Salt spray corrosion resistance of the iron-based alloy 1Cr12Ni3MoVN

To understand salt spray corrosion behavior and corrosion mechanism,the resistance of salt sprays corrosion for a Fe-based alloy1Cr12Ni3MoVN used in ship had been systemic studied in the paper. The surface of samples corroded for different times and corrosion products and corrosion weight loss and corrosion ratio had been analyzed; the result showed: after corrosion400 hours,the surface of samples is still right; the main component of corrosion product was Fe oxides; the corrosion of1Cr12Ni3MoVN started form the corrosion pits, and then extended; while the corrosion extent of samples tended to be same,new corrosion pits appeared,corrosion continued; In the first100 hours,the corrosion rate changed greatly.