<正> 一、前言12Cr2MoAlXt 低合金钢是一种新钢种,具有良好的耐海水腐蚀性能。为了探讨该钢种的耐蚀原因以及比较测试腐蚀速度的几种常用方法,我们测定了12Cr2MoAlXt 钢和 A3钢在海水中的电化学性质。
Electrochemical potentiodynami cpolarization,linear polarization and weight loss methods,were used to study the corrosion behavior of 12Cr2MoAlXt steel in sea water. Experimental results showed that the limiting oxygen diffusion current on 12Cr2MoA1Xt steel was much smaller than that on A3 steel and reached a steady value in a few days.It was supposed to be the main factor for improved corrosion resistance in sea water.
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