Electrochemical corrosion behavior of TA1 welded joints and substrate by frequency induction welding in NaCl solution
High-frequency induction welding of TA1 thin-walled pipes there are differences in terms of the microstructure of the welded joint and the substrate,the electrochemical corrosion behavior is often differ-ent.The electrochemical corrosion behavior of TA1 substrate and welded joints in different concentrations of NaCl solutions was analyzed by using the dynamic potential polarization technique and electrochemical impedance spectroscopy(EIS).The experimental results showed that with the increase of chloride ion con-centration,the corrosion potential of TA1 substrate and welded joints were negatively shifted,the polariza-tion resistance gradually decreased,and the corrosion rate increased.Compared with the substrate,the wel-ded joint has hiqher corrosion potential,larger polarization resistance and lower corrosion rate,indicating better corrosion resistance.The experiment can provide a certain theoretical basis for the practical applica-tion of high-frequency induction welding TA1 thin-walled pipe in seawater environment.
TA1 thin-walled pipetitanium alloyhigh frequency induction weldingelectrochemical corrosion
NETL
NSTL
万方数据
