Stoichiometry and annealing condition on hydrogen capacity of TiCr2-x AB2 alloys
Stoichiometry and annealing condition on hydrogen capacity of TiCr2-x AB2 alloys
复制标题
化学计量和退火条件对TiCr2-x AB2合金氢容量的影响
DOI:
10.1016/j.ijhydene.2023.12.062
复制
发表时间:
2024
影响因子:
7.2
通讯作者:
McGrath A
中科院分区:
文献类型:
--
作者:
McGrath A
This study presents the effect of stoichiometry and annealing condition on Ti–Cr AB2-type hydrogen storage alloys. Prior to annealing the majority phase of the as-cast alloys was the C14 Laves phase, with separate Ti and Cr phases. Annealing treatment (1273 K/14 d) led to a transition from C14 to C15 Laves phase structure. Both C14 (as-cast) and C15 (annealed) cell size increased with Ti content, up to a ratio (Cr/Ti) of 1.6, due to B-site Ti substitution in the lattice up to a limit. Pressure composition isotherm (PCI) measurements demonstrated alloys containing a greater Ti content had a better maximum hydrogen storage capacity (1.5vs.1.03 wt%) and lower plateau pressure (9.4vs.15.8 bar) at 253 K. Annealing resulted in a lower storage capacity (1.05vs.1.49 wt%), greater plateau pressure (ca. 30 bar) and flatter plateau slope (25 % reduction in plateau slope). Reduction in hydrogen storage capacity of annealed alloys could be due to diffusion of residual Cr in the alloy into the C15 Laves phase during the annealing process, thereby changing the local composition as confirmed through X-ray diffraction (XRD).
登录
查看更多内容
影响因子:
6.2
作者:
M. Shibuya;J. Nakamura;E. Akiba
通讯作者:
M. Shibuya;J. Nakamura;E. Akiba
DOI:
--
发表时间:
1977
期刊:
影响因子:
--
作者:
Y. Machida;T. Yamadaya;M. Asanuma
通讯作者:
M. Asanuma
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
Xinhua Wang;Haizhen Liu;Hui Li
通讯作者:
Hui Li
DOI:
--
发表时间:
1951
期刊:
影响因子:
--
作者:
P. Duwez;Jack L. Taylor
通讯作者:
Jack L. Taylor
DOI:
--
发表时间:
1953
期刊:
影响因子:
--
作者:
B. Levinger
通讯作者:
B. Levinger