论文部分内容阅读
采用XRD、PCT和TG-DSC方法研究了VFe合金取代TiCr1.8合金中部分Cr对其结构与吸放氢性能的影响。结果表明:随 VFe取代 Cr 的量的增加,合金的相组成逐步由Laves相转变为BCC相,而且BCC相的晶胞参数随合金中VFe含量的增加而增大;合金的最大储氢量随VFe含量的增加而升高,合金的最大储氢量可达到5.2/结构单元,质量比约3.4%;但合金的可逆储氢量却随合金中VFe含量的增加先升高后降低;氢在BCC相的TiCr1.2(VFe)0.6合金中有两种具有不同结合能的储存位置。
XRD, PCT and TG-DSC methods were used to investigate the effect of partial Cr addition on the structure and hydrogen storage and desorption performance of TiCr1.8 alloy by VFe alloy. The results show that the phase composition of the alloy gradually changes from Laves phase to BCC phase with the increase of the amount of Cr replaced by VFe, and the unit cell parameters of BCC phase increase with the increase of VFe content in alloy. The maximum hydrogen storage capacity VFe content increases, the maximum hydrogen storage capacity can reach 5.2 / structural unit, the mass ratio of about 3.4%; but the reversible hydrogen storage alloy with the increase of VFe content in the alloy first increased and then decreased; hydrogen in the There are two storage sites in TiCr1.2 (VFe) 0.6 alloy with different binding energy in BCC phase.