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The physical properties of metal-ceramic composites are strongly affected by the local chemistry and atomic bonding across the interface. Information on both are contained in the energy-loss near-edge structure. The spectral component specific for the interface can be obtained by the spatial- difference technique. This method was applied for the investigation of two different interfaces, namely Al/Al 2 O 3 and Cu/Al 2 O 3 . The Al-L 2,3 edge at the Al/Al 2 O 3 interface shows a characteristic energy-loss near-edge structure which was compared to multiple scattering calculations for Al(O 3 Al) tetrahedra with various Al-Al bond lengths. Good agreement with the experimental data was found for a cluster with an Al-Al bond length larger than the Al-O distance which is nearly that of amorphous Al 2 O 3 . No interface-specific component could be detected at the Al-L 2,3 edge of the Cu/Al 2 O 3 interface. However, the energy-loss near-edge structure of the Cu-L 2,3 edge indicates that Cu exists at the interface in a Cu 1+ state and that the chemical bond is established at the interface between Cu and O atoms

Electron Energy-Loss Near-Edge Structure of Metal-Alumina Interfaces