Corrosion Characteristics of Ferric and Austenitic Stainless Steels for Dental Magnetic Attachment
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概要
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The corrosion behaviors of four ferric stainless steels and two austenitic stainless steels were examined in a simulated physiological environment(0.9% NaCl solution)to obtain basic data for evaluating the appropriate composition of stainless steels for dental magnetic attachments. The corrosion resistance was evaluated by electrochemical techniques and the analysis of released metal ions by atomic absorption spectrophotometry. The surface of the stainless steels was analyzed by X-ray photoelectron spectroscopy(XPS). The breakdown potential of ferric stainless steels increased and the total amount of released metal ions decreased linearly with increases in the sum of the Cr and Mo contents. The corrosion rate of the ferric stainless steels increased 2 to 6 times when they were galvanically coupled with noble metal alloys but decreased when coupled with commercially pure Ti. For austenitic stainless steels, the breakdown potential of high N-bearing stainless steel was approximately 500 mV higher than that of SUS316L, which is currently used as a component in dental magnetic attachments. The enriched nitrogen at the alloy / passive film interface may be effective in improving the localized corrosion resistance.
- 日本歯科理工学会の論文
著者
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Endo Kazuhiko
Division Of Biomaterials And Bioengineering Department Of Oral Rehabilitation School Of Dentistry He
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Endo Kazuhiko
Silicon Systems Research Laboratories Nec Corporation
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Endo Kazuhiko
Department Of Dental Materials Science School Of Dentistry Health Sciences University Of Hokkaido
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OHNO Hiroki
Department of Dental Materials Science, School of Dentistry, Health Sciences University of Hokkaido,
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SUZUKI Masahiro
Department of Cardiology, National Hospital Organization Saitama Hospital
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Endo Kazuhiko
Department Of Dental Materials Science Health Sciences University Of Hokkaido School Of Dentistry
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Endo Kazuhiko
Department Of Dental Materials Science School Of Dentistry Health Science University Of Hokkaido
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Ohno Hiroki
北海道医療大学 歯学部歯科矯正学
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Ohno H
Division Of Biomaterials And Bioengineering Department Of Oral Rehabilitation School Of Dentistry He
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Ohno Hiroki
Department Of Biology Kyoto University Of Education
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Suzuki Masahiro
Department Of Dental Materials Science School Of Dentistry Health Science University Of Hokkaido
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Suzuki Masahiro
Department Of Anesthesiology Akita University School Of Medicine
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