Gamma-ray irradiation effect on corrosion rates of stainless steel, Ti and Ti-5Ta in boiling 9N nitric acid

Autor: Takao A. Yamamoto, Yasumasa Tanaka, Seiichiro Takeda, Shigeki Tsukui, Takayuki Nagai, Shinichi Okamoto, Masayuki Takeuchi
Rok vydání: 1996
Předmět:
Zdroj: Journal of Nuclear Materials. 228:162-167
ISSN: 0022-3115
DOI: 10.1016/s0022-3115(95)00227-8
Popis: Irradiation effect of γ-rays on corrosion rates of stainless steel (type 304L), titanium and a titanium-tantalum alloy (Ti-5Ta) in 9N boiling nitric acid was investigated by measuring weight losses of specimens leached under a 60 Co γ-ray environment of 1 kCkg −1 /h (4 MR/h). Tests without irradiation were as well performed to obtain reference data. Plots of the weight loss normalized to specimen's surface area against total leaching time exhibited linear relations when the first leaching batch is neglected. The corrosion rates calculated from the gradients indicated slight, though significant, irradiation effects, an enhancement in stainless steel while suppressions in Ti and Ti-5Ta. Corrosion modes were found to be insensitive to the irradiation.
Databáze: OpenAIRE