The underglaze basic knowledge

Is a major means of decoration of ceramic, draw all kinds of ornamentation pigment molded dry biscuit, and then cover the transparent glaze with white or other light-colored surface glaze, firing into the kiln at high temperature once. It is characterized by well-preserved color, durable subside. We usually see blue and white porcelain, underglaze red porcelain, ceramic glaze, underglaze five polychrome underglaze ceramics fine classification.
The emergence of polychrome underglaze should be traced back to the late Han Dynasty Three Kingdoms period, but at that time the color of the just to He-color pigment simple place to decorate porcelain, also did not try to draw ornamentation. Real underglaze painted porcelain should appear in the Tang Dynasty. Changsha kiln artisans iron oxide, copper color material in different patterns, plotted on a biscuit or write text, verse, and then applied the green glazed by 1220 ° C to 1270 ° C high temperature firing. Subsequent the Shaanxi Huangbao Yaozhou, Yuyao, Zhejiang Yue kilns also have to follow, from the underglaze widely popular, and repeatedly hit startlingly ambitious. One of the most typical is known to the world as the country porcelain blue and white porcelain.
At present, ceramic archaeological field that blue and white porcelain of the Song Dynasty, some scholars believe that should also earlier, should be at least be traced back to the late Tang Dynasty. Of course, these descriptions paternity archaeological discoveries in kind to be confirmed. 1983 Yangzhou Tangcheng site a number is believed to be specimens of Tang blue and white, but unfortunately too little physical, and lack of complete artifacts have been unearthed. The site database included a the Song YINGQING Kuei jars clear on its neck, leaving an underglaze blue color. Although it is not deliberately draw the pattern, but enough to prove the Song Dynasty fired underglaze blue and white porcelain technically no longer any difficulty.