Journal of Materials Science, Vol.31, No.24, 6403-6407, 1996
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 structures at the beta-SiCw-Al interfaces in a beta-SiCw-Al composite have been observed by a high-resolution transmission electron microscopy (HRTEM). It was shown that quite a good bonding between the whisker and the 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 semicoherent. The misfit dislocation cores were located in the whisker side away from the beta-SiCw-Al interfaces.
Keywords:METAL-MATRIX COMPOSITES;TRANSMISSION ELECTRON-MICROSCOPY;PARTICULATE COMPOSITES;MECHANICAL-PROPERTIES;PARTICLE OXIDATION;MGO INTERFACES;BOND STRENGTH;BEHAVIOR;MICROSTRUCTURE;ADHESION