海水流速对DH36平台钢阴极保护的影响

范丰钦, 宋积文, 李成杰, 杜敏

Effect of Flow Velocity on Cathodic Protection of DH36 Steel in Seawater

FAN Fengqin, SONG Jiwen, LI Chengjie, DU Min

表2 流速为0.20 m/s时不同电流密度条件下沉积层中各元素的含量

Table 2 Contents of main elements in calcareous deposit formed at different current densities and 0.20 m/s flow rate

Current density mA/m2 C O Mg Ca Fe 400 19.49 34.37 9.14 0.06 37.64 600 11.45 51.25 17.49 0.09 19.73 800 (inner layer) 9.87 66.65 21.66 0.72 1.10 800 (outer layer) 21.04 66.54 0.47 11.96 0.00