Abstract
The whisker length distributions that result from dispersive mixing operations in ceramic-whisker composites were evaluated by an optical imaging method. Pretreatment of whiskers with a lubricant was essential prior to the introduction of suspensions into processing machinery. Single screw extrusion was ineffective in dispersing the whiskers while twin screw extrusion produced a blend with mean whisker lengths of 6–10 µm depending on whisker content and processing variables. The damage to whiskers with initial lengths greater than 15 µm was severe in all the processing routes explored.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
G. C. WEI and P. F. BECHER, Amer. Ceram. Soc. Bull 64 (1985) 298.
K. M. PREWO and J. J. BRENNAN, J. Mater. Sci. 15 (1980) 463.
S. J. STEDMAN, J. R. G. EVANS and J. WOODTHORPE, ibid. in press.
M. J. EDIRISINGHE and J. R. G. EVANS, Proc. Brit. Ceram. Soc. 38 (1986) 67.
S. T. BULJAN, J. G. BALDONI and M. L. HUCNABEE, Amer. Ceram. Soc. Bull. 66 (1987) 347.
P. D. SHALEK, J. J. PETROVIC, G. F. HURLEY and F. D. GAC, ibid. 65 (1986) 351.
T. N. TIEGS and P. F. BECHER, ibid. 66 (1987) 339.
M. J. EDIRISINGHE and J. R. G. EVANS, J. Mater. Sci. 22 (1987) 269.
F. P. BOWDEN and D. TABOR, “The Friction and Lubrication of Solids” (Clarendon Press, Oxford, 1950) pp. 185–187.
J. G. ZHANG, M. J. EDIRISINGHE and J. R. G. EVANS, Industrial Ceram. 9 (1989) 72.
L. OTT, “An Introduction to Statistical Methods and Data Analysis” (Duxbury Press, North Scituate, Massachusetts, 1977).
B. FISA, Polym. Composites 6 (1985) 232.
J. V. MILEWSKI, Polym. Plast. Technol. Eng. 3 (1974) 101.
K. STADE, Polym. Eng. Sci. 17 (1977) 50.
W. Y. CHIU and G. D. SHYU, J. Appl. Polym. Sci. 34 (1987) 1493.
O. L. FORGACS and S. G. MASON, J. Colloid Sci. 14 (1959) 457.
A. SALMAS and J. F. T. PITTMAN, Polym. Eng. Sci. 21 (1981) 23.
R. VON TURKOVICH and L. ERWIN, ibid. 23 (1983) 743.
R. BAILEY and H. KRAFT, Int. Polym. Process. 2 (1987) 94.
M. J. FOLKES and D. KELLS, Plastics Rubb. Process. Appl. 5 (1985) 125.
D. M. BIGG, Polym. Composites 6 (1985) 20.
J. M. LUND and J. B. SHORTALL, Plastics Rubb. Process. 5 (1980) 37.
Idem, ibid. 4 (1979) 108.
R. J. NICHOLS, Plastics Compounding 9 (1986) 14.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Stedman, S.J., Evans, J.R.G. & Woodthorpe, J. Whisker length degradation during the preparation of composite ceramics for injection moulding. J Mater Sci 25, 1025–1032 (1990). https://doi.org/10.1007/BF03372197
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF03372197