Study on additives assisted reduction of celadons

Celadons were prepared in the reducing atmosphere with purple clay and other natural elements. Different concentrations of silicon powder, silicon carbide, and tin dioxide were used as auxiliary reducing agents to investigate their effects on celadons. The results showed that the brightness value of celadons increased and subsequently declined when Si and SiC were introduced, and the glaze color gradually shifted from yellowishgreen to bluish-green. On the other hand, samples with SnO2 had an opaque yellowish-green tint. According to XPS data, the reducing ability of SiC was added, followed by Si and SnO2. The structural colors of samples containing Si, SnO2, and without reducing agents were weak. Otherwise, celadons with SiC could yield blue structural colors conforming to the "Rayleigh scattering" effect. In conclusion, the reducing atmosphere raised the quantity of Fe2+ in celadons, resulting in blue colors, and additives created a variety of chemical and structural color coupling effects, leading to different aesthetic effects.