论文部分内容阅读
采用准稳态的极化方法研究了两种碳钢在不同ｐＨ值的３％ＮａＣｌ溶液中的极化行为，发现：碳钢在３％ＮａＣｌ溶液中发生钝化的临界ｐＨ值约为８．０；当ｐＨ＞８．０时，随着ｐＨ值的增大，致钝及维钝电流逐渐变小，点蚀电位逐渐变正．同时发现ＮＨ＋４对碳钢的极化行为有影响．
The polarization behavior of two types of carbon steels in 3% NaCl solution at different pH values was investigated by using the quasi-steady-state polarization method. The critical pH of passivation of carbon steel in 3% NaCl solution was found to be about 8. 0; when pH> 8.0, with the increase of pH, the blunted and blunted currents gradually become smaller and the pitting potentials gradually become positive. It is also found that NH + 4 has an influence on the polarization behavior of carbon steel.