Paul F Becher

Learn More
  • Paul F Becher, S M Wiederhorn-Contributing Editor, Martin Marietta En
  • 1990
The fracture toughness of ceramics can be improved by the incorporation of a variety of discontinuous, elastic reinforcing phases that generate a crack-bridging zone. Recent models of toughening by crack-bridging processes are discussed and used to describe the behavior observed i n whisker-reinforced ceramics. The toughening response in ceramics reinforced(More)
Silicon nitride (Si3N4) ceramics are used in numerous applications because of their superior mechanical properties. Their intrinsically brittle nature is a critical issue, but can be overcome by introducing whisker-like microstructural features. However, the formation of such anisotropic grains is very sensitive to the type of cations used as the sintering(More)
  • 1