含Ce S31254超级奥氏体不锈钢析出相析出行为及耐蚀性

张小丽, 寻懋年, 梁小红, 张彩丽, 韩培德

Precipitation of Second Phase and Its Effect on Corrosion Resistance of Ce-containing S31254 Super Austenitic Stainless Steel

ZHANG Xiaoli, XUN Maonian, LIANG Xiaohong, ZHANG Caili, HAN Peide

表2 S31254-Ce不锈钢经固溶及不同时效温度处理90 min后等效电路拟合结果

Table 2 Equivalent circuit fitting results of S31254-Ce stainless steel treated at different aging temperatures for 90 min

Temperature / ℃ Rs / Ω·cm2 Rct / Ω·cm2 Qct / 10-5 Ω-1·cm-1s-1 nct Rf / kΩ·cm2 Qf / 10-5 Ω-1·cm-1s-1 nf Solution treatment 10.41 2138.77 7.18 0.89 344.61 5.04 0.88 800 10.57 2057.56 7.24 0.89 332.85 5.18 0.90 820 10.53 1935.78 7.70 0.89 319.59 5.64 0.91 840 10.38 1781.43 8.38 0.90 249.81 7.27 0.89 860 10.32 1149.74 9.04 9.91 131.26 8.35 0.90 880 10.61 796.23 9.77 0.83 104.72 9.26 0.88 900 10.86 520.65 10.06 0.85 85.77 9.92 0.87