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Kobata, Masaaki; Okane, Tetsuo; Nakajima, Kunihisa; Suzuki, Eriko; Kobayashi, Keisuke*; Osaka, Masahiko
no journal, ,
To Evaluate of re-evaporation behavior of Cs-Si-Fe-O compound formed by Cs chemisorption on the stainless steel under severe accident, HAXPES analysis was performed on the re-heated samples under various atmospheres. As a result, it was found that the re-heated samples under a reducing atmosphere, were changed to a Cs-Si-O compound with Fe desorption.
Kobata, Masaaki; Morohashi, Yuko; Abe, Kazuhide; Yamada, Ippei; Fukuda, Tatsuo; Koarai, Kazuma; Tanida, Hajime; Kamiya, Junichiro
no journal, ,
This study aimed to improve non-evaporable getter (NEG) coating technology on titanium substrates, focusing on lowering activation temperatures and enhancing repeatability. Using Hard X-ray Photoelectron Spectroscopy (HAXPES) and Secondary Ion Mass Spectrometry (SIMS), we analyzed NEG activation and degradation mechanisms. The effects of titanium, stainless steel (SUS316), and beryllium copper (BeCu) substrates on NEG properties were compared. Results suggested that the BeCu substrate had the lowest activation temperature, indicating its potential advantage for low-temperature NEG activation.