Dating royal doulton plates
Eventually, porcelain and the expertise required to create it began to spread into other areas of East Asia.
During the Song Dynasty (960–1279 AD), artistry and production had reached new heights.
The clays used are often described as being long or short, depending on their plasticity.
Some porcelains were more highly valued than others in imperial China.In soil mechanics, plasticity is determined by measuring the increase in content of water required to change a clay from a solid state bordering on the plastic, to a plastic state bordering on the liquid, though the term is also used less formally to describe the ease with which a clay may be worked.Clays used for porcelain are generally of lower plasticity and are shorter than many other pottery clays.is a ceramic material made by heating materials, generally including kaolin, in a kiln to temperatures between 1,200 and 1,400 °C (2,200 and 2,600 °F).The toughness, strength, and translucence of porcelain, relative to other types of pottery, arises mainly from vitrification and the formation of the mineral mullite within the body at these high temperatures.
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Some of the most well-known Chinese porcelain art styles arrived in Europe during this era, such as the coveted blue-and-white wares.