【摘要】 采用失重法测量了HT200浸泡在不同浓度盐溶液中的腐蚀率,试验结果表明,在浓度高于3%的盐溶液中,铸铁腐蚀率随盐溶液浓度的升高而降低。盐溶液浓度的升高,对pH值的影响不大,但溶液中的电阻增大,使电化学腐蚀电流减小,同时,溶液中盐浓度的提高使溶液中含氧量降低,是减小铸铁腐蚀率的主要原因。更多还原

【Abstract】 Corrosion rate of cast iron HT200 immersed in salt solutions with different concentration was investigated by weight-loss method.The results indicated that the corrosion rate of the cast iron decreases with the increase of concentration of salt solution when the concentration above 3%.The increase of concentration affects a little on the pH value of salt solution,but increases the electric resistance in the solution and decreases the electrochemical corrosion current,at the same time also reduces the density of oxygen.Those are the main reasons of decreasing the corrosion rate of cast iron.更多还原