Corrosion resistance evaluation of Pd-free Ag-Au-Pt-Cu dental alloys
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概要
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The corrosion resistance of nine experimental Pd-free Ag-Au-Pt-Cu dental alloys in a 0.9% NaCl solution was investigated using cyclic voltammetry (CV), optical microscopy, and scanning electron microscopy (SEM). CV measurements revealed that the breakdown potential (Ebd) and zero current potential (Ezc) increased with increasing Au/(Au+Ag) atomic ratio. Thus, the Au/(Au+Ag) atomic ratio, but not the Cu content, influenced the corrosion resistance of Ag-Au-Pt-Cu alloys. After the forward scan of CV, both optical and scanning electron microscope images showed that in all the experimental alloys, the matrix phase was corroded but not the second phase. From corrosion resistance viewpoint, the Ag-Au-Pt-Cu alloys seemed to be suitable for clinical application.
- 2011-03-01
著者
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FUJITA Takeshi
Department of Dental and Biomedical Materials Science, Unit of Basic Medical Sciences, Graduate Scho
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久恒 邦博
長崎大学大学院医歯薬学総合研究科生体材料工学分野
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久恒 邦博
長崎大学 大学院医歯薬学総合研究科
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Sawase Takashi
Department Of Applied Prosthodontics Graduate School Of Biomedical Sciences Nagasaki University
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Sawase Takashi
長崎大学 医歯薬学総合研究科摂食機能回復診断治療学
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Sawase Takashi
長崎大学 大学院医歯薬学総合研究科健美補綴学
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Shiraishi Takanobu
Division Of Dental And Biomedical Materials Science Graduate School Of Biomedical Sciences Nagasaki
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Shiraishi Takanobu
Department Of Dental And Biomedical Materials Science Unit Of Basic Medical Sciences Graduate School
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Shiraishi Takanobu
Department Of Dental And Biomedical Materials Science Graduate School Of Biomedical Sciences Nagasak
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Takuma Yasuko
Department Of Dental And Biomedical Materials Science Unit Of Basic Medical Sciences Graduate School
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Shiraishi Takanobu
Department Of Dental Materials Science Nagasaki University School Of Dentistry
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Tanaka Y
Sanyo Electric Co. Ltd. Gifu‐ken Jpn
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Tanabe Yasuhiko
Division Of Electronics And Information Engineering Graduate School Of Engineering Hokkaido Universi
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Hisatsune Kunihiro
Department Of Dental And Biomedical Materials Science Unit Of Basic Medical Sciences Graduate School
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Hisatsune Kunihiro
Department Of Developmental And Reconstructive Medicine Division Of Dental And Biomedical Materials
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Takuma Y
Department Of Dental And Biomedical Materials Science Unit Of Basic Medical Science Graduate School
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Fujita Takeshi
Department Of Dental And Biomedical Materials Science Unit Of Basic Medical Science Graduate School
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Fujita Takeshi
Department Of Chemistry Graduate School Of Pure And Applied Sciences University Of Tsukuba
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Fujita Takeshi
Department Of Applied Physics Osaka City University
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