Effect of whisker surface treatments and processing conditions on the SiC/Al2O3 interface.

摘要

Various electron microscopy techniques have been used to evaluate the microstructural and interfacial characteristics of silicon carbide whisker-reinforced alumina composites. The effects of subjecting whiskers to oxidizing and reducing treatments prior to composite fabrication were examined. Whisker/matrix interfaces in which carbon coatings were applied to whiskers prior to specimen fabrication were also examined. Physical and thermodynamic arguments can be used to explain why it is difficult to greatly modify the physical nature of the whisker/matrix interface. 7 refs., 7 figs.