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Effect of Scratch Size on Hydrogen Permeation Behavior of Zinc Coated Steel during Wet and Dry Corrosion Tests

机译:划痕大小对湿腐蚀试验期间锌涂层钢氢渗透行为的影响

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The influence of scratch size on the hydrogen permeation behavior of Zn coated steel during wet and dry cycle corrosion tests was investigated electrochemically. A size controlled scratch was formed on Zn coated steels with a pulsed YAG laser machining technique. The hydrogen permeation current was observed independent of formed scratch size. The periodic changes of the hydrogen permeation currents following the cyclic changes of the relative humidity were observed. After the tests, the red rust and zinc-hydroxychloride (simonkolleite) were observed at initially placement of NaCl solution. The total amount of permeated current did not proportionally increase with increasing the formed scratch area, indicating that the corrosion products played an important role in the hydrogen permeation behavior during wet and dry corrosion.
机译:电化学研究刮擦涂层尺寸对湿循环腐蚀试验期间Zn涂层钢氢渗透行为的影响。 在Zn涂覆钢上形成尺寸控制的刮刀,具有脉冲YAG激光加工技术。 观察到氢渗透电流与形成的划伤尺寸无关。 观察到相对湿度的环状变化后的氢渗透电流的周期性变化。 测试后,在最初放置NaCl溶液时观察到红色锈和锌 - 氯氧化锌(Simonkolleite)。 随着形成的划痕区域的增加,渗透电流的总量并未成比例地增加,表明腐蚀产物在潮湿和干腐蚀期间在氢渗透行为中发挥着重要作用。

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