AskDefine | Define earthenware

Dictionary Definition

earthenware n : ceramic ware made of porous clay fired at low heat

User Contributed Dictionary

English

Etymology

The first recorded appearance in 1673. Compound of earthen and ware.

Noun

  1. An opaque, semi-porous ceramic made from clay and other compounds.

Translations

References

Extensive Definition

Earthenware is a common ceramic material, which is used extensively for pottery tableware and decorative objects. Although body formulations vary tremendously between countries, and even between individual makers, a generic composition is 25% ball clay, 28% kaolin, 32% quartz, and 15% feldspar. Earthenware is one of the oldest materials used in pottery. While red earthenware made from red clays is very familiar and recognizable, white and buff colored earthenware clays are also commercially available and commonly used.
Earthenware is commonly bisque, or biscuit, fired to temperatures in the range of 1000 and 1150 degrees Celsius (1800 and 2100 degrees Fahrenheit, and glost fired from 950 to 1050°C (1750 to 1925°F). However examples of the the reverse, low biscuit firing and high glost, can also be found: this can be popular with some studio potters where bisque temperatures may be 900 to 1050°C (1650 to 1920°F ) with glost temperatures in the range of 1040 to 1150°C (1900 to 2100°F). The exact temperature will be influenced by the raw materials used and the desired characteristics of the finished ware. The higher firing temperatures are likely to cause earthenware to bloat. After firing the body is porous and opaque with colours ranging from white to red depending on the raw materials used.
Earthenware may sometimes be as thin as bone china and other porcelains, though it is not translucent and is more easily chipped. Earthenware is also less strong, less tough, and more porous than stoneware - but its low cost and easier working compensate for these deficiencies. Due to its higher porosity, earthenware must usually be glazed in order to be watertight.

See also

References

  • An Introduction To The Technology Of Pottery. 2nd edition. P.Rado. Pergamon Press. 1988
  • Whitewares: Production, Testing And Quality Control. W.Ryan & C.Radford. Pergamon Press. 1987
  • Hamer, Frank and Janet. The Potter's Dictionary of Materials and Techniques. A & C Black Publishers, Limited, London, England, Third Edition 1991. ISBN 0-8122-3112-0.
earthenware in Afrikaans: Steengoed
earthenware in German: Steingut
earthenware in Hebrew: חרס
earthenware in Dutch: Aardewerk
earthenware in Dutch Low Saxon: Diggelwark
earthenware in Japanese: 土器
earthenware in Swedish: Stengodslera

Synonyms, Antonyms and Related Words

Kinkozan ware, Leeds pottery, Limoges, Meissen ware, Nabeshima ware, Satsuma ware, Seto ware, appliances, basalt, brassware, china, chinaware, clayware, copperware, crackle, delft, dinnerware, durable goods, durables, enamel, enamelware, faience, fixtures, flatware, glassware, graniteware, hard goods, hardware, hollow ware, housefurnishings, housewares, ironmongery, ironstone, ironware, jasper, jasper ware, kitchenware, luster pottery, majolica, metalware, ovenware, porcelain, silverware, spongeware, sporting goods, stoneware, tableware, terra cotta, tinware, tools and machinery, white goods, white pottery, woodenware
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