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Vol.44, No.5, 344 ~ 350, 2006
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| Title |
| The Effects of Oxygen Concentration on the Hydrogen Absorption Properties of the Zr57V36Fe7 Getter Alloy |
| 박제신 Je Shin Park , 우샛별 Saet Byul Woo , 서창열 Chang Youl Suh , 박미영 Mi Young Park , 심건주 Gun Choo Shim , 김원백 Won Baek Kim |
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| 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. |
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| Key Words |
| Non-Evaporation Getter, NEG, Hydrogen sorption speed, Activation, Oxidation |
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