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首页> 外文期刊>International Journal of Electrochemical Science >Corrosion Behavior of Carbon Steel in LiBr in Comparison to NaCl Solutions under Controlled Hydrodynamic Conditions
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Corrosion Behavior of Carbon Steel in LiBr in Comparison to NaCl Solutions under Controlled Hydrodynamic Conditions

机译：受控水动力条件下与NaCl溶液相比，LiBr中碳钢的腐蚀行为

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The corrosion behavior of carbon steel AISI 1020 in LiBr in comparison with NaCl aqueous solutionswere studied from polarization curve measurements in a rotating disk electrode under a combination ofsalt concentration and rotation speed of the electrode. Assuming the occurrence of hydrogen evolutionand oxygen reduction as the cathodic counterparts of the iron oxidation under a predetermined kineticmodel, the corresponding kinetic parameters were obtained applying a numerical method toexperimental data. It was found that, despite of the close similarities observed between corrosionbehavior of carbon steel in LiBr, NaCl and the mixture LiBr+NaCl, there are distinct differences inkinetics for partial reactions. Some relevant aspects are the significant differences for iron oxidationand hydrogen evolution in the kinetics parameters that indicates higher kinetic rate for LiBr incomparison with NaCl solutions. This can be related with morphological attributes of the pits. Foroxygen reduction the fluid dynamics regime and transport properties of the electrolyte of each saltsolution are the main factors affecting the oxygen kinetic behavior.
机译：结合盐浓度和电极转速，通过旋转圆盘电极的极化曲线测量研究了碳钢AISI 1020在LiBr中与NaCl水溶液的腐蚀行为。假定在预定的动力学模型下发生了析氢和氧​​还原反应，作为铁氧化的阴极对应物，采用数值方法对实验数据进行了计算，得到了相应的动力学参数。已发现，尽管观察到碳钢在LiBr，NaCl和LiBr + NaCl混合物中的腐蚀行为之间具有相似的相似性，但对于部分反应，其墨水动力学存在明显差异。一些相关方面是动力学参数中铁氧化和氢释放的显着差异，这表明LiBr与NaCl溶液相比动力学速率更高。这可能与凹坑的形态属性有关。减少氧气的流动性和每种盐溶液的电解质的输送特性是影响氧气动力学行为的主要因素。

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