Clay stuff
Tonzeug (also: Sintergut) is an independent ceramic group, whose products sinter during the biscuit firing and unglazed form a dense body.
nature
Due to the high temperatures during firing, the components of the raw material are firmly welded together, and what is known as sintering forms an almost glass-like base mass. As a result, the broken glass becomes very dense and impermeable to water, according to Otto Lueger's lexicon of technology and its auxiliary sciences from 1910, it sucks up to a maximum of 5% water.
groups
The most important main groups of clay tools are:
- Stoneware is colored light to brown depending on the clay used, but not translucent like porcelain. A distinction is made between common stoneware , which is processed without slurry throughout, and fine stoneware whose mass is slurried.
- Porcelain (white clay) is made from white kaolin , quartz and feldspar . A distinction is made between soft and hard porcelain.
See also
- Ceramic (orientational classification of ceramic materials)
Individual evidence
- ^ Pottery , on zeno.org
- ^ Bertram Philipp, Peter Stevens: Grundzüge der Industrielle Chemie , VCH Verlagsgesellschaft mbH, 1987, p. 262, ISBN 3-527-25991-0 .
- ^ Bertram Philipp, Peter Stevens: Grundzüge der Industrielle Chemie , VCH Verlagsgesellschaft mbH, 1987, p. 263, ISBN 3-527-25991-0 .