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2020•Journal of Physics Conference SeriesOpen access

Room-temperature coefficient of thermal expansion of metals derived from the elastic constants

Н. А. Палий, O. K. Belousov

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Abstract

Abstract Room-temperature coefficients of thermal expansion (CTE), α, of 27 metals and 2 semi-metals (Si and Ge) are derived from elastic constants (Young modulus, shear modulus, Poisson’s ratio) coupled with a Debye treatment of the vibrating lattice. Theoretical values of αcalc show good agreement with the experimental ones.

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Abstract Room-temperature coefficients of thermal expansion (CTE), α, of 27 metals and 2 semi-metals (Si and Ge) are derived from elastic constants (Young modulus, shear modulus, Poisson’s ratio) coupled with a Debye treatment of the vibrating lattice. Theoretical values of αcalc show good agreement with the experimental ones.

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Available abstract

Abstract Room-temperature coefficients of thermal expansion (CTE), α, of 27 metals and 2 semi-metals (Si and Ge) are derived from elastic constants (Young modulus, shear modulus, Poisson’s ratio) coupled with a Debye treatment of the vibrating lattice. Theoretical values of αcalc show good agreement with the experimental ones.

Key concepts: Thermal expansion, Debye model, Shear modulus, Bulk modulus, Materials science, Poisson's ratio, Thermodynamics, Elastic modulus

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