Color glaze of Chinese red glaze

The so-called color glaze, refers to the decorative color of the glaze, in the production of colorless transparent glaze, adding certain metal oxides as coloring agent, under high temperature will show colorful glaze color. Such as China's traditional color glaze, copper oxide as a coloring agent, can be burned sacrificial red, bright red, ruby red, oxblood red and other bright and colorful red glaze; iron oxide as a coloring agent, can be burned, such as bean green, powder green, azure, prune green, such as "a thousand peaks of emerald green" of the green glaze; and cobalt as a coloring agent for the oxides, is burned out of the sky blue, Gemstone blue and other beautiful blue glaze. The same metal oxide due to different content in the glaze, temperature and firing atmosphere, as well as other chemical composition of the glaze, and can show many different colors. For example, the same copper as a coloring agent, in the oxidizing atmosphere presents green, while in the reducing atmosphere presents red. Tang Dynasty Changsha kiln celadon on the kind of green pattern, is copper in the oxidizing atmosphere results. In the late Northern Song Dynasty, the kiln workers in Yuxian, Henan Province, created a strong reduction conditions at a high temperature of 1300 degrees Celsius, and made the copper red, which is the world-famous "Jun red".