钒的活化及钒氢化物性能研究

Activating of Vanadium and Performance of Vanadium Hydride

真空条件下,金属钒长时间高温除气、反复吸放氘气,最终活化并饱和吸氘到氘、钒原子比接近2.0。实验确定的活化条件为:真空度2～3Pa,活化温度400℃,活化时间4h,初始吸附温度80～100℃,初始吸附压力0.6～3.4MPa,2～3次反复吸放纯化氘气。实验测得钒氢化物性能参数为:室温平衡压。0.2MPa;饱和吸附容量,0.47L/g;500℃时保留量,6.1%;200℃时平衡压,60MPa。实验研制的钒氢化物高压气源已成功用于惯性约束聚变高压充氘氚实验。

At vacuum, the metal vanadium was heated to high temperature for long time in order to remove the gas absorbed on the metal surface. After several absorbingreleasing deuteride cicrles, vanadium can be activated and the absorbed deuteride is saturated, and the vanadium-deuteride ratio is 2.0. The activating conditions are as follows. 400 ℃ of the activating temperature, 4 h of the lasting time, 80-100 ℃ of the initial adsorbing temperature, purified deuterium or D-T gas, 2 or 3 cicrles of absorbing-releasing deuteride. Study of vanadium hydride performance was also peformed, and the parameters measured in experiment are as follows. 0.2 MPa of equilibrium pressure at 20 ℃ and 60 MPa of equilibrium pressure at 200 ℃, 0.47 L/g of absorption capacity, 6.1% of residual capacity. The prepared vanadium hydride gas resource by this method has been successful applied in ICF high-pressure filling experiment.