Effect of hydrogen charging on the corrosion behavior of AlNbTiZr alloy in acidic environments
作者
单位
1National Materials Corrosion and Protection Data Center、Institute for Advanced Materials and Technology、University of Science and Technology Beijing、Beijing 100083、China 2 Key Laboratory for Corrosion and Protection of The Ministry of Education (MOE)、Beijing 100083、China
关键词
收录来源
International Corrosion Congress · 第22届国际腐蚀大会
摘要
The effect of electrochemical hydrogen charging on the corrosion behavior of the AlNbTiZr high entropy alloy in a 0.5 M H 2SO4 solution was investigated. The results revealed localized corrosion and cracks occurring after 120 h of charging, with failure analysis indicati ng transgranular cracking. Moreover, both the corrosion and passive current densities exhibited an increase with prolonged charging time from 0 h to 120 h. XPS analysis showed that the ratio of OH − to O 2− within the passive film increased from 0.379 to 0.8 54 as the time extended to 120 h. This observation suggested that hydrogenation diminished the alloys’ corrosion resistance.