摘要
The increasing utilization of titanium alloys in marine environments makes their microbiologically influenced corrosion study a timely matter.This work demonstrated that the corrosion ofTi-6 Al-4 V alloy was accelerated by a marine bacterium Shewanella algae in 2216 E medium with different Cl-level.Various electrochemical,pitting morphology and passive film analyses demonstrated that S.algae weakened the passive film,which made Cl-more aggressive.The synergy of those two factors caused considerable corrosion acceleration of the titanium alloy,leading to a maximum pit depth of 3.2μm and corrosion current density of 26.5 nA cm_(-2) in 2216 E medium with 3.50%(w/w)Cl^(-).
基金
financially supported by the National Natural Science Foundation of China(Nos.51871050 and 51901039)
the Fund of Fujian Province Key Laboratory of Ship and Ocean Engineering
the Natural Science Foundation of Liaoning Province(No.20180510041)
the Liaoning Revitalization Talents Program(No.XLYC1907158)
the Fundamental Research Funds for the Central Universities of the Ministry of Education of China(Nos.N180205021,N180203019,and N2002019)。
