Hostname: page-component-8448b6f56d-cfpbc Total loading time: 0 Render date: 2024-04-16T17:51:59.016Z Has data issue: false hasContentIssue false
  • English
  • Français

Role of water during AlN-hydrolysis-assisted solidification in ceramic suspensions studied by proton nuclear magnetic resonance T2 relaxation

Published online by Cambridge University Press:  31 January 2011

S. Novak ,
G. Lahajnar ,
A. Sepe  and
T. Kosmač
S. Novak
Affiliation:
“Jozef Stefan Institute”, Jamova 39, 1000 Ljubljana, Slovenia
G. Lahajnar
Affiliation:
“Jozef Stefan Institute”, Jamova 39, 1000 Ljubljana, Slovenia
A. Sepe
Affiliation:
“Jozef Stefan Institute”, Jamova 39, 1000 Ljubljana, Slovenia
T. Kosmač
Affiliation:
“Jozef Stefan Institute”, Jamova 39, 1000 Ljubljana, Slovenia
Get access

Abstract

Using proton nuclear magnetic resonance (1H-NMR), we have studied the thermally activated hydrolysis of aluminum nitride admixed into Al2O3 aqueous suspensions. We paid special attention to the formation of aluminum hydroxide and its role in binding the host ceramic particles into a stiff solid matrix. The water–proton NMR spin-spin relaxation time (T2) was continuously measured as a function of the time of the AlN hydrolysis in the host Al2O3 ceramic suspension. T2 was found to correlate with an increasing fraction of bound water at the surface of the formed hydrogel and so provided us with information about the gel-surface growth during the hydrolysis process. These results are in good agreement with the observed time- and composition-related increases in high-frequency impedance for the analyzed suspensions.

Type
Articles
Information
Journal of Materials Research , Volume 18 , Issue 8 , August 2003 , pp. 1968 - 1974
Copyright
Copyright © Materials Research Society 2003

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Bowen, P., Highfield, J., Mocellin, A., and Ring, T.A., J. Am. Ceram. Soc. 73, 724 (1990).CrossRefGoogle Scholar
Mobley, W.M., Ph.D. Thesis, Alfred University, New York (1996).Google Scholar
Kosmac, T., Novak, S., and Sajko, M., J. Eur. Ceram. Soc. 17, 427 (1997).CrossRefGoogle Scholar
Novak, S., Kosmac, T., Krnel, K., and Drazic, G., J. Eur. Ceram. Soc. 22, 289 (2002).CrossRefGoogle Scholar
Novak, S. and Kosmac, T., J. Mater. Res. 17, 445 (2002).CrossRefGoogle Scholar
Novak, S. and Draz, G.ic, J. Am. Ceram. Soc. 85, 264 (2002).CrossRefGoogle Scholar
Novak, S., Drazic, G., and Macek, S., J. Eur. Ceram. Soc. 21, 2081 (2001).CrossRefGoogle Scholar
Brinker, C.J. and Scherrer, G.W., Sol-Gel Science: The Physics and Chemistry of Sol-Gel Processing (Academic Press, Boston, MA, 1990), p. 362.Google Scholar
Bradley, S.M., Kydd, R.A., and Howe, R.F., J. Colloid Interface Science 159, 405 (1993).CrossRefGoogle Scholar
Morgado, E., Lam, Y.L., and Nazar, L.F., J. Colloid Interface Science 188, 257 (1997).CrossRefGoogle Scholar
Blinc, A., Lahajnar, G., Blinc, R., Zidanšek, A., and Sepe, A., Magn. Resonance Med. 14, 105 (1990).CrossRefGoogle Scholar
Woessner, D.E. and Zimmerman, J.R., J. Phys. Chem. 67, 1590 (1963).CrossRefGoogle Scholar
Woessner, D.E., Snowden, B.S., Jr., and Meyer, G.H., J. Colloid Interface Science 34, 43 (1970)CrossRefGoogle Scholar
Woessner, D.E. and Snowden, B.S., Jr., J. Colloid Interface Science 34, 290 (1970).CrossRefGoogle Scholar
Child, T.F. and Pryce, N.G., Biopolymers 11, 409 (1972).CrossRefGoogle Scholar
Lahajnar, G., Blinc, R., Rutar, V., Smolej, V., Zupancic, I., Kocuvan, I., and Uršic, J., Cem. Concr. Res. 7, 385 (1977).CrossRefGoogle Scholar
Blinc, R., Burger, M., Lahajnar, G., Rozmarin, M., Rutar, V., Kocuvan, I., and Uršic, J., Am. Ceram. Soc. 61, 35 (1978).CrossRefGoogle Scholar
Kosmac, T., Lahajnar, G., and Sepe, A., Cem. Concr. Res. 23, 1 (1993).CrossRefGoogle Scholar
Zimmerman, J.R. and Brittin, W.E., J. Phys. Chem. 61, 1328 (1957).CrossRefGoogle Scholar