Relationship between thermal expansion coefficient and glass transition temperature in metallic glasses
2008
The thermal expansion coefficients of 13 metallic glasses were measured using a thermo-mechanical analyser. A unique correlation was found between the linear thermal expansion coefficient and the glass transition temperature—their product is nearly constant ∼8.24 × 10 −3 . If one assumes the Debye expression for thermal activation, the total linear thermal expansion up to glass transition temperature ( T g ) is reduced to 6 × 10 −3 , nearly 25% of that at the fusion of pure metals.
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