TY - JOUR
T1 - Hydrogen permeability and mechanical properties of NiNb-M (M = Sn, Ti and Zr) amorphous metallic membranes
AU - Lai, Tianmiao
AU - Singh, Sudhanshu S.
AU - Singaravelu, Arun Sundar S
AU - Vadari, Kaushik Sridhar
AU - Khosravi, Afsaneh
AU - Chawla, Nikhilesh
AU - Thomas, Marylaura
N1 - Funding Information:
We would like to thank the financial support from Ira A. Fulton Schools of Engineering . We thank the Donors of the American Chemical Society Petroleum Research Fund for support of this research (award # 52461-DNI10 ). We gratefully acknowledge the use of facilities with the LeRoy Eyring Center for Solid State Science at Arizona State University. We also would like to acknowledge Dr. William L. Johnson, Pamela Albertson, and George Kaltenboeck at the California Institute of Technology for facilitating our use their arc-melter and the splat quencher. We sincerely thank Dr. Jerry Y.S. Lin and his students in ASU for help in designing the hydrogen permeation testing system. We thank Dr. William Petuskey in ASU for the use of the DSC. Finally, we would also like to acknowledge Fred Pena at ASU for his extensive help in building and maintaining the hydrogen permeation testing system.
Publisher Copyright:
© 2016 Elsevier B.V.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2016/11/5
Y1 - 2016/11/5
N2 - In this paper, we report on the hydrogen permeability at 673 K of 45-μm thick splat-quenched Ni60Nb35M5 (M = Sn, Ti and Zr) amorphous metallic membranes. Changes in mechanical properties, induced by hydrogen, were evaluated by nanoindentation. The effect of different elemental substitutions on both the hydrogen permeability and the thermal stability are discussed. Membrane crystalline structure was probed with X-ray diffraction and membrane thermal properties were analyzed with differential scanning calorimetry. The Young's modulus and hardness changes of the membranes were measured by nanoindentation. All of these ternary Ni-Nb membranes maintain their amorphous structure after 24 h of hydrogen permeability testing at 673 K. The Ni60Nb35Zr5 alloy membranes exhibited a hydrogen permeability of 10-10 mol m-1 s-1 Pa-0.5, the maximum of the three compositions tested. The hydrogen permeability declined slightly with time during the testing. Overall the amorphous metallic membranes were thermally stable and maintained their amorphous structure. A decrease in free volume is hypothesized to be the reason for i) the increase of Young's modulus and hardness; ii) hydrogen permeability decrease over time.
AB - In this paper, we report on the hydrogen permeability at 673 K of 45-μm thick splat-quenched Ni60Nb35M5 (M = Sn, Ti and Zr) amorphous metallic membranes. Changes in mechanical properties, induced by hydrogen, were evaluated by nanoindentation. The effect of different elemental substitutions on both the hydrogen permeability and the thermal stability are discussed. Membrane crystalline structure was probed with X-ray diffraction and membrane thermal properties were analyzed with differential scanning calorimetry. The Young's modulus and hardness changes of the membranes were measured by nanoindentation. All of these ternary Ni-Nb membranes maintain their amorphous structure after 24 h of hydrogen permeability testing at 673 K. The Ni60Nb35Zr5 alloy membranes exhibited a hydrogen permeability of 10-10 mol m-1 s-1 Pa-0.5, the maximum of the three compositions tested. The hydrogen permeability declined slightly with time during the testing. Overall the amorphous metallic membranes were thermally stable and maintained their amorphous structure. A decrease in free volume is hypothesized to be the reason for i) the increase of Young's modulus and hardness; ii) hydrogen permeability decrease over time.
KW - Amorphous metallic membrane
KW - Continuous measurement of stiffness
KW - Free volume
KW - Hydrogen permeability
KW - Nanoindentation
KW - Thermal stability
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U2 - 10.1016/j.jallcom.2016.05.100
DO - 10.1016/j.jallcom.2016.05.100
M3 - Article
AN - SCOPUS:84971265489
SN - 0925-8388
VL - 684
SP - 359
EP - 365
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -