The powerful intrinsic properties of bone china

In addition to the properties that people can see as thin as paper, transparent as a mirror, sound like a chime, and white as jade, bone china has many inherent properties, which are briefly introduced below. Intrinsic properties of bone china 1: mechanical strength Although bone china belongs to the category of soft porcelain tableware, its mechanical strength is not low. Among traditional chinaware ceramic, it belongs to the stronger porcelain white porcelin dinnerware, and its bending strength is 120-160MPa, which is higher than that of Generally, 80-120MPa of traditional ceramics is 30%-50% higher. Intrinsic properties of bone china 2: thermal stability bone china has a long columnar main crystal phase, high expansion coefficient and large anisotropy, so the thermal stability of traditional bone china is poor. At about 160°C (that is, the heat exchange from 160-20°C in water does not burst once). Although some experts use zirconia toughening to improve the thermal stability of bone china, the products on the domestic market do not apply this technology well, and most products have poor thermal stability. Intrinsic properties of bone china 3: glazed surface hardness Bone china uses frit glaze, which is glazed at a lower temperature (1050-1150℃), so the glaze hardness is lower than that of ordinary ceramics, and the hardness is generally 550-600MPa . Generally, the hardness of the glaze surface can be improved by adding porcelain white porcelin dinnerware powder, zircon powder, etc.

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