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首页> 外文期刊>ISIJ international >Simultaneous Measurements of Corrosion Potential and Hydrogen Permeation Current in Atmospheric Corrosion of Steel
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Simultaneous Measurements of Corrosion Potential and Hydrogen Permeation Current in Atmospheric Corrosion of Steel

机译：同时测量钢的大气腐蚀中的腐蚀势和氢渗透电流

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To investigate hydrogen absorption behavior into carbon steel during corrosion in an aqueous sodium chloride (NaCl) droplet, a simultaneous measurement system of the corrosion potential, E _(corr) and hydrogen permeation current, i _(per) was developed using the Kelvin probe (KP) technique and the Devanathan–Stachurski (DS) method, respectively. This system outputs the interrelation between corrosion and hydrogen absorption into steel throughout the drying process of an NaCl droplet. Our results showed that hydrogen absorption into the steel occurred when the E _(corr) shifted in less noble direction under wet conditions, and ceased at a higher potential of E _(corr) when the steel surface dried up. Based on the results of the transients of the i _(per), the amount of hydrogen absorbed during the drying of the NaCl droplet increased with NaCl concentration, which was attributed to the negative shift of the E _(corr). Furthermore, the amount of hydrogen absorbed within one wet-dry cycle changed with the number of cycles, due to the expansion of the corroded area and the formation of iron rust.
机译：为了研究在氯化钠（NaCl）水滴中腐蚀过程中碳钢中的氢吸收行为，同时测量腐蚀电位E_（corr）和氢渗透电流（_ per）分别使用开尔文探针（KP）技术和Devanathan–Stachurski（DS）方法开发。在整个NaCl液滴干燥过程中，该系统将腐蚀和氢吸收之间的相互关系输出到钢中。我们的结果表明，在湿润条件下，当 E _（corr）向不太贵重的方向移动时，会吸收钢中的氢，而当钢表面干燥时，会在较高的电势下停止。 。根据i_per的瞬态结果，NaCl液滴干燥过程中吸收的氢量随NaCl浓度的增加而增加，这归因于e _（_）的负移。 corr）。此外，由于腐蚀区域的扩大和铁锈的形成，在一个干湿循环内吸收的氢量随循环次数而变化。

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