| Electrochemical behavior of SUS316L stainless steelafter surface modification |
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| 引用本文： | 梁成浩,郭亮,陈婉,刘敬肖. Electrochemical behavior of SUS316L stainless steelafter surface modification[J]. 中国有色金属学会会刊, 2003, 13(2) |
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| 作者姓名： | 梁成浩 郭亮 陈婉 刘敬肖 |
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| 作者单位： | School of Chemical Engineering，Dalian University of Technology，School of Chemical Engineering，Dalian University of Technology，School of Chemical Engineering，Dalian University of Technology，School of Chemical Engineering，Dalian University of Technology Dalian 116012，China，State Key Laboratory for Corrosion and Protection，Institute of Metal Research，Chinese Academy of Sciences，Shenyang 110016，China，Dalian 116012，China，Dalian 116012，China，Dalian 116012，China |
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| 摘 要： | 1 INTRODUCTIONAsametallicimplantdevice ,coronarystentsneedgoodmechanicalperformance ,wonderfulanti corrosionbehavioraswellasbloodcompatiblecapabil ityforinvivoenvironments.Nowadaysthestentsaremadebyausteniticstainlesssteel,cobalt basedalloy ,titaniumanditsalloy[1] .Amongthesematerials ,SUS316Lstainlesssteelisthemostcommonusedonebecauseofitscheapcost ,goodmechanicalbehaviorandlowcorrosionrate .Itdoeshowever ,frequentlycorrodeinthebody ,andreleasesomenoxiousionssuchasCr,Ni,Moions .Theio…
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Electrochemical behavior of SUS316L stainless steel after surface modification |
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| LIANG Cheng hao ,,GUO Liang ,CHEN Wan ,LIU Jing xiao. Electrochemical behavior of SUS316L stainless steel after surface modification[J]. Transactions of Nonferrous Metals Society of China, 2003, 13(2) |
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| Authors: | LIANG Cheng hao GUO Liang CHEN Wan LIU Jing xiao |
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| Affiliation: | LIANG Cheng hao 1,2,GUO Liang 1,CHEN Wan 1,LIU Jing xiao 1 |
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| Abstract: | The surface modification for SUS316L stainless steel was carried out by electroplating Rh, ion beam assisted deposition Ta2O5 and sol-gel-derived TiO2. In Tyrodes stimulated body fluid, the surface modified samples were investigated with electrochemical techniques. The results indicate that the electrochemical stability and dissolution are improved significantly after surface modification. Moreover, as to ion beam assisted deposition Ta2O5 and sol-gel-derived TiO2 film, the metals d orbit electron holes filled up by the oxygen electrons make against the adsorption of hydrogen. Thus the cathode process, which is controlled by the hydrogen reduction, is held back. X-ray diffraction analysis of SUS316L stainless steel after surface modification reveal that each method forms the uniform and compact film on SUS316L stainless steel. These films prevent the dissolving of elements and improve passivation property of the SUS316L stainless steel. |
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| Keywords: | coronary stent stimulated body fluid surface modification electrochemical behavior |
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