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Chapter 10
Advanced Ceramics

Excerpt

Advanced engineering ceramics such as silicon nitride (Si3N4), silicon carbide (SiC), alumina (Al2O3) and zirconia (ZrO2), which are made by modern fine manufacturing technology, have large hardness (Hv > 15 GPa) and acceptable toughness (KIC > 4 MPam0.5) properties that are useful for practical tribo-elements.

Although the toughness of these ceramics is not yet large enough to ensure reliable operation of machine elements under macroscopic tensile stress, it is large enough to ensure that of the tribo-elements, which work mainly under macroscopically compressive contact stress.

Ceramic tribo-elements show excellent performance from the viewpoint of low friction and/or low wear during operation at high speed, high temperature, and in corrosive or erosive environment.

  • 1. Introduction
  • 2. Physical and Mechanical Properties of Advanced Ceramics
  • 3. Surface Damages in Concentrated Contact
  • 4. Principal Friction Properties of Ceramics
  • 5. Principal Wear Properties of Ceramics
  • 6. Principal Lubrication Properties of Ceramics
  • 7. Concluding Remarks
  • Acknowledgment
  • References
Topics: Ceramics

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