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| INVESTIGATION OF THE INFLUENCE OF THE SIZES OF COPPER PARTICLES ON THE CORROSION OF THE Cu/LDPE COMPOSITES IN THE SIMULATED UTERINE SOLUTION BY USING EIS |
| ZHANG Huili; WANG Yun; CAI Shuizhou; XIA Xianping; XIE Changsheng |
| State Key Laboratory of Material Processing and Die & Mould Technology; College of Materials Science and Engineering; Huazhong University of Science and Technology; Wuhan 430074 |
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Abstract The corrosion behavior of Cu/LDPE composites in the simulated uterine solution (SUS) was monitored using electrochemical impedance spectroscopy (EIS). According to the EIS characteristics, the equivalent circuits were established. The electrochemical parameters of the composites and its interface were obtained, including double layer capacitance, charge transfer resistance, Warburg impedance and so on. By comparing the change of interface stats of two composites with time, the influence of copper particles on composites corrsion was discussed. The results indicated that the corrosion rate of nanocomposite is lower than that of microcomposite and there is less deposit on the surface of the nanocomposite. The nanocomposite is a superior material to make new type intrauterine device.
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Received: 19 February 2008
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Corresponding Authors:
ZHANG Huili
E-mail: csxie@mail.hust.edu.cn
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