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NOTE ON THE EFFECTS OF FIRING TEMPERATURES ON THE STRENGTH OF FIRECLAY AND STONE WARE BODIES 1
Author(s) -
Schurecht H. G.
Publication year - 1921
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1921.tb18667.x
Subject(s) - shrinkage , porosity , cone (formal languages) , materials science , composite material , mineralogy , geology , mathematics , algorithm
The cross breaking strengths, porosities and shrinkages of fire‐clay and stoneware bodies were determined after firing to different temperatures. It was found that with one exception, maximum strength was developed by firing to cone 8, even when porosity and shrinkage data showed the bodies to be over or underfired at this temperature. The cause of weakening above cone 8 may be due to the formation of sillimanite. Bodies which develop maximum shrinkage and minimum porosity at cone 8 have a greater ratio of fired strength to dry strength when fired to cone 8, than those which are under or overfired at cone 8.