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Influence of severe plastic deformation and some additives on hydrogenation of ZK60 alloy
Journal of Physics and Chemistry of Solids ( IF 4.3 ) Pub Date : 2020-12-30 , DOI: 10.1016/j.jpcs.2020.109927
Aqeel Abbas , Kun-Che Hu , Hsin-Chih Lin , Kun-Ming Lin

Using ZK60 commercial magnesium alloy as hydrogen storage material, the effects of equal channel angular extrusion (ECAP) passes and different weight percentages of additives (activated carbon, vanadium and titanium) on hydrogen absorption characteristics were studied. ECAPed ZK60 with additives was prepared by high-energy ball milling for 20 h.The rate of hydrogenation was measured at different temperatures for five cycles using a Sievert's apparatus. The results reveal that hydrogen absorption increased to 5.3 wt% after 12 passes of ECAP in monolithic ZK60. The 12-pass ECAPed ZK60 along with the addition of 5 wt% activated carbon, and 2 wt% vanadium has improved hydrogenation to 6.7 wt% at 350 °C. The hydrogen absorption capacity is increased after each cycle for most ECAPed ZK60 samples, except that doped with 10 wt% activated carbon and 2 wt% titanium in which hydrogen absorption capacity is significantly reduced from 5.6 wt% to 3.2 wt% after the first cycle at 300°C.



中文翻译:

严重塑性变形和某些添加剂对ZK60合金氢化的影响

以ZK60市售镁合金为储氢材料,研究了等通道角挤压(ECAP)通过和不同重量百分比的添加剂(活性炭,钒和钛)对氢吸收特性的影响。通过高能球磨20 h制备带有添加剂的ECAPed ZK60 。使用Sievert's装置在五个不同的温度下测量氢化速率。结果表明,整体式ZK60中的ECAP经过12次后,氢吸收增加到5.3 wt%。在12通ECAPed ZK60以及5 wt%的活性炭和2 wt%的钒在350°C时的氢化作用提高到6.7 wt%。对于大多数ECAPed ZK60样品,每个循环后的氢吸收能力都会增加,除了掺杂了10 wt%的活性炭和2 wt%的钛外,其中在第一次循环后,氢吸收能力从5.6 wt%显着降低到3.2 wt%。 300℃

更新日期:2021-01-04
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