对于钢铁,锌是阳极性的,在普通温度下,锌层可对基体的钢、铁、提供电化学的保护,防止大气、海水所引起的腐蚀。用锌来保护钢、铁制品,可以采用热浸、电镀、喷涂、富锌涂料涂覆以及渗锌等方法进行。这些方法,互有特点及一定的用途,不能以一种方法来代替其它方法,而是互为补充的。英国的“锌发展协会”的一篇资料中, For steel, zinc is anodic. At normal temperatures, the zinc layer provides electrochemical protection of the steel and iron of the substrate against corrosion caused by the atmosphere and seawater. Zinc to protect steel, iron products, you can use hot-dip, electroplating, spraying, coating zinc-rich paint and zinc infiltration and other methods. These methods, each other’s characteristics and certain uses, can not substitute one method for the other but complement each other. In an article published by the British Association for Zinc Development,