Abstract

Pure titanium and 18Mn18Cr0.6 N austenitic stainless steel were selected as model materials to capture hydrogen. Specimens were immersed or exposed to cavitation erosion in ultrapure water. The surface compositions of immersed and eroded specimens were studied using time-of-flight secondary ion mass spectrometry. Throughout the entire sputtering time, the yields of H− from the eroded specimens were significantly higher than those from the immersed specimens. The hydrogen concentration in eroded specimens had increased. Hydrogen participated in the process of cavitation erosion in water. Finally, the sources of this extra hydrogen, and how it entered the specimen, were discussed.

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