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Journal of Materials Science

, Volume 25, Issue 1, pp 580–584 | Cite as

Improvements in mechanical properties of TiB2 by the dispersion of B4C particles

  • Eul Sson Kang
  • Chong Hee Kim
Article

Abstract

Densities up to 99% of the theoretical value were achieved by hot-pressing of TiB2-B4C composites at 1700° C for 1 h using 1 vol % Fe as a sintering aid. The microstructure consists of dispersed B4C particles in a fine-grained TiB2 matrix. Addition of B4C particles increases the fracture toughness of TiB2 (to 7.6 MPa m1/2 at 20 vol % B4C) and yields high fracture strength (to 700 MPa at 10 vol % B4C). Microstructural observations indicate that the improved strength is a result of a higher density, smaller grain size and intergranular fracture, and the toughness increase is a result of crack deflection around the B4C particles.

Keywords

Polymer Grain Size Microstructure Mechanical Property Fracture Toughness 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman and Hall Ltd. 1990

Authors and Affiliations

  • Eul Sson Kang
    • 1
  • Chong Hee Kim
    • 1
  1. 1.Department of Materials Science and EngineeringKorea Advanced Institute of Science and TechnologySeoulKorea

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