Abstract
The sintering and crystallization behaviour of a series of cordierite-type glass powders with varying substitution of Na2O for MgO was compared with that of glass powders subjected to an Mg2+2Na+ ion-exchange treatment. The ion-exchange modifies only the properties of a 3–4 μm thick surface layer on the glass grains. Whereas the bulk substitution results in a decrease in the glass transition temperature, Tg, the surface modification shows only a small influence on the overall Tg of the ion-exchanged glass. Both glass powder series show, however, a temperature decrease of the start of sintering with increasing Na2O content which demonstrates that only the viscosity of a surface layer is decisive for the start of sintering. The sintering range is enlarged to higher temperatures through the suppression of the crystallization of β-quartz solid solution. The surface-modified glass powders show strong cordierite crystallization at constant temperatures around 1000 °C, whereas in the bulk-modified glass powders, the temperature of cordierite crystallization increases and the total amount of cordierite decreases with increasing Na2O content.
Similar content being viewed by others
References
J. FRENKEL,J. Phys. (USSR) IX (1945) 385.
J. K. MACKENZIE and R. SHUTTLEWORTH,Proc. Phys. Soc. (Lond.) Sect. B 62 (1949) 833.
G. PARTRIDGE,Glass Technol x28 (1987) 9.
R. MÜLLER, D. THAMM and W. PANNHORST,Bol. Soc. Esp. Ceram. Vid. 31-C 5 (1992) 105.
R. MORRELL,Proc. Br. Ceram. Soc. 28 (1979) 53.
E. M. RABINOVICH, in “Nucleation and Crystallization in Glasses”, edited by J. H. Simmons, D. R. Uhlmann and G. H. Beall (American Ceramic Society, Colombus, Ohio 1982) p. 327.
T. HÜBERT, R. MÜLLER and M. KIRSCH,Silikattechnik 39 (1988) 183.
S. H. KNICKERBOCKER, A. H. KUMAR and L. W. HERRON,Am. Ceram. Soc. Bull. 72 (1993) 90.
E. A. GIESS, J. P. FLETCHER and L. W. HERRON,J. Am. Ceram. Soc. 67 (1984) 549.
K. WATANABE and E. A. GIESS,ibid. 68 (1985) C102.
T. RUDOLPH, D. V. SZABO, W. PANNHORST, K. L. WEISSKOPF and G. PETZOW,Glastech. Ber. 64 (1991) 218.
C. I. HELGESSON,Sci. Ceram. 8 (1981) 347.
T. J. CLARK and J. S. REED,J. Am. Ceram. Soc. 69 (1986) 837.
Idem,Am. Ceram. Soc. Bull. 65 (1986) 1506.
I. SZABO, W. PANNHORST and M. RAPPENSBERGER,Bol. Soc. Esp. Ceram. Vid. 31-C 5 (1992) 119.
H. OKAMURA, E. A. BARRINGER and H. K. BOWEN,J. Am. Ceram. Soc. 69 (1986) C22.
F. A. SELMI and V. R. W. AMARAKOON,ibid. 71 (1988) 934.
K. G. BROOKS and V. R. W. AMARAKOON,ibid. 74 (1991) 851.
M. D. SACKS, N. BOZKURT and G. W. SCHEIFFELE,ibid. 74 (1991) 2428.
J. S. KIM, H. SCHUBERT and G. PETZOW,J. Eur. Ceram. Soc. 5, (1989) 311.
M. KULIG, W. OROSCHIN and P. GREIL,ibid. 5 (1989) 209.
C. M. WANG and F. L. RILEY,ibid. 10 (1992) 83.
A. GARG and E. MATIJEVIC,Langmuir 4 (1988) 38.
B. DJURICIC, D. McGARRY and S. PICKERING, in “Third Euro-Ceramics”, edited by P. Durán and J. F. Fernández, Vol. 1 (Faemza Editnce, Ibrice SL. 1993) p. 237.
M. BOUCHNAFA, B. SOULESTIN, R. GUINEB-RETIERE, A. LECOMTE and A. DAUGER, in “Proceedings of the International Symposium on Glass Science and Technology” 6–8 October, edited by Kordas Athens, Greece (1993).
R. GUINEBRETIERE, A. DAUGER and A. LECOMTE, in “Eurogel '91”, editd by S. Vilminot, R. Nass and H. Schmidt (Elsevier Science, 1992) p. 391.
S. D. STOOKEY, J. S. OLCOTT, H M. GARFINKEL and D. L. ROTHERMAL, in "Advances in Glass Technology" (Plenum Press, New York, 1962) p. 397.
N. H. RAY and M. H. STACEY,J. Mater. Sci. 4 (1969) 73.
H. M. GARFINKEL,Glass Ind. 50 (1969) 28.
Idem.,ibid. 50 (1969) 74.
G. J. FINE and P. S. DANIELSON,Phys. Chem. Glasses 29 (1988) 134.
G. H. FRISCHAT, Ionic diffusion in oxide glasses” (Trans Tech Publications, Aedermannsdorf, Switzerland, 1975).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
WINTER, W. Sintering and crystallization of volume- and surface-modified cordierite glass powders. Journal of Materials Science 32, 1649–1655 (1997). https://doi.org/10.1023/A:1018555428800
Published:
Issue Date:
DOI: https://doi.org/10.1023/A:1018555428800