| 脉冲频率和电流密度对钢板表面洁净度和渗氢的影响 |
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| 引用本文： | 郑天亮,杨青.脉冲频率和电流密度对钢板表面洁净度和渗氢的影响[J].中国航空学报,2003,16(2):123-128. |
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| 作者姓名： | 郑天亮 杨青 |
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| 作者单位： | College of Materials Science and Engineering，Beijing University of Aeronautics and Astronautics，College of Materials Science and Engineering，Beijing University of Aeronautics and Astronautics Beijing100083，China，Beijing100083，China |
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| 摘 要： | 讨论了双向脉冲电解清洗中脉冲频率及电流密度对钢板表面洁净度和渗氢的影响。适中的频率(5Hz)比更高或更低的频率对钢板表面洁净度更有效。提出一种新的用循环伏安曲线评价钢板表面洁净度的方法，它与X射线光电子能谱法测定的钢板表面碳峰的水平相关性非常好。用电解清洗的机理讨论了这一结果。脉冲频率在5～10Hz时比更低频率能更有效的抑制渗氢。使用这一方法可以防止高强钢在电清洗中发生氢脆。
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| 关 键 词： | 脉冲频率 电流密度 钢板 表面洁净度 渗氢 影响 电解清洗 循环伏安曲线 |
| 收稿时间： | 23 December 2002 |
Effect of Pulse Frequency and Current Density on Steel Sheet Cleanliness and Hydrogen Permeation |
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| ZHENG Tian-liang,YANG Qing.Effect of Pulse Frequency and Current Density on Steel Sheet Cleanliness and Hydrogen Permeation[J].Chinese Journal of Aeronautics,2003,16(2):123-128. |
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| Authors: | ZHENG Tian-liang YANG Qing |
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| Institution: | College of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China |
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| Abstract: | The effect of pulse frequency and current density on the effectiveness of biphasic pulse electrocleaning is discussed. Moderate frequency (5Hz) is found to be more effective than lower or higher frequency on steel surface cleanliness. A novel interpretation of cyclic voltammagrams is used to estimate the surface cleanliness. This correlates very well with XPS determination of surface carbon levels. This result is discussed in terms of mechanisms of electrocleaning. Moderate frequency (5\|10Hz) is more effective than lower frequency for inhibiting hydrogen permeation. This method can prevent hydrogen brittleness on the electrocleaning high\|strength steel. |
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| Keywords: | pulse electrocleaning cyclic voltammagrams hydrogen permeation hydrogen brittleness |
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