Microstructure and peeling behavior of MOCVD processed oxide insulator coating before and after ion beam irradiation
The mechanical durability and soundness of the several oxide coating materials used as the electrical insulator and tritium permeation barrier are important design parameters on an advanced liquid breeding blanket system. We tried to investigate the adhesion strength evaluation due to the peeling be...
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doaj-9bffb6707c904b8c98ec3a856dc4c0142020-11-25T00:20:31ZengElsevierNuclear Materials and Energy2352-17912018-08-0116123127Microstructure and peeling behavior of MOCVD processed oxide insulator coating before and after ion beam irradiationY. Hishinuma0M. Tanaka1T. Tanaka2K. Matsuda3H. Watanabe4T. Muroga5National Institute for Fusion Science, Toki-shi, Gifu 509-5292, Japan; Corresponding author.University of Toyama, Toyama-shi, Toyama 930-8555, JapanNational Institute for Fusion Science, Toki-shi, Gifu 509-5292, JapanUniversity of Toyama, Toyama-shi, Toyama 930-8555, JapanResearch Institute for Applied Mechanics, Kyushu University, Kasuga-shi, Fukuoka 816-8580, JapanNational Institute for Fusion Science, Toki-shi, Gifu 509-5292, JapanThe mechanical durability and soundness of the several oxide coating materials used as the electrical insulator and tritium permeation barrier are important design parameters on an advanced liquid breeding blanket system. We tried to investigate the adhesion strength evaluation due to the peeling behavior on the MOCVD processed multilayered oxide coating (Er2O3/Y2O3) on the stainless steel (SUS) substrate before and after Cu2+ ion beam irradiation using the nano-scratch tester. The adhesion strength of the coating material was able to estimate easily from the scratch trace and scratch stress, and the nano-scratch test was suitable method to evaluate the mechanical durability and soundness. After the Cu2+ ion beam irradiation, the adhesion strength was decreased with increasing the displacement per atom (dpa). The adhesion strength degradation by the Cu2+ ion beam irradiation was caused by the embrittlement of the thicker and amorphous Fe-(Y)-O interlayer formation between Y2O3 buffer layer and SUS substrate based on the displacement damage dose effect. Keywords: Er2O3, MOCVD, Multi-layered coating, Ion beam irradiation, Adhesion strength, Nano-scratch methodhttp://www.sciencedirect.com/science/article/pii/S2352179117301746 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Y. Hishinuma M. Tanaka T. Tanaka K. Matsuda H. Watanabe T. Muroga |
spellingShingle |
Y. Hishinuma M. Tanaka T. Tanaka K. Matsuda H. Watanabe T. Muroga Microstructure and peeling behavior of MOCVD processed oxide insulator coating before and after ion beam irradiation Nuclear Materials and Energy |
author_facet |
Y. Hishinuma M. Tanaka T. Tanaka K. Matsuda H. Watanabe T. Muroga |
author_sort |
Y. Hishinuma |
title |
Microstructure and peeling behavior of MOCVD processed oxide insulator coating before and after ion beam irradiation |
title_short |
Microstructure and peeling behavior of MOCVD processed oxide insulator coating before and after ion beam irradiation |
title_full |
Microstructure and peeling behavior of MOCVD processed oxide insulator coating before and after ion beam irradiation |
title_fullStr |
Microstructure and peeling behavior of MOCVD processed oxide insulator coating before and after ion beam irradiation |
title_full_unstemmed |
Microstructure and peeling behavior of MOCVD processed oxide insulator coating before and after ion beam irradiation |
title_sort |
microstructure and peeling behavior of mocvd processed oxide insulator coating before and after ion beam irradiation |
publisher |
Elsevier |
series |
Nuclear Materials and Energy |
issn |
2352-1791 |
publishDate |
2018-08-01 |
description |
The mechanical durability and soundness of the several oxide coating materials used as the electrical insulator and tritium permeation barrier are important design parameters on an advanced liquid breeding blanket system. We tried to investigate the adhesion strength evaluation due to the peeling behavior on the MOCVD processed multilayered oxide coating (Er2O3/Y2O3) on the stainless steel (SUS) substrate before and after Cu2+ ion beam irradiation using the nano-scratch tester. The adhesion strength of the coating material was able to estimate easily from the scratch trace and scratch stress, and the nano-scratch test was suitable method to evaluate the mechanical durability and soundness. After the Cu2+ ion beam irradiation, the adhesion strength was decreased with increasing the displacement per atom (dpa). The adhesion strength degradation by the Cu2+ ion beam irradiation was caused by the embrittlement of the thicker and amorphous Fe-(Y)-O interlayer formation between Y2O3 buffer layer and SUS substrate based on the displacement damage dose effect. Keywords: Er2O3, MOCVD, Multi-layered coating, Ion beam irradiation, Adhesion strength, Nano-scratch method |
url |
http://www.sciencedirect.com/science/article/pii/S2352179117301746 |
work_keys_str_mv |
AT yhishinuma microstructureandpeelingbehaviorofmocvdprocessedoxideinsulatorcoatingbeforeandafterionbeamirradiation AT mtanaka microstructureandpeelingbehaviorofmocvdprocessedoxideinsulatorcoatingbeforeandafterionbeamirradiation AT ttanaka microstructureandpeelingbehaviorofmocvdprocessedoxideinsulatorcoatingbeforeandafterionbeamirradiation AT kmatsuda microstructureandpeelingbehaviorofmocvdprocessedoxideinsulatorcoatingbeforeandafterionbeamirradiation AT hwatanabe microstructureandpeelingbehaviorofmocvdprocessedoxideinsulatorcoatingbeforeandafterionbeamirradiation AT tmuroga microstructureandpeelingbehaviorofmocvdprocessedoxideinsulatorcoatingbeforeandafterionbeamirradiation |
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