| Title |
The Effects of Oxygen Concentration on the Hydrogen Absorption Properties of the Zr57V36Fe7 Getter Alloy |
| Authors |
박제신(Je Shin Park); 우샛별(Saet Byul Woo); 서창열(Chang Youl Suh); 박미영(Mi Young Park); 심건주(Gun Choo Shim); 김원백(Won Baek Kim) |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
Non-Evaporation Getter; NEG; Hydrogen sorption speed; Activation; Oxidation |
| Abstract |
The effects of the oxygen concentration on the hydrogen sorption properties of an NEG(non-evaporable getter) alloy, Zr(57)V(36)Fe7, were investigated. The desired level of the oxygen concentration was obtained by letting an argon gas with 2.98 vol% O2 flow through a tube furnace containing the alloy powder at 423 K for a predetermined time period. The sorption speed of the alloy decreased almost linearly with the increase of the oxygen concentration. The reason for this can be explained as follows: the activated metal surface area decreases with the increase of the oxygen concentration and the activation of the metal surface covered with oxygen requires more energy to remove it. |