51093
Accession Number
16615
Title Of Article Chaper
Phase formation in several ceramic subsystems at 600°C-1000°C as a function of oxygen fugacity
Title Of Journal Book
Ceramic Forum International/Berichte der DKG
Volume
60
Pages
259-267
Language Of Text
German
Language Of Summary
English
Literature Type
Serial
Literature Level
Analytic
Abstract
Seventeen mixtures based on a Thessalian clay with or without added MnO<sub>2</sub>, A1<sub>2</sub>O<sub>3</sub>, Fe<sub>2</sub>O<sub>3</sub>, or CaO were fired between 600 and 1000°C (at one-hundred degree intervals). Fired in both oxidizing and reducing atmospheres, the clays were then analyzed by x-ray diffraction. Principal conclusions are that manganese-black decorated pottery was fired in oxidizing or weakly reducing atmospheres, and that the dissociation temperature of calcite is very dependent on furnace atmosphere. Thus any attempt to estimate firing temperatures on the basis of phase assemblages of calcareous ceramics will be subject to significant potential errors. See also 21-850. -- AATA
pub_id
51093