부피법 자동장치를 이용한 LaNi5 수소화합물의 열분석 장치개발

To apply Sievert’s type apparatus to thermal analysis of hydrogen absorption materials, the dehydrogenation of LaNi5 system was investigated. As the initial wt% of hydrogen was increased from 0.44 to 1.24 wt%, the peak temperature of evolution rate shifted to higher temperature. However, with the initial wt% of hydrogen higher than 0.95 wt%, the peak temperature of evolution rate did not change. As the heating rate was increased, the peak temperature increased; the peak temperatures for heating rates 0.5, 1.0 and 1.5 K/min were 262.2, 264.1, and 265.9 K respectively. The Sievert’s type automatic apparatus can be successively applied to the thermal analysis of LaNi5 hydride.