{"title":"Microstructure and first hydrogenation properties of Ti30V60M10 + 4 wt% Zr (M=Fe, Co, and Ni)","authors":"Chourouk Kefi, Jacques Huot","doi":"10.1016/j.ijhydene.2025.04.001","DOIUrl":null,"url":null,"abstract":"<div><div>The hydrogenation properties of Ti<sub>30</sub>V<sub>60</sub>M<sub>10</sub> (M = Fe, Co, and Ni) + 4 wt% Zr alloys at room temperature were investigated. The alloys were tested in their as-cast state and after being heat treated at 300 °C under a dynamic vacuum for 2 h. All as-cast alloys presented a two-phase microstructure consisting of a BCC matrix and a C14 secondary bright phase rich in Zr and M atoms. The BCC structure transformed into a face-centred cubic (FCC) main phase upon hydrogenation, while the C14 phase also hydrogenate but kept its structure. The as-cast alloys showed slow hydrogen absorption initially, but heat treatment reduced incubation times and improved hydrogenation kinetics for all compositions.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"126 ","pages":"Pages 170-177"},"PeriodicalIF":8.3000,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Hydrogen Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0360319925016118","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
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Abstract
The hydrogenation properties of Ti30V60M10 (M = Fe, Co, and Ni) + 4 wt% Zr alloys at room temperature were investigated. The alloys were tested in their as-cast state and after being heat treated at 300 °C under a dynamic vacuum for 2 h. All as-cast alloys presented a two-phase microstructure consisting of a BCC matrix and a C14 secondary bright phase rich in Zr and M atoms. The BCC structure transformed into a face-centred cubic (FCC) main phase upon hydrogenation, while the C14 phase also hydrogenate but kept its structure. The as-cast alloys showed slow hydrogen absorption initially, but heat treatment reduced incubation times and improved hydrogenation kinetics for all compositions.
期刊介绍：
The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc.
The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.
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