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4 C25不锈钢BBD模型的优化水平和Rp值

Table 4 Optimization levels and Rp values of the BBD model for C25 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 137300 2 60 3 1 94290 3 60 3 5 69840 4 60 3 10 60360 5 60 6 0.1 19600 6 60 6 1 21320 7 60 6 5 17520 8 60 6 10 14400 9 80 3 0.1 141000 10 80 3 1 52650 11 80 3 5 22960 12 80 3 10 23110 13 80 6 0.1 7394 14 80 6 1 9327 15 80 6 5 7137 16 80 6 10 5972 17 110 3 0.1 42500 18 110 3 1 17740 19 110 3 5 18130 20 110 3 10 9208 21 110 6 0.1 2059 22 110 6 1 1931 23 110 6 5 1915 24 110 6 10 1535