Abstract
Temperature and frequency dependencies of velocities and absorption coefficients of ultrasonic waves were measured on molten 33(mol%)Na2O-SiO2 and 33(mol%)K2O-SiO2, and compositional dependencies of ultrasonic velocities were summarized using previous data on molten M2O-SiO2 (M = Li, Na and K) so as to elucidate the relation between acoustic properties and silicate network structures. The velocities and absorption coefficients of ultrasonic waves are identical irrespective of frequencies above ca. 1400 K for 33Na2O·67SiO2 and ca. 1500 K for 33K2O·67SiO2, respectively, while frequency dependencies appear below these temperatures. Frequency dependency stems from the structural relaxation of molten silicates. It has also been found that there is an identical linear relation between the ultrasonic velocities and the molar volumes for these alkali silicates. This indicates that the molar volume is one of the most significant factors affecting the ultrasonic velocity value instead of the iconicity of atomic bonding.
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K. C. Mills: Proc. 3rd Inter. Conf. on Metall. Slags and Fluxes, Inst. Metals, Glasfor, (1989), 229.
K. Nagata, K. Ohira, H. Yamada and K. S. Goto: Met. Mat. Trans. B, 18B (1987), 549.
M. Hayashi, Y. Kitamura and K. Nagata: ISIJ Int., 52 (2012), 1740.
J. O’M. Bockris and E. Kojonen: J. Am. Chem. Soc., 82 (1960), 4493.
V. V. Baidov and L. L. Kunin: Sov. Phys. Dokl., 13 (1968), 64.
T. Maehara, PhD thesis, Tokyo Institute of Technology (2005), 42.
S. L. Webb: Chem. Geol., 96 (1992), 449.
M. Hayashi, Y. Matsuzono and K. Nagata: ISIJ Int., 51 (2011), 689.
H. Bloom and J. O’M. Bockris: J. Phys. Chem., 61 (1957) 515.
V. V. Baidov and L. L. Kunin, Sov. Phys. Dokl., (English Translation) 13 (1968) 64.
M. L. Rivers and I. S. E. Carmichael, J. Geophysical Research, 92 (1987) 9247.
Y. Shiraishi, M. Yamashita, Y. Tokunaga and A. Tanaka, Proc. 8th Inter. Conf. on Molten Slags, Fluxes and Salts, Santiago, Chile, January, CD-ROM (2009).
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© 2016 TMS (The Minerals, Metals & Materials Society)
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Hayashi, M. (2016). Relation between Acoustic Properties and Structures on Molten Alkali Silicates. In: Reddy, R.G., Chaubal, P., Pistorius, P.C., Pal, U. (eds) Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016. Springer, Cham. https://doi.org/10.1007/978-3-319-48769-4_19
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DOI: https://doi.org/10.1007/978-3-319-48769-4_19
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48625-3
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