The austenite stainless steel 204Cu (/% : 0.125-0.131C

0.32-0.34Si

8.51-8.73Mn

0.002-0.006S

0.035-0.047P

16.40-16.64Cr

2.53-2.72Ni

2.33-2.38Cu

0.257-0.271N

0-0.064Ce) is melted by a 10 kg vacuum induction furnace

forged to 25 mm x 25 mm square billet

and solid-solution-treated at 1150 ℃ for 2 h

water cooling. The effect of 0-0.064% Ce on corrosion-resisting properties of stainless steel 204Cu in 3.5% NaCl solution at 25 ℃ has been studied by using weight method

electrochemical polarization curves and AC impedance techniques. Results show that adding definite earth element Ce in stainless steel 204Cu

the anod polarization voltage value shifts positively

the corrosion current density decreases and the polarization resistance increases

that can obviously increase its corrosion-resisting properties

as adding 0.029% Ce the stainless steel 204Cu has optimizing corrosion-resisting properties.