INTERFACE CHARACTERIZATION OF A BETA-SIC WHISKER-AL COMPOSITE

The nature of the interface, the orientation relationship of beta-SiC whisker (beta-SiCw)-Al combination, and the misfit dislocation structu res at the beta-SiCw-Al interfaces in a beta-SiCw-Al composite have be en observed by a high-resolution transmission electron microscopy (HRT EM). It was shown that quite a good bonding between the whisker and th e aluminium was achieved due largely to the lattice match between SiC and aluminium at the interfaces. The orientation relationship between the whisker and the aluminium was {002}(SiC)parallel to{111}(Al); [110 ](SiC)parallel to[110](Al). The interface was clean, faceted and semic oherent. The misfit dislocation cores were located in the whisker side away from the beta-SiCw-Al interfaces.