Abstracts of the General Sessions of the Japanese Society for Dental Materials and Devices
50th General Session of the Japanese Society for Dental Materials and Devices in conjunction with International Dental Materials Congress 2007
Session ID : PS-04
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Host: The Japanese Society for Dental Materials and Devices

Poster Presentation Competition
Effects of Pd and Pt on Corrosion Behavior of Zr in Simulated Body Fluid
*Yusuke Tsutsumi, Yousuke Takano, Hisashi Doi, Kazuhiko Noda, Takao Hanawa
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Keywords: Zirconium, Corrosion, Alloying Element
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Abstract
Corrosion resistances of Zr based alloys in simulated body fluids were evaluated to clarify the effect of the addition of Pd and Pt. The effect of the heat treatment was also investigated. It was revealed that Pd and Pt are also effective to improve the corrosion resistance of Zr. It is considered that these additive elements changed the property of the passive film and/or the composition of the metal nearest surface subsequent to the selective dissolution of Zr. The remarkable positive shift of the corrosion potential supports this suggestion, and it was confirmed by XPS analysis.
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© 2007 by The Japanese Society for Dental Materials and Devices
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