Abstract
Starting from three different commercial powders, AIN materials were densified by pressureless sintering under various temperature and time values in order to investigate the influence of microstructure on thermal conductivity. The influence of the sintering aids (3 wt% Y2O3 and 2 wt% CaC2) and of the forming processes (cold isostatic pressing and thermocompression of tape cast pieces) were also been evaluated. Thermal conductivity increased with the purity level of the starting powder and with an increasing the sintering temperature and soaking time. The highest thermal conductivity values (196 Wm−1 K−1) were obtained with the purest powder and high temperature (1800 °C) sintering over long periods (6 h). No influence on thermal conductivity was detected from the forming technique.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
K. Shinozaki, N. Iwase andA. Tsuge, FC Annual Report (1986) p. 16.
T. J. Morz,Ceram. Bull. 70 (1991) 848.
P. Boch, J. C. Glandus, J. Jarrige, J. P. Lecompte andJ. Mexain,Ceram. Int. 8 (1992) 34.
L. M. Sheppard,Amer. Ceram. Soc. Bull. 69 (1990) 1801.
G. A. S. Lack,J. Phys. Chem. Solids 34 (1973) 321.
R. R. Lee,J. Amer Ceram. Soc. 74 (1991) 2242.
Y. Kurokawa, K. Utsumi andH. Takamizawa,J. Amer. Ceram. Soc. 71 (1988) 588.
E. Streicher, T. Chartier, P. Boch, M. F. Denanot andJ. Rabier,J. Europ. Ceram. Soc. 6 (1990) 23.
S. Ruckmich, A. Kranzmann, E. Bischoff andR. J. Brook,J. Europ. Ceram. Soc. 7 (1991) 335.
T. Chartier, E. Streicher andP. Boch,J. Europ. Ceram. Soc. 9 (1992) 231.
H. Buhr, G. Muller, H. Wiggers, F. Aldinger, P. Foley andA. Roosen,J. Amer. Ceram. Soc. 74 (1991) 718.
J. P. Lecompte, J. Jarrige andJ. Mexmain, in “Progress in nitrogen ceramics”, edited by F. C. Riley (Mortimus Nijholf, Boston, MA, 1973) p. 293.
A. Bellosi andG. N. Babini, in “Euro-Ceramics II, Vol. 3”, edited by G. Ziegler and H. Hausner (Deutsche Keramische Ges., Köln, 1993) p. 1819.
K. Komeya,Amer. Ceram. Soc. Bull. 63 (1984) 1158.
A. Kranzmann, P. Greil andG. Petzow, in “High tech ceramics”, edited by P. Vincenzini (Elsevier, New York, 1987) p. 975.
K. Watari, M. Kawamoto andK. Ishizaki,J. Mater. Sci. 26 (1991) 4727.
T. B. Jackson, K. Y. Donaldson andD-P. H. Hasselman,J Amer. Ceram. Soc. 73 (1990) 2511.
J. H. Enloe, R. W. Rice, J. W. Lau, R. Kumar andS. Y. Lee,J. Amer. Ceram. Soc. 74 (1991) 2214.
A. Hafidi, M. Billy andJ. P. Lecompte,J. Mater. Sci. 27 (1992) 3405.
H. Buhr, A. Thomas, G. Muller, M. Guther, C. Kostler, A. Roosen andW. Bocker, in “Euro-Ceramics II, Vol. 3”, edited by G. Ziegler and H. Hausner (Deutsche Keramische Ges., Köln, 1993) p. 1843.
A. V. Virkar, T. B. Jackson andR. A. Cutler,J. Amer. Ceram. Soc. 72 (1989) 2031.
P. S. De Baranda, A. K. Knudsem andE. Ruth,J. Amer. Ceram. Soc. 76 (1993) 1751.
P. S. De Baranda, A. K. Knudsem andE. Ruth J. Amer. Ceram. Soc 76 (1993) 1761.
D. P. H. Hasselman andK. Y. Donaldson,Int J. Thermophys. 11 (1990) 90.
L. Fabbri andE. Scafe',Rev. Sci. Instrum. 63 (1992) 2008.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Bellosi, A., Esposito, L., Scafè, E. et al. The influence of microstructure on the thermal conductivity of aluminium nitride. J Mater Sci 29, 5014–5022 (1994). https://doi.org/10.1007/BF01151092
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF01151092