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| Influence of Serum Albumin on Copper Corrosion in Simulated Uterine Fluids |
| Jianjun Zhu;;;; |
| 中科院上海冶金研究所 |
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Abstract For more knowledge of the performance of copper-bearing intrauterine devices (CuIUD), corrosion behavior of copper was examined in a simulated utcrine fluid containing serum albumin. Electrochemical polarization resistance measurements indicated that over the range of pH and desolved oxygen concentration under study the presence of serum albumin always increases the corrosion rate and the latter fluctuates according to the albumin levels. Its addition initially increased the corrosion rate, but the higher albumin level resulted in somewhat suppression of copper corrosion. Both X-Ray Diffraction(XRD0 analysis and cathodic reduction of surface film showed that, at a lower albumin concentration (<1g/L),only cuprous oxide was formed on the copper-substrated surface; however, a higher albumin concentation(>1g/L)suppressed the formation of cuprous oxide. The presence of albumin shifted the corrosion potential of copper towards negative. It could be inferred that the albumin accelerated the anodic process of copper and hence enhanced its corrosion.
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Received: 26 August 1999
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Corresponding Authors:
Jianjun Zhu
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