Skip to main content Accessibility help

Tm Analysis of Interfaces Beiween Nb and Al2O3 Precipitates

  • W. Mader (a1)


A Nb—Al alloy has been internally oxidized to produce A12O3precipitates. The interface between plate—like AI2O3 precipitates and the Nb matrix has been investigated by diffraction, CTEM, and HREM techniques. Periodic arrays of misfit dislocations were observed which acted as diffraction gratings for the electrons. The location of misfit dislocation cores could be determined from HREM images within an accuracy of a few lattice spacings. It can be concluded that the misfit dislocations lead to a good matching of atomic rows across the interface. The dislocation arrangement at this partially coherent interface is in accordance with theoretical expectations from dislocation theory.



Hide All
[1] Gibson, J.M. and Dawson, L.R. (eds.), Layered Structures, Epitaxy and Interfaces, MRS Syop. Proc. Vol. 37 (Materials Research Society, Pittsburgh, 1985).
[2] Giess, E.A., Tu, K.-N., and Uhlmann, D.R. (eds.), Electronic Packaging Materials Science, MRS Syrup. Proc., Vol. 40 (Materials Research Society, Pittsburgh, 1985).
[3] Rihle, M., Balluffi, R. W., Fischmeister, H., and Sass, S.L. (eds.), Int. Conf. on the Structure and Properties of Internal Interfaces, J. de Physique, Colloque C4 (1985).
Turwitt, M., Elssner, G., and Petzow, G., ibid., pp. 123127.
Florjancic, M., Mader, W., Ruhle, M., and Turwitt, M., ibid., pp. 129133.
[4] Burger, K., Mader, W., and Ruhle, M., Ultramicroscopy (in the press).
[5] Rihle, M., Backhaus-Ricoult, M., Burger, K., and Mader, W., Conf. on Ceraic Microstructures '86: Role of Interfaces, University of California, 1986 (to be published).
[6] Doychak, J.K., Eastman, J.A., and Mader, W., (unpublished).
[7] Ashby, M.F. and Smith, G.C., J. Inst. Metals 91, 182 (1963).
[8] Matthews, J.W., in Dislocations in Solids, Vol. 2, edited by Nabarro, F.R.N. (North-Holland, Amsterdam, New York, Oxford, 1979) pp. 461545.
[9] Johnson, K.H. and Pepper, S.V., J. Appl. Phys. 53, 6634 (1982).

Tm Analysis of Interfaces Beiween Nb and Al2O3 Precipitates

  • W. Mader (a1)


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed