含铜双相不锈钢在无菌/含菌环境下的耐蚀性研究

王永霞, 向红亮, 杨彩萍, 刘东

Corrosion Resistance of Copper-bearing Duplex Stainless Steel in Culture Medium without and with Bacteria

WANG Yongxia, XIANG Hongliang, YANG Caiping, LIU Dong

表2 试样EIS的Rs(QfRf)(QpRp)等效电路拟合结果

Table 2 Values of fit parameter of EIS in Rs(QfRf)(QpRp) equivalent circuits

Sample RS / Ωcm2 Cf / Ssecncm-2 n1 Rf / Ωcm2 Cp / Ssecncm-2 n2 RP / Ωcm2 Solution treatment without bacteria 11.2400 3.252×10-5 0.879 9.969×106 1.760×10-4 0.860 176.93 Aging at 540 ℃ without bacteria 12.2300 3.952×10-5 0.849 5.332×106 2.087×10-4 0.844 115.60 Aging at 560 ℃ without bacteria 13.8500 1.126×10-3 0.859 2.831×104 9.371×10-3 0.849 52.38 Aging at 580 ℃ without bacteria 14.5700 5.854×10-2 0.893 2.132×103 3.331×10-2 0.906 9.45 Solution treatment with bacteria 0.8307 1.338×10-4 0.875 3.684×105 7.794×10-4 0.881 84.19 Aging at 540 ℃ with bacteria 0.7517 1.051×10-2 0.854 1.667×103 2.617×10-2 0.922 6.69 Aging at 560 ℃ with bacteria 0.6437 6.276×10-5 0.929 4.105×105 5.428×10-4 0.901 89.59 Aging at 580 ℃ with bacteria 0.7632 1.106×10-3 0.856 1.848×104 9.551×10-2 0.900 33.76