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FUNDAMENTAL STUDY OF CLAY: III, CASTING AS A BASE‐EXCHANGE PHENOMENON *
Author(s) -
Johnson A. L.,
Norton F. H.
Publication year - 1942
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.1151-2916.1942.tb14314.x
Subject(s) - mold , porosity , casting , slip (aerodynamics) , materials science , yield (engineering) , ion exchange resin , ion exchange , metallurgy , aluminium , composite material , mineralogy , ion , chemistry , inorganic chemistry , engineering , organic chemistry , aerospace engineering
A bstract Specimens of commercial casting slip were cast in plaster molds, porous bisque molds, and porous bisque molds treated with calcium and aluminum chloride. A qualitative determination of the ion serving in the exchange position is possible by the evaluation of the yield value of the cast specimen. The results on a series of tests indicate that casting clayware may be carried out by one of two processes, namely, mechanical water removal by the porous mold or by an exchange reaction between the ions of the slip and those of the mold; combinations of both processes may also occur. A detailed description of both methods, including practical applications, is given.