Corrosion Resistance and Surface Characterization of Electrolyzed Ti-Ni Alloy
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概要
- 論文の詳細を見る
Ti-Ni alloy has been increasingly applied to medical and dental devices, such as coronary stents and orthodontic wires. This alloy contains nickel, which is known to give rise to cytotoxicity, metal allergy, and carcinogenicity. Therefore, the purpose of this study was to improve the corrosion resistance of Ti-Ni alloy by electrolytic treatment, whereby investigation was carried out using different acidic electrolyte compositions. As a result, specimens electrolyzed with lactic acid, water, and glycerol were found to show higher corrosion potential and release lower amount of titanium and nickel ions than mechanicalpolished specimens (p<0.05). With the electrolytic treatment, nickel concentration in the surface oxide layer of Ti-Ni alloy decreased, and the thickness of the surface oxide layer increased. Based on the results of this study, it was shown that electrolytic treatment with suitable electrolyte could improve the corrosion resistance of Ti-Ni alloy, which is effective to produce medical and dental devices that utilize shape memory effect or superelasticity with better biocompatibility.
- 日本歯科理工学会の論文
著者
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Doi Hisashi
Institute Of Biomaterials And Bioengineering Tokyo Medical And Dental University Tokyo Medical And D
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Doi Hisashi
Division Of Metallurgy Institute For Medical And Dental Engineering Tokyo Medical And Dental Univers
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HANAWA Takao
Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University
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YONEYAMA Takayuki
Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University
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Fukushima Osamu
Institute Of Biomaterials And Bioengineering Tokyo Medical And Dental University
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Hanawa T
Institute Of Biomaterials And Bioengineering Tokyo Medical And Dental University Tokyo Medical And D
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Hanawa Takao
Institute For Biomaterials And Bioengineering
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Yoneyama T
Institute Of Biomaterials And Bioengineering Tokyo Medical And Dental University
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Yoneyama Takayuki
Nihon Univ. School Of Dentistry Tokyo Jpn
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Yoneyama Takayuki
Institute Of Biomaterials And Bioengineering Tokyo Medical And Dental University
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Doi Hisashi
Institute Of Biomaterials And Bioengineering Tokyo Medical And Dental University
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- PREFACE
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