Abstract
From the measurement of neck size and neck curvature during the sintering of two spheres the surface diffusion coefficients of MgO and Al2O3 were determined. The spheres of both materials were machined from single crystals. The following values of surface diffusion coefficients were found: for MgO,D s δ s = 3.7 × 10−4 exp (407.8 kJ mol−1/RT m3 sec−1; for Al2O3,D s δ s = 1.5 × 10−2 exp (518.7 kJ mol−1/RT) m3 sec−1.
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References
G. C. Kuczynski,Trans. AIME 185 (1949) 169.
W. R. Rao andI. B. Cutler,J. Amer. Ceram. Soc. 55 (1972) 170.
Y. Moriyoshi andW. Komatsu,Yogyo-Kyokai-Shi 81 (1973) 102.
idem andW. Komatsu,ibid. 84 (1976) 348.
S. Prochazka andR. L. Coble,Phys. Sintering 2 (1970) 1.
W. Komatsu, Y. Moriyoshi, S. K. Moon, H. Kamata andS. Kurashima,Yogyo-Kyokai-Shi 85 (1977) 185.
M. F. Ashby,Acta Metall. 22 (1974) 275.
F. B. Swinkels andM. F. Ashby,Powder Metall. 1 (1980) 1.
P. Šajgalík, M. Haviar andZ. Pánek,Z. Metallkde 77 (1986) 193.
M. F. Ashby,Acta Metall. 20 (1972) 887.
W. M. Robertson, in “Sintering and Related Phenomena”, edited by G. C. Kuczynski, N. A. Hooton and C. F. Gibbon (Gordon and Breach, New, York, 1967) p. 215.
E. Ryshkewitch, “Oxide Ceramics” (Academic, New York, 1960) pp. 279–287.
E. Dörre andH. Hübner, “Aluminia” (Springer, Berlin, 1984) p. 12.
M. O'Keefe, in “Sintering and Related Phenomena”, edited by G. C. Kuczynski, N. A. Hooton and C. F. Gibbon (Gordon and Breach, New York, 1967) p. 57.
Y. Oishi, W. D. Kingery,J. Chem. Phys. 33 (1960) 480.
R. C. Weast (ed.), “Handbook of Chemistry and Physics” (Chemical Rubber Co., Cleveland, 1970) p. D-166.
V. Smolej,Z. Metallkde 74 (1983) 689.
W. S. Coblenz, J. M. Dynys, R. M. Cannon andR. L. Coble, in “Sintering Processes”, edited by G. C. Kuczynski (Plenum, New York, 1980) p. 141.
S. K. Rhee,Mater. Sci. Eng. 11 (1973) 311.
W. M. Robertson andR. Chang, in “The Role of Grain Boundaries and Surfaces in Ceramics”, edited by W. W. Kriegel and H. Palmour III (Plenum, New York, 1966) p. 49.
K. Kitazawa, I. Komaki, K. Fueki andT. Mukaibo, in Proceedings of 14th Annual Meeting on Basic Science of Ceramics, January 1976.
J. F. Shackelford andW. D. Scott,J. Amer. Ceram. Soc. 51 (1968) 688.
R. L. Coble andC. F. Yen,ibid. 55 (1972) 507.
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Šajgalík, P., Pánek, Z. & Uhrík, M. The surface diffusion coefficients of MgO and Al2O3 . J Mater Sci 22, 4460–4464 (1987). https://doi.org/10.1007/BF01132047
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DOI: https://doi.org/10.1007/BF01132047