Alternate Immersion Method and Its Application of Studying on the Weathering Steel

The alternate immersion following a prescribed cycle of samples was carried out by means of a micromotor controlled by integrated circuit. The design of this instrument was described and the effect of rare earths on the resistance to atmospheric corrosion of steel 09CuPTiRE was checked. It was shown that the rare earths in steel effectively enhance the resistanc to atmospheric corrosion when it's content in steel is above around 0.012%.