Formation of Regular Hexagonal Dislocation Network in Chemical-Furnace Sintered Alumina

Abstract:

Article Preview

Polycrystalline alumina was prepared at high temperature and high pressure from combustion reaction plus mechanical pressure. The defect structure in the sintered alumina was investigated by transmission electron microscopy and a regular hexagonal dislocation network was found. Diffraction contrast technique revealed that the regular hexagonal network on the (0001) plane was composed of three dislocations with Burgers vectors: 1/3[1210], 1/3[ 2110] and 1/3[1120]. The formation process of dislocation network was discussed.

Info:

Periodical:

Key Engineering Materials (Volumes 368-372)

Edited by:

Wei Pan and Jianghong Gong

Pages:

672-674

Citation:

F. C. Meng et al., "Formation of Regular Hexagonal Dislocation Network in Chemical-Furnace Sintered Alumina", Key Engineering Materials, Vols. 368-372, pp. 672-674, 2008

Online since:

February 2008

Export:

Price:

$38.00

[1] M.L. Kronberg: Acta Metall. Vol. 5 (1957), p.507.

[2] J.D. Snow, A.H. Heuer: J. Am. Ceram. Soc. Vol. 56 (1973), p.53.

[3] K.P. D Lagerlof, A.H. Heuer, J. Castaing, et al.: J. Am. Ceram. Soc. Vol. 77 (1994), p.385.

[4] S.L. Korinek, J. Castaing: J. Am. Ceram. Soc. Vol. 86 (2003), p.566.

[5] T.E. Mitchell: J. Am. Ceram. Soc. Vol. 62 (1979), p.254.

[6] X.H. Tang, K.P.D. Lagerlof and H. Heuer: J. Am. Ceram. Soc. Vol. 86 (2003), p.560.

[7] Z.Y. Fu, H. Wang, W.M. Wang, et al.: J. Mater. Process. Tech Vol. 137 (2003), p.30.

[8] D. Hull, D.J. Bacon, in: Introduction to Dislocations, 3 nd Edition, Pergamon Press (1984).

Fetching data from Crossref.
This may take some time to load.