Electrochemical characterization of nitinol in phosphate-buffered saline

被引：0
|
作者：
Pound, B. G. [1 ]
机构：
[1] Exponent, Menlo Pk, CA USA
来源：
MEDICAL DEVICE MATERIALS III: PROCEEDINGS FROM THE MATERIALS & PROCESSES FOR MEDICAL DEVICES CONFERENCE 2005 | 2006年
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D O I：
暂无
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
The effect of potential and surface condition on the corrosion behavior of nitinol in phosphate-buffered saline was examined using electrochemical impedance spectroscopy. Tests were performed on mechanically polished and electropolished nitinol wire at the corrosion potential and various anodic potentials. The impedance data were analyzed using equivalent circuit models to evaluate the capacitive and resistive components of the surface oxide. Considerable differences were observed in the impedance components between the two surface conditions. In addition, the components exhibited a marked dependence on potential. These effects were interpreted in terms of surface analytical results from previous studies on the oxide composition.
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页码：202 / 207
页数：6
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