影响钢铁大气腐蚀的因素

The Factors Affecting the Atmospheric Corrosion of Iron and Steel

降雨可加速大气腐蚀速度亦有减缓作用,每种金属都有一个产生大气腐蚀的临界湿度。一般说来,相对湿度愈大,金属的腐蚀也愈大,湿度、空气中的尘粒、盐粒及SO_2是大气腐蚀的重要因素。

The rainfall may either accelerate or retard the atmospheric corrosion rate. For different kind of metals, there is a critical moisture at which the atmospheric corrosion may occur. Generally, the more the moisture is, the greater severe atmospheric corrosion will be. The important factors affecting the atmospheric corrossion include dust, the slts and SO_2 containing in the atmosphere.