Blue and white and underglaze red were first used, and in recent years they have been made into red, yellow, cyan, green, black, gray and brown.
Overglaze pigments only need to withstand the temperature of 600 ~ 800℃, so there are many varieties and rich colors. In addition, there are liquid pigments, such as golden water, used for over-glaze decoration. They are made by synthesizing sulfurized balsam from metal and organic matter, and then adding organic solvent. After 70' s, a kind of high-temperature fast-burning pigment (in-glaze color) was developed. The color burning temperature is1100 ~1260℃, the color burning time is 35 ~ 120 minutes, and the color tone is also rich.
Extended data:
Glaze red:
One of the underglaze varieties. Taking copper oxide as the coloring element, it is painted on the porcelain tire, glazed, baked at high temperature, red on white background and red under glaze, hence the name.
It began in Jingdezhen kiln in Yuan Dynasty. The development of underglaze red porcelain has gone through two main stages:
The first stage is from the appearance of underglaze red in Yuan Dynasty, to the peak in Xuande period in Ming Dynasty, to the decline in the middle of Ming Dynasty, and even to the end of production. At the end of the Ming Dynasty, folk kilns began to try to fire underglaze red porcelain, but most of them were impure in color.
In the second stage, production resumed from the Kangxi Dynasty in the Qing Dynasty, reached its peak in the Yongzheng Dynasty, and then gradually declined.
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