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- W2325249988 abstract "The elastic constants and Vickers hardness of B2O3-PbO glasses have been determined. The data obtained for Vickers hardness, isotropic wave velocities, bulk modulus, shear modulus and Young's modulus are listed in Table I and II together with the density and molar volume. The variation of these data with composition of the glasses are shown in Fig. 1∼3. It can be seen that both the elastic constants and Vickers hardness increase with increasing PbO content up to its maximum value at about 42 mole percent PbO and then decrease; that is, beyond this further addition of PbO produces a softer glass. The increase of the elastic constants and hardness in the composition range of approximately 20∼42 mole percent PbO is interpreted based on the evidences that the four-co-ordinated borons are present and the type of lead-oxygen association becomes more covalent bonding." @default.
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- W2325249988 date "1974-01-01" @default.
- W2325249988 modified "2023-09-27" @default.
- W2325249988 title "Elastic Constants and Vickers Hardness of Lead Borate Glasses" @default.
- W2325249988 doi "https://doi.org/10.2472/jsms.23.128" @default.
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