It was recalled that, when a metal and an oxide having dissimilar structures were joined, misfit dislocations were introduced at the interphase boundaries. The interfacial dislocation contents also changed as a function of the relative orientations of the crystals. A feature of secondary dislocations was that they could exist only within the boundary and could not branch out into the crystals. Several orientation relationships were reported for the internally oxidized and reduced Cu/MgO system. The interfacial structures which were related to these orientation relationships were investigated by using high-resolution transmission electron microscopy. The related interfacial structures were described by using displacement shift equations. In the present work, secondary dislocations which were related to the C3 twin orientation were investigated.

Secondary Interface Dislocations in Internally Oxidized MgO/Cu Composite. Y.G.Wang, J.T.M.De Hosson: Journal of Materials Science Letters, 2001, 20[5], 389-92