Electrochemical and surface studies on the passivity of a dental Pd-based casting alloy in alkaline sulphide solution
作者： Kazuhiko Endo , Hiroki Ohno , Koichi Matsuda , Shukuji Asakura
DOI: 10.1016/S0010-938X(02)00247-0
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摘要: Abstract The corrosion and tarnish behavior of a dental casting Pd–25Ag–18Cu–12Au alloy in 0.1% Na2S solution at 37 °C was investigated using potentiodynamic polarization spectrocolorimetric techniques. surface film characterized by X-ray photoelectron spectroscopy (XPS). This exhibited markedly higher resistance to than did the Ag–20Pd–18Cu–12Au current clinical use. XPS spectra indicated presence thin sulphide composed PdS. It found that PdS is very protective responsible for passivity solution.
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