stability and anti-disproportionation performance were systematically investigated. The results show that all alloys contain a main phase of ZrMn2 and little impure phase. Crucially, the lattice parameters of ZrMn2 phase increase after V substitution, as well as Mn decrease, leading the equilibrium pressure of dehydrogenation significantly decreases from 2.931 bar (ZrMn2-H) to 0.080 bar (ZrMn1.2V0.6-H) at 200 °C
摘要 为确保储运系统(
SDS)中氢同位素的安全性和高效性,在Ar气氛下采用感应悬浮熔炼技术制备了Zr-Mn-V基储氢合
金。ZrMn2-xVx (x = 0, 0.4, 0.6, 0.8)和ZrMn1.4-yV0.6 (y = 0, 0.2, 0.4)对Zr-Mn-V合
金的变质对显微组织、氢化动力学、de -/加氢热力学、循环稳定性和抗歧化性能进行了系统研究。结果表明,所有合
金均含有ZrMn2主相和少量杂质相。至关重要的是,V取代后ZrMn2相的晶格参数增加,Mn降低,导致脱氢平衡压力在200°时从2.931 bar(ZrMn2-H)显着降低到0.080 bar(ZrMn1.2V0.6-H) C,相应的焓从 43.29 变为 60.38 kJ mol-1 H2。与ZrCo相比,ZrMn1.2V0.6表现出优异的稳定性,在20次循环期间为1.63 wt%,并且在模拟
SDS环境下通过抗歧化测量几乎没有损失容量。因此,考虑到ZrMn1