TY - JOUR
T1 - Microstructure and peeling behavior of MOCVD processed oxide insulator coating before and after ion beam irradiation
AU - Hishinuma, Y.
AU - Tanaka, M.
AU - Tanaka, T.
AU - Matsuda, K.
AU - Watanabe, H.
AU - Muroga, T.
N1 - Funding Information:
This study was supported financially and performed by the Fusion engineering research project in NIFS ( UFFF026 ).
Funding Information:
This study was supported financially and performed by the Fusion engineering research project in NIFS (UFFF026).
PY - 2018/8
Y1 - 2018/8
N2 - 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.
AB - 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.
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U2 - 10.1016/j.nme.2018.06.001
DO - 10.1016/j.nme.2018.06.001
M3 - Article
AN - SCOPUS:85049066178
VL - 16
SP - 123
EP - 127
JO - Nuclear Materials and Energy
JF - Nuclear Materials and Energy
SN - 2352-1791
ER -