Glass, Volume 17Minoru Tomozawa, Robert Heward Doremus |
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Page 5
... indicated that helium solubility decreases in the order SiO2 > B2O3 > GeO2 . These studies ( Shelby , 1973d , 1974a ) have also indicated that thermal history can substantially alter gas solubility . Annealing of vitreous boric oxide ...
... indicated that helium solubility decreases in the order SiO2 > B2O3 > GeO2 . These studies ( Shelby , 1973d , 1974a ) have also indicated that thermal history can substantially alter gas solubility . Annealing of vitreous boric oxide ...
Page 19
... indicated that the permeability K was given by K = $ DS ( 32 ) where is the fugacity coefficient at the experimental pressure and D and S the ideal , or low pressure , values of the diffusivity and solubility , respectively . Since that ...
... indicated that the permeability K was given by K = $ DS ( 32 ) where is the fugacity coefficient at the experimental pressure and D and S the ideal , or low pressure , values of the diffusivity and solubility , respectively . Since that ...
Page 22
... indicates that the free volume of the binary glasses is less than additive , the helium diffusivity is also less than ... indicated that the permeability of a Na2O 3SiO2 glass is increased by substituting K2O for Na2O and de- creased by ...
... indicates that the free volume of the binary glasses is less than additive , the helium diffusivity is also less than ... indicated that the permeability of a Na2O 3SiO2 glass is increased by substituting K2O for Na2O and de- creased by ...
Contents
Solubility Models | 9 |
Effect of Experimental Variables on Gas Mobility in Vitreous Materials | 16 |
Phase Separation and Crystallization | 26 |
Copyright | |
18 other sections not shown
Common terms and phrases
activation energy addition alkali alkali ions alkali silicate glasses annealing atom band bleaching BOHC borate boron borosilicate glass cation Ceram Chem chemical durability components concentration crystallization curve decrease defect centers devitrifiable solder glasses Doremus effect ESR spectra eV band experimental Friebele fused silica glass surface glass systems glasses containing grinding Griscom heat treatment helium hole center hole trapped hydrogen hyperfine immiscibility immiscibility boundary increase indentation irradiation lapping hardness layer measured mole Na₂O Non-Cryst nonbridging oxygen nucleation observed optical absorption oxide glasses oxygen particle PbTiO3 permeability phase separation Phys polishing grains polishing rate powder properties radiation radiation-induced reaction samples Section Shelby shown in Fig silicate glasses SiO2 sodium softening point solder glass composites solubility spectrum spinodal decomposition structure studies Table Takamori thermal expansion coefficient tion Tomozawa U.S. Patent viscosity vitreous silica vitreous solder glass volume loss