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采用真空电弧炉制备了高熵合金ScTiVCrM(M=Co、Ni、Cu),研究了合金的微观组织及储氢性能。结果表明:合金均由复相组成,当M=Cu时,合金由CsCl-type相和BCC-type相组成;当M=Co、Ni时,合金由Cs Cl-type相、BCC-type相和FCC-type相三相组成。在298K,5.5MPa条件下,所有合金都可以活化,合金M=Co、Ni、Cu,第一次吸氢最大吸氢量分别为1.76wt%、2.19wt%、2.56wt%;随吸氢循环次数增加,所有合金的最大吸氢量均减少,其中M=Cu的第三次最大吸氢量相对于第一次降低了1.02wt%。
High-entropy alloy ScTiVCrM (M = Co, Ni, Cu) was prepared by vacuum arc furnace. The microstructure and hydrogen storage properties of the alloy were investigated. The results show that the alloys consist of complex phases. When M = Cu, the alloys consist of CsCl-type phase and BCC-type phase. When M = Co and Ni, the alloys consist of CsCl-type phase and BCC- FCC-type phase three-phase composition. Under the condition of 298K and 5.5MPa, all the alloys can be activated. The maximal hydrogen uptake amount of the first hydrogen absorption is 1.76wt%, 2.19wt% and 2.56wt% respectively for the alloys M = Co, Ni and Cu; The maximum hydrogen absorption of all the alloys decreased with the increasing of the number of times. The third maximum hydrogen absorption amount of M = Cu decreased by 1.02 wt% with respect to the first time.