Metal-ceramic interfaces of enhanced strength are produced by positioning bodies of ceramic oxides and transition element metals or alloys containing such in abutting relationship, and heating in air at a temperature ranging from 500 DEG C. to just below the melting point of the metal of the metal body to join said bodies and then subsequently heat treating said joined bodies in a reducing atmosphere at a temperature in the range of 300 DEG C. to 1200 DEG C. to form intermetallic compound layer at the interface.
