The cavitation erosion behaviors of high strength steel electrochemically charged with hydrogen indistilled water and 3.5% NaCl solution were investigated. The results showed the surface hardness ofthe steel increased by electrochemical hydrogen-charging but no noticeable effect on the Ecorr undercondition of quiescence and cavitation respectively. Under condition of cavitation the corrosion rate-2 was enhanced, especially for specimen electrochemically charged with hydrogen at 50 mAcm for 12hours. The mass loss increased with the increasing of current density of electrochemical hydrogen- charging. The corrosion induced by erosion played an important role in the synergistic effect undercondition of cavitation and electrochemistry was confirmed that hydrogen embrittlement had a greatinfluence on cavitation erosion of high strength steel.
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