Use of natural raw material for the production of photochromic glasses
The authors investigated the possibility of using natural raw materials as replacements for soda and alumina for obtaining photochromic glasses and to determine their properties. Glasses of the sodium aluminoborosilicate system were studied. The characteristics of the batches and some of the properties of the glasses are given in a table. Sodium oxide was added to batches Nos. 1 and 2 as soda or borax. Composition Nos. 3, 4, and 5 were prepared using acid, basic, and neutral rocks by means of which the oxides of sodium and aluminum were added. The glasses were synthesized in SiC-heater furnaces. The differential thermal analysis of compositions Nos. 1 and 5 showed that the presence of natural materials leads to the formation of a liquid phase at lower temperatures which helps to intensify the processes of silicate- and glass-formation.
- Research Organization:
- D.I. Mendelev Moscow Chem-Engineering Institute
- OSTI ID:
- 5144607
- Journal Information:
- Glass Ceram. (Engl. Transl.); (United States), Vol. 42:12
- Country of Publication:
- United States
- Language:
- English
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32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
FURNACES
ENERGY EFFICIENCY
GLASS
DIFFERENTIAL THERMAL ANALYSIS
MATERIAL SUBSTITUTION
PHOTOCHROMIC MATERIALS
RAW MATERIALS
CHEMICAL COMPOSITION
METALLURGICAL EFFECTS
ALUMINIUM OXIDES
BORAX
BORIC ACID
BORON OXIDES
CHEMICAL FEEDSTOCKS
OPACITY
SODIUM CARBONATES
SODIUM OXIDES
ALKALI METAL COMPOUNDS
ALUMINIUM COMPOUNDS
BORATES
BORON COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
EFFICIENCY
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MATERIALS
OPTICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SODIUM COMPOUNDS
THERMAL ANALYSIS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication
320303 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes