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The Chinese ancient bronze black mirror“Hei-Qi-Gu”is famous for its black colour,brightsurface and anti-corroding property.In the present work,methods of SEM,IR,EPMA,Memhrane-XRD,and AFM were employed to detect the composition and structure of several pieces of Hei-Qi-Gu fragments.Itwas found that after casting,the surface of the bronze mirror was treated by a special process,and most ofCu was moved away while Sn and Si were rich in the surface layer.The oxides SnO_2 and SiO_2 on the surfacein a very small particle size are particularly stable and they protect the bronze alloy successfully.The surface layer and the transition layer have been dissected mainly,and some important informa-tion has been obtained.The special treating process of the mirror surface is searched and discussed.
The Chinese ancient bronze black mirror “Hei-Qi-Gu ” is famous for its black color, brightsurface and anti-corroding property. The present work, methods of SEM, IR, EPMA, Memhrane-XRD, and AFM were employed to detect the composition and structure of several pieces of Hei-Qi-Gu fragments. Itwas found that after casting, the surface of the bronze mirror was treated by a special process, and most of Cu was moved away while Sn and Si were rich in the surface layer.The oxides SnO 2 and SiO 2 on the surface of a very small particle size are particularly stable and they protect the bronze alloy successfully. The surface layer and the transition layer have been dissected mainly, and some important informa- tion has been obtained. special treating process of the mirror surface is searched and discussed.