CORROSION BEHAVIOR OF LOW-ALLOYED CAST IRONS EXPOSED TO RUNNING NATURAL SEAWATER
低合金铸铁动海区实海腐蚀行为研究

In this paper, corrosion behavior of low-alloyed cast irons exposed to running seawater with running speeds of 3, 7, 11 m/s, respectively, is investigated and the obtained results are discussed. The experimental results show that the average corrosion rates in the running seawater are clearly higher than those in static seawater and its average corrosion rates increase obviously with increase of flow speed. The main type of corrosion of low-alloyed cast irons exposed to the running seawater is turbulent-flow corrosion when the running speed of the seawater is higher than 3 m/s.