| 断电流分析测量技术监测钝化膜小孔腐蚀破坏过程 |
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| 引用本文： | 余家康,曹楚南,林海潮.断电流分析测量技术监测钝化膜小孔腐蚀破坏过程[J].腐蚀科学与防护技术,1992,4(3):163-167. |
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| 作者姓名： | 余家康 曹楚南 林海潮 |
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| 作者单位： | 中国科学院金属腐蚀与防护研究所腐蚀科学开放实验室，中国科学院金属腐蚀与防护研究所腐蚀科学开放实验室，中国科学院金属腐蚀与防护研究所腐蚀科学开放实验室 沈阳 110015，沈阳 110015，沈阳 110015 |
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| 摘 要： | 利用建立的断电流暂态测量系统和提出的由-t·dV/dt～lg(t)图判断腐蚀体系时间常数个数和弛豫过程类型的判断方法,定性地确定了钝化膜随时间的变化情况。用这项技术连续监测了20~#碳钢和1Cr18Ni9Ti不锈钢的小孔腐蚀破坏过程。
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| 关 键 词： | 测量技术 钝化膜 小孔腐蚀 时间常数 |
| 收稿时间： | 1992-05-25 |
| 修稿时间： | 1992-05-25 |
STUDY ON PITTING-CORROSION PROCESS OF PASSIVE FILM WITH CURRENT-INTERRUPTION TRANSIENT TECHNIQUE |
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| YU Jiakang,CAO Chunan,LIN Haichao.STUDY ON PITTING-CORROSION PROCESS OF PASSIVE FILM WITH CURRENT-INTERRUPTION TRANSIENT TECHNIQUE[J].Corrosion Science and Protection Technology,1992,4(3):163-167. |
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| Authors: | YU Jiakang CAO Chunan LIN Haichao |
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| Abstract: | Potential decay after interruption of the current in galvanostatic polarization was measured for passivated metallic electrode during pitting corrosion period by using a transient measurement system established by the authors previously. The number of time-constants of the relaxation processes during different stage of pitting corrosion was investigated based on analysing the decay data by plots of-t. dV/dtvs. lg(t). The experimental results for the systems of passivated mild steel and stainless steel electrodes in Chloride solution are in agreement with that obtained by impedance measurements reported previously. |
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| Keywords: | current-interruption passive film pitting corrosion time constant |
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