High-temperature Corrosion of 316L Stalnless Steel in Saline and Alkali Deposition

The experiments of high-temperature corrosion of 316L stainless steel in mix deposition of 4.2% NaOH,1.3% NaCl,4.4% KOH and 3.7% KCl at 450 ℃~900 ℃ for 8 hour and 1 min had been carried out.The high-temperature corrosion mechanism was discussed,and the effects of temperature,corrosion medium and stability of oxide film were analyzed.The results showed that:the corrosion rate of 316L stainless steel increased with the temperature increasing in corrosion medium at 450 ℃~900 ℃.