【摘要】 城市污水回用作循环冷却水系统,讨论了NH3-N、COD、Cl-、SO42-等因素对316L不锈钢耐腐蚀性的影响。极化曲线表明:当NH3-N的质量浓度超过18 mg/L时,NH3-N促进了不锈钢的点蚀;COD对316L不锈钢的点蚀并无多大的影响;Cl-促进点蚀,而SO42-的质量浓度小于300 mg/L时,SO42-对其点蚀有缓蚀作用。更多还原

【Abstract】 City sewage was reused in circulating cooling water system,the influence of some factors,such as NH3-N、COD、Cl-、SO42-on the corrosion resistance of 316L stainless steel were discussed.The polarization curve showed that: when the mass concentration of NH3-N exceeded 18 mg/L,pitting corrosion of the stainless steel was improved by NH3-N and Cl-,however,COD had little influence on it;while the mass concentration of SO42-was less than 300 mg/L,SO42-had anti-corrosion performance on the pitting corrosion.更多还原