Porcelain soft-paste

Reaumur Porcelain. A fritted porcelain ( soft paste ) made from 75% frit, 17% chalk and 8% clay the frit contained 60% Si02 the remainder being K2O, Na20, AI2O3 and CaO. It was first made by a Frenchman, R. A. Reaumur (1683-1757). 

Soft-paste porcelain is one of the most beautiful aehievements of the 18 century, especially in France and England. Designed on the same principle as the Medici porcelain, soft-paste porcelain combines translucidity and intricacy of shapes made possible by the smoothness and plasticity of the paste. A transparent lead glaze made the subtle combinations of colors possible, but it was fragile and easily... 

Soft-paste porcelain Hard-paste pcacelain Tin-glazed ware Jasperware Stoneware... 

If the feldspar and quartz content is increased over that in hard porcelain, soft porcelain is obtained which is fired at 100 to 150°C lower temperatures. Highly plastic clay (ball clay) is added to obtain plastic and easy to work pastes, despite the lower kaolin content. Sanitary porcelains for the manufacture of bathroom articles are soft porcelain articles. 

Soft( paste) porcelain Vitreous china Dense microstnicture (WA<2.0%) Ornamental ceramics, ceramic lahleware. insulators, sanitary components... 

Soft-paste porcelain is porcelain with low clay content that results in a low alumina (AI2O3) content. The most common form of soft-paste porcelain is formed of a paste of white clay and ground glass. This formulation allows a lower firing temperature, but provides a less... 

Mus6e National de C6ramique at Sevres, France. The collection includes examples of early European porcelains including a Medici porcelain bottle made in 1581 the first success in European efforts to produce ware equivalent to Persian and Chinese porcelain. It also contains examples of French soft-paste porcelain as well as earlier ceramics. www.ceramique.conL... 

Soft-paste or Fritted Porcelain. A type of porcelain made from a soft body containing a glassy frit and fired at a comparatively low temperature (1100°C). The most famous soft-paste ware was that produced in the 18th century at the Sevres factory in France, and at Chelsea, Derby, Bow, Worcester and Longton Hall in England. The COMBINED nomenclature (q.v.) States that soft porcelain contains less alumina but more silica and fluxes than hard porcelain. See porcelain. 

Lisboa, pp. 211-215 (b) Kingery, WJ). and Smith, D. (1985) The development of European soft-paste (frit) porcelain. Ancient Technology to Modem Science, voL 1, Ceramics and Civilization, The American Ceramic Sodety, Inc.,... 

Other types of soft-paste porcelains developed (Figure 2.10), particularly in England where the most famous were porcelains containing bone ashes, kaolin and Cornish stone (feldspathic rock used as flux). 

Soft-paste porcelains differ from the above porcelains by their greater translucidity and lower sintering temperature. Chinese porcelains and porcelains for dental implants belong to this category. English porcelains, known as bone china, constitute a particular class. 

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