温度对国产核级316L不锈钢在加Zn水中电化学腐蚀性能的影响*
刘侠和， 男， 1984年生， 博士生
收稿日期: 2013-07-16
修回日期: 2013-07-16
网络出版日期: 2014-01-11
基金资助
* 国家自然科学基金项目51371174, 国家科技重大专项课题项目2011ZX06004-017以及国家重点基础研究发展计划项目2011CB610505资助
EFFECTS OF TEMPERATURE ON LECTROCHEMICAL CORROSION OF DOMESTIC NUCLEAR-GRADE 316L STAINLESS STEEL IN Zn-INJECTED AQUEOUS ENVIRONMENT
Received date: 2013-07-16
Revised date: 2013-07-16
Online published: 2014-01-11
Supported by
Supported by National Natural Science Foundation of China (No.51371174), National Science and Technology Major Project (No.2011ZX06004-017) and National Basic Research Program of China (No.2011CB610505)
刘侠和 , 吴欣强 , 韩恩厚 . 温度对国产核级316L不锈钢在加Zn水中电化学腐蚀性能的影响*[J]. 金属学报, 2014 , 50(1) : 64 -70 . DOI: 10.3724/SP.J.1037.2013.00416
The effects of temperature (T) on oxide films for 316L stainless steel (316L SS) in borated and lithiated water without and with Zn injection were investigated by in situ potentiodynamic polarization curves and electrochemical impedance spectra (EIS). The protective property of oxide films in the Zn-free/Zn-injected solution degraded with increasing temperature. With increasing temperature, the structure of the oxide film varied from a single layer to double layers, the Cr-rich oxide layer played a key role on retarding further oxidation. Compared to the Zn-free case, the corrosion rate decreased significantly in the Zn-injected solution due to the formation of compact Zn-bearing oxide films, but the instinct growth mechanism of the oxide films remained unchangeable. The solubilities and structure model of oxides were proposed to discuss the formation mechanism of oxide films on 316L SS in the hydrothermal solution.
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