Mechanism of long-standing question of 300 to 400 degree Celsius hydrogen peak in steel measured by Thermal Desorption Spectroscopy and its extended concept

摘要

This poster presentation reports on mechanism and extended concept about the phenomenon to appear hydrogen peak at around 300 to 400 °C region in Thermal Desorption Spectroscopy (TDS). Phenomenon to appear long-disputed hydrogen peak at around 300 to 400 °C in TDS: When hydrogen content is measured in TDS, hydrogen peak at around 300 to 400 °C often appears in rust-removed steel sample of intentionally-corroded steel samples, for example, by wet-and-dry cyclic corrosion test, or by exposing atmospheric condition near seashore. The hydrogen peak at around 300 to 400 °C does not appears in cathodically-charged steel sample. The origin of such hydrogen peak has been a long-disputed question at issue.