Application of low-temperature plasma for the removal of copper chloride layers on bronze Wares

Abstract Archaeological objects based on copper alloys (such as bronze wares) usually suffer from “bronze disease” that results the existence of CuCl surfaces. The surface-coating Cu 2 (OH) 3 Cl can release − and lead to further corrosion during storage procedure. central aim work is verity effectiveness low-temperature radio-frequency (RF) plasma for removal wares. In this work, patina were synthesized by a simple solution method. chemical aesthetic features before after treatment characterized using optical microscopy (OM), SEM-EDS, XRD, XPS. show Ar-H could reduce efficiently, which achieves pleasing esthetics well removes chlorine (Cl atomic ratio decrease 46.0 3.6%). For Cl, air exhibit better performance compared treatment, judging effect 14.8 3.3%).