| Abstract Scope |
The deformation of metal-oxide interfaces is important in many processes and technologies, for example strain accommodation at metal-oxide scale interfaces during high temperature oxidations, the mechanical properties of metal-ceramic composites, or sintering of metal oxide systems. Recent work demonstrates the importance of interfacial disconnections as the primary carriers of interfacial strain and the importance of disconnection nucleation in affecting kinetics and local stress. Disconnection nucleation at metal-oxide interfaces is expected to be highly anisotropic. High temperature in situ TEM experiments were performed on characterize interfacial strain at metal-oxide interfaces. Interfacial shear is facile at these interfaces. It is found, however, that such interfaces do not accommodate tensile strain efficiently, as compared to grain boundaries or certain oxide-oxide interfaces. Instead, bulk plasticity is favorable. |