Abstract
Two kinds of high-purity Al2O3 powder were studied with respect to the effects of not only MgO doping but also atmosphere on both densification and grain growth. Controversial results for MgO doping are explained in terms of two roles that MgO can play during these processes: sensitive and insensitive to the experimental procedures. Atmospheres, whether dry or wet, had little influence on densification or grain growth in the early stage. After closed pores appreciably formed, however, both N2 and Ar atmospheres quickly reduced the densification rate.
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References
R. L. Coble, U.S. Pat. No. 3,026,210, March 20 (1962).
P. J. Jorgensen and J. H. Westbrook, J. Am. Ceram. Soc. 47 (7), 332 (1964).
J. G. J. Peelen, Mater. Sci. Res. 10, 443 (1975).
A. H. Heuer, J. Am. Ceram. Soc. 62 (5–6), 317 (1979).
R. J. Brook, Proc. Br. Ceram. Soc. 32, 7 (1982).
M. P. Harmer, E. W. Roberts, and R. J. Brook, Trans. Br. Ceram. Soc. 78 (1), 22 (1979).
C. Greskovich and J. P. Chernoch, J. Appl. Phys. 44 (10), 4599 (1973).
G. H. Haertling and C. E. Land, J. Am. Ceram. Soc. 54 (1), 1 (1971).
R. J. Bratton, J. Am. Ceram. Soc. 56 (7), 283 (1974).
T. Ikegami, K. Kotani, and K. Eguchi, J. Am. Ceram. Soc. 70 (12), 885 (1987).
W.C. Johnson and R. L. Coble, J. Am. Ceram. Soc. 61 (3–4), 110 (1978).
M.I. Mendelson, J. Am. Ceram. Soc. 52 (8), 443 (1969).
R.F. Porter, W.A. Chupka, and M. G. Inghram, J. Chem. Phys. 23 (7), 1347 (1995).
R.M. Cannon, W.H. Rhodes, and A.H. Heuer, J. Am. Ceram. Soc. 63 (1–2), 46 (1980).
J. L. Woolerey and M. J. Bannister, J. Am. Ceram. Soc. 55 (8), 390 (1972).
T. Ikegami, Jpn. J. Ceram. Soc. 96 (10), 1037 (1988).
P.J. Anderson and P. L. Morgan, Trans. Faraday Soc. 60, 930 (1964).
E.A. Aitken, J. Am. Ceram. Soc. 43 (12), 627 (1960).
R.L. Coble, J. Am. Ceram. Soc. 45 (3), 123 (1962).
O. Hunderi, N. Ryum, and H. Westengen, Acta Metall. 27, 161 (1979).
P.G. Shewmon, Trans. AIME 230 (10), 1134 (1964).
F.A. Nichols, J. Nucl. Mater. 30, 143 (1969).
C. Greskovich and K. W. Lay, J. Am. Ceram. Soc. 55 (3), 142 (1972).
K.A. Berry and M. P. Harmer, J. Am. Ceram. Soc. 69 (2), 143 (1986).
D.W. Ready, J. Lee, and T. Quadir, in Sintering and Heterogeneous Catalysis, edited by G.C. Kuczynski, A.E. Miller, and G.A. Sargent (Plenum Press, New York, 1984), Vol. 16, pp. 115–136.
J. Zhao and M. P. Harmer, J. Am. Ceram. Soc. 70 (12), 860 (1987).
R.J. Brook, J. Am. Ceram. Soc. 52 (1), 56 (1969).
T. Ikegami, M. Tsutsumi, S. Matsuda, S. Shirasaki, and H. Suzuki, J. Appl. Phys. 49 (7), 4238 (1978).
C.A. Handwerker, J.M. Dynys, R.M. Cannon, and R.L. Coble, J. Am. Ceram. Soc. 73 (5), 1371 (1990).
I. Sakaguchi, V. Srikanth, T. Ikegami, and H. Haneda, J. Am. Ceram. Soc. 78 (9), 2557 (1995).
Y. Oishi and W. D. Kinegery, J. Chem. Phys. 33 (2), 480 (1960).
K.P. R. Reddy and A. R. Cooper, J. Am. Ceram. Soc. 65 (12), 643 (1982).
D.J. Reed and B. J. Wuensch, J. Am. Ceram. Soc. 63 (1–2), 88 (1980).
H. Haneda and C. Monty, J. Am. Ceram. Soc. 72 (7), 1153 (1989).
K.P. D. Lagerlof, T. E. Mitchell, and A. H. Heuer, J. Am. Ceram. Soc. 72 (11), 2159 (1989).
H. Song and R. L. Coble, J. Am. Ceram. Soc. 73 (7), 2077 (1990).
S.K. Bae and S. Baik, J. Am. Ceram. Soc. 77 (10), 2499 (1994).
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Ikegami, T., Eguchi, K. Two kinds of roles of MgO in the densification and grain growth of alumina under various atmospheres: Sensitive and insensitive roles to the experimental procedures. Journal of Materials Research 14, 509–517 (1999). https://doi.org/10.1557/JMR.1999.0073
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DOI: https://doi.org/10.1557/JMR.1999.0073