Analytical expressions for the heat capacities of alkali silicate liquids. [900/sup 0/ to 1800/sup 0/K]
Journal Article
·
· J. Am. Ceram. Soc.; (United States)
The available thermochemical data for silicate liquids and glasses indicate that the customary assumption of heat-capacity additivity is not valid, particularly for liquid silicates near 1000 K. Estimates are obtained for the heat capacities of KO/sub 0/ /sub 5/-SiO/sub 2/, NaO/sub 0/ /sub 5/-SiO/sub 2/, and CaO-SiO/sub 2/ liquids. The excess heat capacity of mixing of alkali silicates at 1000 K is: C/sub p//sup e/ = 8.0X/sub KO0.5/X/sub SiO2/ + 6.8X/sub NaO0.5/X/sub SiO2/ in units of cal mol/sup -1/ K/sup -1/. Analytical expressions are given for C/sub p//sup e/ for KO/sub 0/ /sub 5/-NaO/sub 0/ /sub 5/-SiO/sub 2/ and NaO/sub 0/ /sub 5/-CaO-SiO/sub 2/ liquids at 900 to 1800 K.
- Research Organization:
- Montana State Univ., Bozeman
- OSTI ID:
- 6335883
- Journal Information:
- J. Am. Ceram. Soc.; (United States), Journal Name: J. Am. Ceram. Soc.; (United States) Vol. 62:3-4; ISSN JACTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CLEAVAGE
CRYSTAL STRUCTURE
FLUIDS
GLASS
LIQUIDS
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POTASSIUM COMPOUNDS
POTASSIUM OXIDES
SILICON COMPOUNDS
SILICON OXIDES
SODIUM COMPOUNDS
SODIUM OXIDES
SPECIFIC HEAT
THERMODYNAMIC PROPERTIES
VISCOSITY
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CLEAVAGE
CRYSTAL STRUCTURE
FLUIDS
GLASS
LIQUIDS
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POTASSIUM COMPOUNDS
POTASSIUM OXIDES
SILICON COMPOUNDS
SILICON OXIDES
SODIUM COMPOUNDS
SODIUM OXIDES
SPECIFIC HEAT
THERMODYNAMIC PROPERTIES
VISCOSITY