氢化物
氢
解吸
材料科学
肿胀 的
压力(语言学)
合金
吸收(声学)
氢气储存
复合材料
结块
粒子(生态学)
金属
冶金
化学
吸附
有机化学
哲学
地质学
海洋学
语言学
作者
Kuojin Wu,Bingchao Cai,Lili Fan,Laishun Qin,Da Chen,Yuexiang Huang
标识
DOI:10.1016/j.ijhydene.2020.03.073
摘要
Hydrogen stored in a solid state form of metal hydrides offers a safe and efficient storage technique for hydrogen application. In a closed metal hydride tank, stresses may occur on the tank wall due to hydride expansion during hydrogen absorption process. In the present investigation, a novel testing system for stress evolution of MlNi4.5Cr0.45Mn0.05 alloy in a closed cylindrical reactor during hydrogen absorption-desorption process was built. The results show that considerable swelling stress is developed on the inner reactor wall during activation process though a high free space of 45% is presented. Increasing hydrogen charging pressure and alloy loading fraction increase the as-generated swelling stress. The metal hydride particle expansion caused by hydrogen absorption is the intrinsic factor for swelling stress evolution. The presence of particle agglomerate in a closed tank in which its expansion is constrained is responsible for the observed swelling stress accumulation.
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