|Thermal Expansion, Composition and Structure of GlassPART - I
|PRANAB KUMAR GUPTA AND SACHCHIDANANDA KUMAR
Pages : 37-46
DOI : 10.1080/0371750X.1963.10855445
|Thermal expansion and composition of glass are correlated by the equation :
~X = :E a; c;, a; being the additive constant /or the ith oxide and c; the concentration
of the ith oxide in gms per cc. of glass. The additive /actors /or the alkali
oxides, alkaline-earth oxides, MnO, ZnO. PbO, BaO, B20a. Al203, Si02 and Ti02
have been evaluated.
The /actors due to silica and the alkali oxides take three different sets of values
depending on the ratio, (non-bridging oxygen) : (silicon) in glass being (i) less than
0.5, (ii) between 0,5 to 1.0, and (iii) greater than 1.0. For other oxides only one
set of /actors holds good /or all the compositions. The equation has been shown to
be useful /or calculating thermal expansion of a wide variety of .IJlasses.
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