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Differential Thermal Analysis Above 1200°C.
Author(s) -
NEWKIRK TERRY F.
Publication year - 1958
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.1151-2916.1958.tb13513.x
Subject(s) - differential thermal analysis , liquidus , solidus , pellet , materials science , pellets , spurious relationship , container (type theory) , thermal analysis , thermal , analytical chemistry (journal) , crucible (geodemography) , mineralogy , thermodynamics , metallurgy , chemistry , composite material , computer science , physics , optics , computational chemistry , alloy , chromatography , machine learning , diffraction
Differential thermal analysis techniques and equipment for use at temperatures up to 1550°C. are described. Proper electrical shielding eliminates the spurious effects ordinarily encountered above about 1200°C. For nonvolatile materials a pellet method requiring no container and only 0.1 to 0.2 gm. of sample has been developed. For systems containing volatile components, covered crucibles are used. Examples are given of typical DTA curves obtained from pellets of CaO‐Al 2 O 3 ‐Fe 2 O 3 mixtures. The interpretation of DTA heating curves to give precise solidus and liquidus data is discussed briefly.