引用本文:
皇甫淑君, 王佳, 韩霞, 胡杰珍, 郑莹莹. 黄铜-16Mn钢在氯化钠溶液中腐蚀电化学的分布行为[J]. 物理化学学报,
2008, 24(12): 2275-2281.
doi:
10.3866/PKU.WHXB20081221
Citation: HUANGFu Shu-Jun, WANG Jia, HAN Xia, HU Jie-Zhen, ZHENG Ying-Ying. Electrochemical Distribution Behavior of the Galvanic Corrosion of Brass-16Mn Steel Couple in Aqueous NaCl Solution[J]. Acta Physico-Chimica Sinica, 2008, 24(12): 2275-2281. doi: 10.3866/PKU.WHXB20081221
Citation: HUANGFu Shu-Jun, WANG Jia, HAN Xia, HU Jie-Zhen, ZHENG Ying-Ying. Electrochemical Distribution Behavior of the Galvanic Corrosion of Brass-16Mn Steel Couple in Aqueous NaCl Solution[J]. Acta Physico-Chimica Sinica, 2008, 24(12): 2275-2281. doi: 10.3866/PKU.WHXB20081221
黄铜-16Mn钢在氯化钠溶液中腐蚀电化学的分布行为
English
Electrochemical Distribution Behavior of the Galvanic Corrosion of Brass-16Mn Steel Couple in Aqueous NaCl Solution
Abstract:
A scanning microelectrode was used to measure the potential and current distributions on the metal surface of a brass-16Mn steel galvanic couple that was corroded in aqueous NaCl solutions with various concentrations. The potential and current distributions varied with the solution concentration and were also dependent on the distance from the brass-16Mn steel couple joint. These distributions were more symmetrical when the concentration of the solution was higher. The potential polarized greatly and the current density was larger near the couple joint. The potential and current distribution results were confirmed by surface observations of the corroded sample after the immersion test. Experimental results showed that corrosion was concentrated around the joint when solution concentration was low and was distributed more symmetrically as the solution concentration increased.
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Key words:
-
Brass
- / 16Mn steel
- / Micro-electrode
- / Galvanic corrosion
- / Potential distribution
- / Current distribution
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