Selective Dissolution of Ni from Nitinol for Increasing the Biocompatibility

机译：从镍钛诺中选择性溶解镍以提高生物相容性

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Different electrochemical surface treatments were applied to the Ni-Ti shape memory alloy and to pure Ti and Ni for comparison. Electrolytes containing the halogen ions F~- and Cl~- produced localized corrosion on Ni-Ti. However, by Rutherford backscattering spectroscopy and scanning electron microscopy a loss of nickel and morphological modifications of the surface were verified for Ni-Ti polarized in 1M H_3PO_4 or 1M Na_2SO_4. Corrosion resistance improvement in Hank's solution was observed however, for the Ni-Ti alloy polarized at 3V in 1M H_3PO_4.

机译：为了比较，对Ni-Ti形状记忆合金以及纯Ti和Ni进行了不同的电化学表面处理。含卤素离子F〜-和Cl〜-的电解质在Ni-Ti上产生局部腐蚀。然而，通过卢瑟福反向散射光谱法和扫描电子显微镜，对于在1M H_3PO_4或1M Na_2SO_4中极化的Ni-Ti，证实了镍的损失和表面形态的改变。然而，对于在1M H_3PO_4中以3V极化的Ni-Ti合金，在Hank溶液中观察到了耐腐蚀性的提高。

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《Electrochemical Society(ECS) Meeting;Symposium on Surface Treatments for Biomedical Applications; 20071007-12;20071007-12; Washington,DC(US);Washington,DC(US)》|2007年|P.29-38|共10页
会议地点 WashingtonDC(US);WashingtonDC(US)
作者
D. A. Dalla Corte; L. F. P. Dick;
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作者单位

Department of Metallurgy, Universidade Federal do Rio Grande do Sul, Av. Bento Goncalves 9500, 91501-970, Porto Alegre, Brazil;

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正文语种 eng
中图分类生物医学工程;
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Selective Dissolution of Ni from Nitinol for Increasing the Biocompatibility

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