A novel method to design Nb(W)–Ti–Co(Fe) alloy membrane with high hydrogen permeability and strong resistance to hydrogen embrittlement

Kunjun Zhu; Quan Zhang; Xinzhong Li; Zhaoxiang Ma; Xiangjin Zhao; Zhongli Liu; Jingjie Guo

Journal of Materials Research and Technology (Sep 2023)

A novel method to design Nb(W)–Ti–Co(Fe) alloy membrane with high hydrogen permeability and strong resistance to hydrogen embrittlement

Kunjun Zhu,
Quan Zhang,
Xinzhong Li,
Zhaoxiang Ma,
Xiangjin Zhao,
Zhongli Liu,
Jingjie Guo

Affiliations

Kunjun Zhu: College of Nuclear Equipment and Nuclear Engineering, Yantai University, 264005 Yantai, PR China; Corresponding author.
Quan Zhang: College of Nuclear Equipment and Nuclear Engineering, Yantai University, 264005 Yantai, PR China
Xinzhong Li: School of Iron and Steel, Soochow University, 215000 Suzhou, PR China; Corresponding author.
Zhaoxiang Ma: College of Nuclear Equipment and Nuclear Engineering, Yantai University, 264005 Yantai, PR China
Xiangjin Zhao: College of Nuclear Equipment and Nuclear Engineering, Yantai University, 264005 Yantai, PR China
Zhongli Liu: College of Nuclear Equipment and Nuclear Engineering, Yantai University, 264005 Yantai, PR China
Jingjie Guo: School of Materials Science and Engineering, Harbin Institute of Technology, 150001 Harbin, PR China

Journal volume & issue: Vol. 26
pp. 4918 – 4924

Abstract

Read online

A hydrogen permeable Nb43W5Ti27Co20Fe5 alloy membrane was designed and its microstructure and hydrogen transportation performances were systematically studied. W mainly dissolves into primary body-centered cubic (bcc)-(Nb) phases, while Fe is captured in eutectic structures. Substituting Nb with W leads to a substantial reduction in hydrogen solubility and substituting Co with Fe negligibly affects hydrogen solubility. The W and Fe substitutions contribute to an enhanced intrinsic hydrogen diffusion coefficient D∗. The designed Nb43W5Ti27Co20Fe5 alloy membrane exhibits lower hydrogen solubility and higher hydrogen permeability at temperatures below 623 K than that of the original Nb48Ti27Co25 alloy membrane. No hydrogen-induced failures were found for the designed Nb43W5Ti27Co20Fe5 alloy membrane during cooling to room temperature and under long-term hydrogen permeation at 673 K for 72 h, whereas the original alloy membrane failed at 444 K during cooling to room temperature and after 19 h during hydrogen permeation at 673 K. The designed Nb43W5Ti27Co20Fe5 alloy membrane exhibits high hydrogen permeability and strong resistance to hydrogen embrittlement.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

About the journal

Abstract

Keywords