Simulated Seawater on the Corrosion Performance of Q235 Steel
Taking Q235 carbon steel as the research object,the effect of factors such as speed,temperature,acidity and alkalinity on its corrosion performance in simulated seawater was investigated using a rotary hanging plate corro-sion tester.The results show that the corrosion rate varies with temperature in two stages.In the first stage,when temperature is lower than 45℃,the corrosion rate continuously increases with the increase of temperature.In the second stage,when temperature exceeds 45℃,the slope of the curve is maximum and the corrosion rate reaches its maximum value.The corrosion rate shows two stages as the speed changes.In the first stage,when the speed is less than 60 r/min,the corrosion rate remains basically unchanged and remains constant;In the second stage,when the speed is greater than 60 r/min,the slope of the curve increases,and the corrosion rate sharply increases.The corrosion rate continuously increases with the increase of speed,and a critical value of 60 r/min appears;The corro-sion rate decreases continuously with the increase of acidity and alkalinity.The conclusions obtained have certain reference value for the corrosion and protection of Q235 steel in marine environments.
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