316L不锈钢、低铬铸铁、高硅铸铁在含硝浓硫酸中的腐蚀状况研究

Research on the corrosion status of 316L stainless steel,low-chrome cast iron and high-silicon cast iron in oil of vitriol containing NO_3^-

研究了浓硫酸和含硝浓硫酸在80℃和120℃时对316L不锈钢、低铬铸铁、高硅铸铁的腐蚀情况,考察了温度、浓度、应力对腐蚀的影响,对硫酸循环系统设备和管道选材有一定的指导作用。

The corrosion situation of 316L stainless steel, low-chrome cast iron and high-silicon cast iron in oil of vitriol and oil of vitriol containing NO3^- at 80℃ and 120℃ is studied. The influence of temperature, concentration and stress on the corrosion is investigated, which can provide reference to the equipment and pipe materials selecting for sulfuric acid circulating system.