Effect of helium implantation on the hydrogen retention of Cr2O3 films formed in an ultra-low oxygen environment |
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| Affiliation: | 1. The Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Tsinghua University, Beijing 100084, China;2. School of Mechanical Engineering, Guangxi University, Nanning 530004, China;3. Department of Mechanical Systems Engineering, Faculty of Engineering, Hiroshima Institute of Technology, 2-1-1 Miyake, Saeki-ku, Hiroshima 731-5193, Japan;1. Henan Engineering Research Center of Resource & Energy Recovery from Waste, Henan University, Kaifeng 475004, PR China;2. Institute of Functional Polymer Composites, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, PR China;1. School of Physics, Dalian Maritime University, Dalian, 116026, China;2. Information Science and Technology College, Dalian Maritime University, Dalian, 116026, China;3. Shenyang National Laboratory of Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China;4. Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian, 116024, China;1. LAAS-CNRS, University of Toulouse, 7 Avenue Du Colonel Roche, 31031 Toulouse, France;2. LCC-CNRS, University of Toulouse, 205 Route de Narbonne, 31077 Toulouse, France;3. CEMES-CNRS, University of Toulouse, 29 Rue Jeanne Marvig, 31055 Toulouse, France;4. Centre de Microcaractérisation Raimond CASTAING, University of Toulouse, CNRS, UT3-Paul Sabatier, INP, INSA, Espace Clément Ader, 3 Rue Caroline Aigle, 31400 Toulouse, France;5. CIRIMAT, University of Toulouse, CNRS, UT3-Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse, France;6. Department of Materials Science and Engineering, University of Texas at Dallas, Richardson, TX, USA;1. China Academy of Engineering and Physics, Mianyang, PR China;2. Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang, PR China |
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| Abstract: | To simulate and investigate the irradiation damage of neutron and transmutation effect (He production) on the hydrogen isotope trapping behavior, in the present study, a new monoclinic hydrogen permeation barrier composed of Cr2O3 was fabricated and helium implantation with different fluences was tentatively employed. First, pure chromium samples were oxidized in an ultra-low oxygen partial pressure (1.7 × 10?23 Pa) environment to obtain a single Cr2O3 layer. Then a dense layer of helium bubbles was formed in a substrate using a helium ion implantation method. Finally, the samples were treated in a hydrogen plasma environment at 500 °C. The damage, vacancy, and helium distribution in these samples were then simulated by SRIM. The morphology, phase, surface characteristics, thermal desorption, and electrochemical properties were subsequently characterized and evaluated. Thermal desorption spectrum analysis (TDS) was used to study the thermal desorption of hydrogen and helium at different temperatures. Our results showed that the inhibitory effect of the composite hydrogen barrier layer on the hydrogen diffusion in the substrate first increased and then decreased with the increase of the helium ion implantation fluence. |
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| Keywords: | Helium bubble Hydrogen barrier |
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