采用恒电流方法测定了不同牺牲阳极材料在宝浪油田土壤中的电化学性能。结果表明 :Mg阳极电位较负 ,但电流效率偏低 ;铝阳极易生成产物膜阻碍电流发散 ;Zn阳极可适合宝浪油田土壤。铝合金最好不用作土壤中的牺牲阳极材料 ,主要是因为其表面生成的腐蚀产物在土壤中难以及时迁移 ,易于形成坚固的产物膜包裹在阳极周围 ,造成电流产生困难 ,可能使阴极保护失效。Zn—Al—Cd阳极适用于宝浪油田 5个不同区域土壤中 ,电流效率都高于 91% ,工作电位负于 - 0 910V。 The electrochemical properties of different sacrificial anode materials in the soil of Baolang Oilfield were determined by the galvanostatic method. The results showed that the Mg anode potential was negative, but the current efficiency was low. The aluminum anode could easily form a product film to obstruct the current divergence. The Zn anode could be suitable for the soil of Baolang oilfield. Aluminum alloy is best not used as sacrificial anode material in the soil, mainly because the corrosion products generated on its surface are difficult to migrate in time, easy to form a solid product film wrapped around the anode, resulting in current difficulties, may make the cathodic protection failure . The Zn-Al-Cd anode is suitable for use in the soil of five different areas of Baolang Oilfield. The current efficiency is higher than 91% and the working potential is negative to -0 910V.