The Changes of Hydrogenation Properties of LaNi5 alloy by Hydrogen Charging Condition

수소주입조건 변화에 따른 LaNi5합금의 특성변화

  • Ahn, Hyo-Jun (Department of Metallurgical & Materials Engineering Gyeongsang National University)
  • 안효준 (경상대학교 금속재료공학과)
  • Published : 1994.06.30


The changes of hydrogenation properties of $LaNi_5$ by hydrogen charging condition were investigated using the P-C-isotherm curves, DSC(Differential Scanning Calorimetry), GC(Gas Chromatograph), X-ray diffractometer. As a results of static hydrogen charging, the hydrogen storage capacity gradually decreased and the plateau region severly slopped. Most of the degraded properties could be restored by the annealing treatment. The degradation of hydrogen storage capacity was related with the formation of stable hydride, which was not dehydrided at room temperature.