https://scholars.lib.ntu.edu.tw/handle/123456789/640112
標題: | Engineering metal-carbide hydrogen traps in steels | 作者: | Liu, Pang Yu Zhang, Boning Niu, Ranming Lu, Shao-Lun Huang, Chao Wang, Maoqiu Tian, Fuyang Mao, Yong Li, Tong Burr, Patrick A. Lu, Hongzhou Guo, Aimin HUNG-WEI YEN Cairney, Julie M. Chen, Hao Chen, Yi Sheng |
公開日期: | 1-十二月-2024 | 卷: | 15 | 期: | 1 | 來源出版物: | Nature Communications | 摘要: | Hydrogen embrittlement reduces the durability of the structural steels required for the hydrogen economy. Understanding how hydrogen interacts with the materials plays a crucial role in managing the embrittlement problems. Theoretical models have indicated that carbon vacancies in metal carbide precipitates are effective hydrogen traps in steels. Increasing the number of carbon vacancies in individual metal carbides is important since the overall hydrogen trapping capacity can be leveraged by introducing abundant metal carbides in steels. To verify this concept, we compare a reference steel containing titanium carbides (TiCs), which lack carbon vacancies, with an experimental steel added with molybdenum (Mo), which form Ti-Mo carbides comprising more carbon vacancies than TiCs. We employ theoretical and experimental techniques to examine the hydrogen trapping behavior of the carbides, demonstrating adding Mo alters the hydrogen trapping mechanism, enabling hydrogen to access carbon vacancy traps within the carbides, leading to an increase in trapping capacity. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/640112 | ISSN: | 2041-1723 | DOI: | 10.1038/s41467-024-45017-4 |
顯示於: | 材料科學與工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。