用Sievert气体-固体平衡装置配合Tian-Calvet示差量热计测量了选定的金属间化合物氢化物的热力学性质。这种装置可以同时测量热函变化和吉布斯能;示差结构不须作P△V校正。量热器的构造要使热流进出测量区快速到达大量的散热装置和通过连接热电堆大部份排除。一个区装反应试样,另一区空着或装热容量相同的惰性材料。因此,示差热电堆信号将与反应的净热流成正比。由于气体进出的热流相互抵消,沿气体连通系统的小“寄生”热 The thermodynamic properties of the selected intermetallic compound hydrides were measured using a Sievert gas-solid balancer in combination with a Tian-Calvet differential calorimeter. This device can simultaneously measure enthalpy changes and Gibbs energy; differential structure does not require P △ V correction. The construction of the calorimeter is such that the heat flow in and out of the measurement area quickly reaches a large number of heat sinks and is largely eliminated by connecting the thermopiles. One zone contains the reaction sample, the other zone is empty or has the same inert material as the heat capacity. Therefore, the differential thermopile signal will be proportional to the net heat flux of the reaction. As the heat flow in and out of the gases cancel each other out, small “parasitic” heat flows along the gas communication system