title: Design of (Nb, Mo)40Ti30Ni30alloy membranes for combined enhancement of hydrogen permeability and embrittlement resistance.
abstract: The effect of substitution of Nb by Mo in Nb40Ti30Ni30was investigated with respect to microstructural features and hydrogen dissolution, diffusion and permeation. As-cast Nb40-xMoxTi30Ni30(x = 0, 5, 10) alloys consist of primary bcc-Nb phase and binary eutectic (bcc-Nb + B2-TiNi). The substitution of Nb by Mo reduces the hydrogen solubility in alloys, but may increase (x = 5) or decrease (x = 10) the apparent hydrogen diffusivity and permeability. As-cast Nb35Mo5Ti30Ni30exhibits a combined enhancement of hydrogen permeability and embrittlement resistance as compared to Nb40Ti30Ni30. This work confirms that Mo is a desirable alloying element in Nb that can contribute to a reduction in hydrogen absorption and an increase in intrinsic hydrogen diffusion, thus improving embrittlement resistance with minimal permeability penalty.
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, PR China. hitlxz@126.com.
authors.forename: Xinzhong
authors.initials: X
authors.lastname: Li
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, PR China.
authors.forename: Xiao
authors.identifier: 0000-0002-5044-0499
authors.initials: X
authors.lastname: Liang
authors.affiliation: Otto Schott Institute of Materials Research, Friedrich Schiller University, Jena, 07743, Germany. dongmei.liu@uni-jena.de.
authors.forename: Dongmei
authors.initials: D
authors.lastname: Liu
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, PR China.
authors.forename: Ruirun
authors.initials: R
authors.lastname: Chen
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, PR China.
authors.forename: Feifei
authors.initials: F
authors.lastname: Huang
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, PR China.
authors.forename: Rui
authors.initials: R
authors.lastname: Wang
authors.affiliation: Otto Schott Institute of Materials Research, Friedrich Schiller University, Jena, 07743, Germany.
authors.forename: Markus
authors.initials: M
authors.lastname: Rettenmayr
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, PR China.
authors.forename: Yanqing
authors.initials: Y
authors.lastname: Su
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, PR China.
authors.forename: Jingjie
authors.initials: J
authors.lastname: Guo
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, PR China.
authors.forename: Hengzhi
authors.initials: H
authors.lastname: Fu