远青弧菌、硫酸盐还原菌及其混合菌种作用下 B10合金的海水腐蚀行为

魏仁超, 许凤玲, 蔺存国, 唐晓, 李焰

CORROSION BEHAVIOR OF B10 ALLOY EXPOSED TO SEAWATER CONTAINING VIBRIO AZUREUS, SULFATE-REDUCING BACTERIA, AND THEIR MIXTURE

WEI Renchao, XU Fengling, LIN Cunguo, TANG Xiao, LI Yan

表1 B10合金在4种腐蚀介质中的EIS解析参数

Table 1 Parameters of electrochemical impedance of B10 alloy immersed in different mediums

Medium Time Rs Ym nm Rm Yt nt Rt W, Y0 Ω·cm2 Ω-1·sn·cm-2 Ω·cm2 Ω-1·sn·cm-2 Ω·cm2 Ω-1·s5·cm-2 Sterile 1 h 19.34 296.2 0.7334 4198 3.753×10-3 seawater 1 d 5.757 47.66 0.6027 1.696×104 104.5 0.6953 1.690×104 1.026×10-3 2 d 7.519 58.70 0.5651 1.354×104 28.98 0.7639 1.350×104 8.670×10-4 4 d 19.65 87.49 0.6399 1.211×104 1.334×10-3 7 d 23.36 86.71 0.6271 1.438×104 1.634×10-3 13 d 21.15 79.76 0.6341 1.497×104 28.54 0.7334 1.880×104 7.471×10-3 Vibria 1 h 9.043 414.6 0.7363 1600 5.695×10-3 azureus 1 d 10.11 183.4 0.8036 1837 9.490×10-5 2 d 11.91 74.30 0.8993 2707 3.870×10-5 4 d 10.75 68.97 0.9148 3551 31.59 0.6517 3.87×105 2.860×10-5 7 d 15.49 150.1 0.8001 9626 13850 1.000 3385 4.900×1013 13 d 13.40 166.1 0.8300 8877 17840 1.000 1778 2.640×1010 SRB 1 h 1.281 13.12 3.580×10-8 2.322 924.4 0.8188 80.31 6.960×10-4 1 d 3.112 976.7 0.8268 15.35 556.1 0.5131 1.771×104 5.660×10-5 2 d 3.194 180.7 1.000 1.606 1067 0.753 736.9 4.470×10-4 4 d 3.195 191.3 1.000 2.942 1141 0.7732 968.8 3.970×10-4 7 d 4.480 1858 0.7545 57.42 121.6 1.000 1517 3.480×10-4 13 d 4.019 1815 0.7586 70.39 206.4 0.9991 2235 2.480×10-4 Mixture 1 h 7.583 242.8 0.7946 56.38 202.7 0.7958 1.18×104 9.230×10-4 bacteria 1 d 6.595 185.3 0.8276 46.77 464.5 0.8278 1.66×104 1.254×10-3 2 d 4.713 164.3 0.8493 56.00 579.2 0.8370 2.41×104 1.256×10-3 4 d 5.450 176.3 0.8403 76.55 660.9 0.8603 4.35×104 3.266×10-3 7 d 9.947 217.1 0.8109 85.95 632.5 0.8749 5.94×104 2.330×10-3 13 d 5.322 235.3 0.8104 79.04 663.8 0.8690 8.33×104 2.420×106