Structural and mechanical characterization of ZnF2–TeO2–B2O3–Sm2O3 glasses

Wagh, Akshatha and Raviprakash, Y and Kamath, Sudha D (2015) Structural and mechanical characterization of ZnF2–TeO2–B2O3–Sm2O3 glasses. International Journal of Technical Research and Applications (23). pp. 39-45. ISSN 2320-8163

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Abstract

Rare earth samarium doped zinc borate glass system based on 30 ZnF2 – 20 TeO2 – (50-x) B2O3 – x Sm2O3, (where x = 0, 0.5, 1.0, 1.5, 2.0, 2.5 mol%) were prepared. The density of each glass was measured and the molar volume was calculated. Makishima and Mackenzie (M-M) models gave reasonable estimation for different constants of elasticity (Young’s modulus (E), Bulk modulus (K), Shear modulus (S), Poisson’s ratio (ϑ)). Vickers (Hv) indentation tests were performed on the series of glass samples. These connections were used to relate the conventional Hardness (H). Fracture toughness (KIC), Dissociation energy (Gi) and Packing density (Vt) were also investigated. The relationship between Machinability and Brittleness of glass materials were studied. Exposition of the M-M model proved to be good for the constants of elasticity of ZnF2–TeO2–B2O3–Sm2O3 glasses..

Item Type: Article
Uncontrolled Keywords: Vickers indentation, Young’s modulus, Makishima and Mackenzie, Brittleness
Subjects: Engineering > MIT Manipal > Physics
Depositing User: MIT Library
Date Deposited: 16 Oct 2015 11:37
Last Modified: 16 Oct 2015 11:37
URI: http://eprints.manipal.edu/id/eprint/144416

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