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Title: Speculation of equilibrium pressure of Ti{sub 36}Zr{sub 40}Ni{sub 20}Pd{sub 4} icosahedral quasicrystal

Ti-Zr-Ni quasicrystals have been demonstrated to store a large number of hydrogen atoms, which implies strong potential application in hydrogen energy field for them. However, the desorption of hydrogen atoms in the quasicrystals is quite difficult, with the indication of high desorption temperature and slow desorption rate. The shortage limits their use in the field to a large extent. But this kind of quasicrystals might be used in nuclear fusion energy field, because tritium as a coral fuel for nuclear fusion needs tight storage. However, equilibrium pressure at room temperature of Ti-Zr-Ni quasicrystals, important for their application in fusion energy field, has not been clear yet. In this work, we designed a gas-solid reaction system with the pressure resolution of 10{sup −8}Pa and carried out hydrogen desorption investigation at different temperatures on Ti{sub 36}Zr{sub 40}Ni{sub 20}Pd{sub 4} icosahedral quasicrystal. Based on three Pressure-Composition-Temperature desorption curves, we speculate according to Van’t Hoff theory about hydrogen storage that its equilibrium pressure at room temperature could be at the magnitude of 10{sup −6}Pa, displaying good stability of hydrogen in the quasicrystal and also implying application prospects in fusion energy field for quasicrystals of this type.
Authors:
;  [1]
  1. China Academy of Engineering Physics, P.O. Box 919-71, Mianyang 621900, Sichuan Province (China)
Publication Date:
OSTI Identifier:
22488754
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1673; Journal Issue: 1; Conference: LAM-15: 15. international conference on liquid and amorphous metals, Beijing (China), 15-20 Sep 2013; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ATOMS; DESORPTION; DIAGRAMS; EQUILIBRIUM; HYDROGEN; HYDROGEN STORAGE; NICKEL ALLOYS; PALLADIUM ALLOYS; PHASE STABILITY; POTENTIALS; RESOLUTION; TEMPERATURE RANGE 0273-0400 K; THERMONUCLEAR REACTOR MATERIALS; TITANIUM ALLOYS; TRITIUM; ZIRCONIUM ALLOYS