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| AN INVESTIGATION ON CORROSION BEHAVIOUR OF COPPER IN SIMULATED UTERIUE FLUID |
| Zhang Chengdian;Xu Naixin; Lu Jufang;Ding Cuihong(Shanghai Institute of Metallurgy;Chinese Academy of Sciences)Yang Bingyan(The International Peace Maternity and Child Health Hospital of the Chinese Welfare Institute) |
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Abstract Corrosion behaviour of copper in simulated uterine fluid was investigated by electrochemical and chemical means. Both cathodic reduction of surface film and chemical analysis of solution after corrosion testing proved that the percentage of ionic copper in the corrosion products varied with the pH level of the fluid. About one-third of the total amount of the corroded copper was soluble at pH 7. The share of the soluble products increassed significantly with decreasing pH. In order to examine the effect of oxygen dissolved in the test fluid, the instantaneous corrosion rates under different oxygen pressures were determined using polarization resistance method. A maximum of corrosion rate was observed at a certain oxygen pressure. They were 0.12 atm for pH 7 and 0.06 atm for pH 8, respectively. Based on the variation of the natural corrosion potential of copper with environmentlal pH, the corrosion process was interpreted using E-pH diagram for Cu-Cl-H2O system.
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Received: 25 August 1995
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Cite this article:
Zhang Chengdian;Xu Naixin; Lu Jufang;Ding Cuihong(Shanghai Institute of Metallurgy;Chinese Academy of Sciences)Yang Bingyan(The International Peace Maternity and Child Health Hospital of the Chinese Welfare Institute). AN INVESTIGATION ON CORROSION BEHAVIOUR OF COPPER IN SIMULATED UTERIUE FLUID. J Chin Soc Corr Pro, 1995, 15(4): 261-266.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1995/V15/I4/261
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| 1张承典,徐乃欣,杨秉炎．生殖与避孕,1994,14(3):1632张承典,徐乃欣,陆菊芳,丁翠红,杨秉炎．生殖与避孕,1995,15(1):283KosonenA．FertilityandSterility,1978,30(1):594LewisKN,ArcherRD．Contraception,1977,15(1):935KosonenA．inMedicatedIntrauterineDevices,HafezandOs,vanWAA,edited,MartinusNijhottPress,1981;p22-296杨熙珍,杨武．金属腐蚀电化学热力学电位-pH图及其应用,北京:化学工业出版社,1991,p357金碧华,黄祝玲,周建德．生殖与避孕,1983,3(3):32 |
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