Metal/ceramic interfaces: Relationships between structure and chemistry. Final report, 15 March 1989-15 March 1992
Studies have been conducted on interfaces between Al2O3, and three different metals; Nb, Pd and Ni. The objectives have been to establish orientation relationships and to understand the atomistic structure along the interface. In the case of Ni, the formation of a spinel reaction product has also been explored. For Nb/Al2O3, it has been found that the orientation relationships and the atomic arrangements depend on the temperature at which the interface was formed. Those formed at high temperature by diffusion bonding have (110) planes in the Nb parallel to the interface. There are also misfit dislocations which 'stand-off' the interface.more »