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Thermal behavior of casting investment during setting
Author(s) -
WAKASA K.,
YAMAKI M.
Publication year - 1995
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1111/j.1365-2842.1995.tb00787.x
Subject(s) - differential scanning calorimetry , differential thermal analysis , materials science , investment (military) , mixing (physics) , investment casting , thermal analysis , gypsum , casting , combustion , thermal , composite material , mineralogy , chemical engineering , thermodynamics , chemistry , mold , organic chemistry , engineering , optics , physics , quantum mechanics , politics , political science , diffraction , law
SUMMARY The aim of this study was to examine the thermal reactions of silica‐sol liquids for mixing investment powders using differential thermal analysis (DTA) and also the setting behaviour of the mixed powders using differential scanning calorimetry (DSC). The silica‐sol liquids showed the appearance of vapourization (around 100°C as a peak temperature) and combustion (200–300°C) in DTA measurement. Mixed silica‐sol investment exhibited the setting behaviour with an exotherm in the DSC measurement representing that greater peak time, setting time and heat in mixed investment than with gypsum‐bonded investment.