Effect of Bi2O3 on structure and wetting studies of Bi2O3-ZnO-B2O3 glasses |
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Authors: | Feng He Jun WangDawei Deng |
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Affiliation: | School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China |
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Abstract: | Glasses with different Bi2O3 contents (37-42 mol%) have been prepared by conventional melt quench technique. The IR and Raman studies indicate that these glasses are made up of BiO6], BiO3], BO3] and BO4] basic structural units. The vibrations of BiO3] and BO3] become stronger as the content of Bi2O3 increases, which makes glass structure loosened. Viscosity of the glasses was measured by using a Rheotronic III paralleled plate rheometry, which shows that the viscosity of glass samples decreased when the content of Bi2O3 increased at the same temperature (400-460 °C). The temperature range which suits for glasses sealing was calculated by using the approximation of Arrhenian behaviour. The wetting performance of Bi2O3-ZnO-B2O3 glasses was described by using high-temperature microscope, which also proves that the structure of investigated Bi2O3-ZnO-B2O3 glasses become loosened due to the increasing of the content of Bi2O3. |
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Keywords: | Bi2O3-ZnO-B2O3 system glasses Structure Viscosity Wetting |
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