Microwave Sintering of Alumina Using Four Single-Cavity Modes
Tóm tắt
In this study, alumina ceramics were sintered with 2.45-GHz microwaves in a cylindrical single-mode microwave cavity using four resonant cavity modes: TM111, TE112, TE113, and TM013. The mass density and grain size of sintered specimens were found to be relatively uniform with respect to both (i) the radial position within a given specimen and (ii) the cavity mode used to sinter the specimen. However, the initial power required to “couple” the field to the casket/specimen system and the power needed to reach and maintain the sintering temperature (1500°C) were both functions of the cavity mode.
Tài liệu tham khảo
M. A. Janney and H. D. Kimrey, Ceram. Powder Sci. II B Ceram. Trans. 1, 919–924 (1988).
H. D. Kimrey, J. O. Kiggans, M. A. Janney, and R. L. Beatty, in Microwave Processing of Materials, II Mater. Res. Soc. Symp. Proc. Vol. 189, W. B. Synder, W. H. Sutton, M. F. Iskander, and D. L. Johnson, eds. (Mater. Res. Soc., Pittsburgh, PA, 1991), pp. 243–256.
J. D. Katz, R. D. Blake, and J. J. Petrovic, Ceram. Eng. Sci. Proc. 9, 725–734 (1988).
M. K. Krage, Am. Ceram. Soc. Bull. 60, 1232–1234 (1981).
K. Bai and H. G. Kim, J. Mater. Sci. Lett. 13, 806–809 (1994).
S. Miyake, Y. Setsuhara, S. Kinoshita, S. Sano, M. Kamai, T. Ohmae, and N. Abe, in Microwaves: Theory and Application in Materials Processing IV, Ceramic Transactions, Vol. 80, D. E. Clark, W. H. Sutton, and D. A. Lewis, eds. (American Ceramic Society, Westerville, OH, 1997), pp. 313–320.
I. Ahmad, R. Silberglitt, W. M. Black, H. S. Sa'aladadin, Y. L. Tian, and J. D. Katz, in Microwaves: Theory and Application in Materials Processing II, Ceramic Transactions, vol. 36, D. E. Clark, J. R. Laia, and W. Tinga (American Ceramic Society, Westerville, OH, 1993), pp. 409–415.
N. Daneke, H. Krause, and G. Walter, in Proceedings of the 33rd Microwave Power Symposium (International Microwave Power Institute, Manassas, VA, 1998), pp. 9–12.
R. Bouchert and M. Willert-Porada, in Microwaves: Theory and Application in Materials Processing IV, Ceramic Transactions, Vol. 80, D. E. Clark, W. H. Sutton, and D. A. Lewis, eds. (American Ceramic Society, Westerville, OH, 1997), pp. 491–498.
E. D. Case, J. G. Lee, and K. Y. Lee, in Joining of Advanced and Specialty Materials, M. Singh, J. E. Indacochea, and D. Hauser, eds. (ASM International, Materials Park, OH, 1998), pp. 17–26.
I. Ahmad, R. Silberglitt, Y. L. Tian, H. S. Shan, and R. C. Cozens, in Microwaves: Theory and Application in Materials Processing III, Ceramic Transactions, Vol. 59, D. E. Clark, D. Folz, S. Oda, and R. Silberglitt, eds. (American Ceramic Society, Westerville, OH, 1995), pp. 357–365.
J. G. P. Binner, in Proceedings of the 33rd Microwave Power Symposium (International Microwave Power Institute, Manassas, VA, 1998) pp. 21–24.
K. Y. Lee, E. D. Case, J. Asmussen, Jr., and M. Siegel, Scripta Mater. 35, 107–111 (1996).
K. Y. Lee and E. D. Case, J. Mater. Sci. Lett. (in press).
Committee on Microwave Processing of Materials: An Emerging Industrial Technology, Microwave Processing of Materials (National Academy Press, Washington, DC, 1994).
D. M. Pozar, Microwave Engineering (Addison-Wesley, Reading, MA, 1990), pp. 34–38, 330–354.
Y. Liao, Microwave Devices and Circuits, 3rd ed. (Prentice-Hall, Englewood Cliffs, NJ, 1990), pp. 16–21, 133–141.
L. Meirovitch, Analytical Methods in Vibrations (Macmillan, London, 1967), pp. 185–190.
K. Y. Lee, L. C. G. Cropsey, B. R. Tyszka, and E. D. Case, Mater. Res. Bull. 32, 287–295 (1997).
K. Y. Lee, E. D. Case, and J. Asmussen, Jr., Mater. Res. Innovat. 1, 101–116 (1997).
P. Mak and J. Asmussen, J. Vac. Sci. Technol. A15, 154–168 (1997).
W. B. Westphal and A. Sils, in Dielectric Constant and Loss Data, Technical Report AFML-TR–72–39 (Air Force Materials Laboratory, Wright-Patterson Air Force Base, OH, 1972), pp. 4–37.
M. Arai, J. G. P. Binner, G. E. Carr, and T. E. Cross, in Microwaves: Theory and Application in Materials Processing II, Ceramic Transactions, Vol. 36, D. E. Clark, J. R. Laia, and W. Tinga, eds. (American Ceramic Society, Westerville, OH, 1993), pp. 483–492.
R. Vila, M. Gonzalez, J. Molla, and A. Ibarra, J. Nucl. Mater. 253, 141–148 (1998).
National Bureau of Standards (U.S.), Circ. 539 (1959), Vol. 9, p. 3.
E. E. Underwood, A. R. Colcord, and R. C. Waugh, in Ceramic Microstructures, R. M. Fulrath and J. A. Pask, eds. (John Wiley and Sons, New York, 1968), pp. 25–52.
K. A. Berry and M. P. Harmer, J. Am. Ceram. Soc. 69, 143–149 (1986).