Abstract
The model of capillary transport of liquid metals driven by shear stress resulting from the displacement of menisci [J.W. Nowok, Scripta Metal]. Mater. 29, 931 (1993); Acta Metall. Mater. 42, 4025 (1994)] is applicable to liquid-phase sintering of silicate/aluminosilicate glasses. The movement of a liquid phase between adjacent particles is compared with that in capillaries. It appears that the transport property of intergranular melt may be expressed by the viscosity (η) and volume diffusion (D) parameters if mean displacement of menisci is compared with the mean diffusive jump lengths of atoms/molecules (L). This leads to the following relation: (γ/η)Lα = D cap, where α and D cap are a specific permeability and volume diffusion coefficient. The use of this model requires the assumption that the diffusing species are also the viscous flow units, and they can be either atoms or structural units. This assumption seems to be applicable for depolymerized silicate melts if the dominant mass transport is initiated by the diffusion of both nonbridging oxygen and silicon atoms.
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J. W. Nowok, Scripta Metall. Mater. 29, 931 (1993).
J. W. Nowok, Acta Metall. Mater. 42, 4025 (1994).
O-H. Kwon, in Ceramic and Glasses, edited by S. J. Schneider, Jr. (ASM INTERNATIONAL, Materials Park, OH, 1991), Vol. 4, p. 285.
J. W. Nowok, S. A. Benson, M. L. Jones, and D. P. Kalmanovitch, Fuel 69, 1020 (1990).
R. F. Cooper, J. Geophys. Res. 95, 6979 (1990).
A. Navrotsky, K. L. Geisenger, P. McMillan, and G. V. Gibbs, Phys. Chem. Minerals 11, 284 (1985).
N. F. Mott, Philos. Mag. B56, 257 (1987).
L. Ferrari, N. F. Mott, and G. Russo, Philos. Mag. 59, 263 (1989).
S. B. Liu, J. E. Stebbins, E. Schneider, and A. Pines, Geochim. Cosmochim. Acta 52, 527 (1988).
T. Dunn, Geochim. Cosmochim. Acta 46, 2293 (1982).
T. Dunn, in Silicate Melts, edited by C. M. Scarfe, Short Course Handbook, May 1986 (Mineralogical Association of Canada, 1986), Vol. 12, p. 57.
H. A. Schaffer, J. Non-Cryst. Solids 67, 19 (1984).
F. F. Lange, J. Am. Ceram. Soc. 65, C-33 (1982).
V. Smolej, J. Am. Ceram. Soc. 66, C-33 (1983).
R. M. German, J. Am. Ceram. Soc. 69, C-40 (1986).
T. K. Chaki, Philos. Mag. 62, 465 (1990).
J. W. Nowok, S. A. Benson, E. N. Steadman, and D. W. Brekke, Fuel 72, 1055 (1993).
R. F. Cooper and D. L. Kohlstedt, J. Geophys. 91, 9315 (1986).
N. P. Bansal and R. H. Doremus, in Handbook of Glass Properties (Academic Press, Orlando, FL, 1986).
Y. Oishi, R. Terai, and H. Ueda, in Mass Transport Phenomena in Ceramics, edited by A. Cooper and A. Heuer (Plenum Press, New York, 1975), p. 297.
D. Gupta, in Diffusion Phenomena in the Thin Films and Microelectronic Materials, edited by D. Gupta and P. S. Ho (Noyes Publication, Park Ridge, NJ, 1988), p. 1.
M. Sasabe and K. Goto, Metall. Trans. 5, 2225 (1974).
J. W. Nowok, unpublished data.
G. H. Frischat, Ionic Diffusion in Oxide Glasses (Trans Tech. Publ., Bay Village, OH, 1975), p. 136.
J. Henderson, L. Yang, and G. Derge, Trans. Metall Soc. AIME 221, 56 (1961).
M. P. Ryan and J. K. Blevins, U. S. Geol. Survey Bull., 1764 (1987).
T. Uchino, T. Sakka, Y. Ogata, and M. Iwasaki, J. Non-Cryst. Solids 146, 26 (1992).
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Nowok, J.W. A model of diffusion/viscous mass transport in silicates during liquid-phase sintering. Journal of Materials Research 10, 401–404 (1995). https://doi.org/10.1557/JMR.1995.0401
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DOI: https://doi.org/10.1557/JMR.1995.0401