C. Wang et al., STRUCTURAL AND ELEMENTAL ANALYSIS ON THE NANOCRYSTALLINE SNO2 IN THE SURFACE OF ANCIENT CHINESE BLACK MIRRORS, Nanostructured materials, 5(4), 1995, pp. 489-496
There were two sorts of black mirrors in ancient China: Heiqigu and co
mmon black mirrors (CBM). Their surface layers of about 100 mu m thick
ness were studied by XRD, HREM, and Raman spectrometry. It was proved
that the layers were mainly composed of nanometer-sized particles of S
n-1-x(CuFePbSi)(x)O-2 (about 5 nm) with cassiterite structure. These r
esults are of interest for further investigation into the corrosion-re
sisting property and formation mechanism of the nanometer structure.