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一、电防蚀所谓电防蚀,就是采用防腐蚀电流,使金属表面的不均匀电位降低到防腐蚀电位以下,以达到防腐蚀目的。在电防蚀方法中有阳极保护和阴极保护。但阳极保护适用于容易形成氧化膜的金属,以及氧化性酸溶液等特定条件。一般说来,电防蚀是指阴极保护。由于防腐蚀电流的供电方式不同,所以阴极保护又分为二种:
First, the electrical corrosion The so-called electrical corrosion, is the use of anti-corrosion current, the metal surface of the uneven potential to reduce the corrosion potential to achieve the purpose of anti-corrosion. There are anodic protection and cathodic protection in the electro-corrosion method. But the anode protection is suitable for the easy formation of the oxide film of metal, and oxidative acid solution and other specific conditions. In general, electrical corrosion refers to the cathodic protection. Due to the different anti-corrosion current power supply, so the cathodic protection is divided into two types: