr[Formula: see text]Fe[Formula: see text] alloy were analyzed under different temperatures and loading conditions for application in a rehabilitation system for motion assistance for the aged and disabled. After activating 8.56[Formula: see text]g of a Zr[Formula: see text]Ti[Formula: see text]Cr[Formula: see text]Fe[Formula: see text] alloy under a 5.5[Formula: see text]MPa hydrogen atmosphere, operation tests were conducted in the temperature range of 25–80∘C under the loading conditions of 5–45[Formula: see text]kg. The lightest load of 5[Formula: see text]kg was lifted by 150[Formula: see text]mm when the system was heated from the initial test temperature of 25–80∘C and a 40[Formula: see text]kg load was lifted by 12.5[Formula: see text]mm at 80∘C, while a 45[Formula: see text]kg load could not be lifted under any of the temperature conditions. The hydrogen storage alloy operating system developed in this study is expected to be useful in motion assistance for the socially underprivileged, as a rehabilitation tool for the hand, wrist, and elbow, as supplementary equipment, and in rehabilitation systems for daily life.