<研究論文>高銅型アマルガム Lumialloy の電位走査曲線

概要

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The electrochemical behavior of high-copper dental amalgam Lumialloy in various electrolyte solutions were studied by the potential sweep method with sweep rates of 200 and 1 mV/s. The dental amalgam electrode studied was prepared from Lumialloy according to the manufacturers' instructions in regard to mercury-alloy ratio and trituration time and allowed to set over one year. In the absence of chloride ion, the electrochemical behavior of the electrode was relatively inert in 0.05 M sodium sulfate, 0.04 M phosphate (pH 7.0) and 0.05 M sodium hydrogencarbonate solutions. In the presence of chloride ion, the electorde exhibited the current peaks associated with reduction of oxidation products of copper and tin in the amalgam. These reactions of chloride ions to the metals were inhibited by phosphate or hydrogencarbonate. The reduction current of dissolved oxygen on the elctrode was observed by stirring the solution at a sweep rate of 1 mV/s in the potential region less nobel than -0.45 V (SCE).
日本大学の論文
2002-12-25