Mn2+ 对304L和C25不锈钢在高温硝酸中腐蚀行为的协同作用机制与响应曲面模型研究

孙欣, 屈佳伟, 高子淋, 郑越, 马爱利, 姚琳, 张连民, 郑玉贵

Mechanism and Response Surface Model for Effect of Mn2+ on 304L and C25 Stainless Steels in High-temperature Nitric Acid

SUN Xin, QU Jiawei, GAO Zilin, ZHENG Yue, MA Aili, YAO Lin, ZHANG Lianmin, ZHENG Yugui

表5 304L不锈钢BBD模型的优化水平和Rp值

Table 5 Optimization levels and Rp values of the BBD model for 304L stainless steel

Number Temperature / ℃ Nitric acid concentration / mol·L-1 Mn2+ ion concentration / g·L-1 Rp / Ω·cm-2 1 60 3 0.1 59540 2 60 3 1 48660 3 60 3 5 36170 4 60 3 10 29510 5 60 6 0.1 17250 6 60 6 1 15200 7 60 6 5 14070 8 60 6 10 14240 9 80 3 0.1 29570 10 80 3 1 30190 11 80 3 5 24800 12 80 3 10 20790 13 80 6 0.1 5485 14 80 6 1 4815 15 80 6 5 5205 16 80 6 10 4669 17 110 3 0.1 11340 18 110 3 1 10270 19 110 3 5 12060 20 110 3 10 9674 21 110 6 0.1 1236 22 110 6 1 1256 23 110 6 5 1177 24 110 6 10 1159