The structure and properties of composites Al2O3-ZrO2-TiC for use in extreme conditions

M. V. Grigoriev, N. L. Kotelnikov, S. P. Buyakova, S. N. Kulkov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The effect of adding nanocrystalline ZrO2 and submicron TiC to ultrafine Al2O3 on mechanical properties and the microstructure of the composites developed by hot pressing was investigated. It was shown that by means of hot pressing in an argon atmosphere at a sintering temperature of 1500 degrees one can obtain the composites Al2O3-ZrO2-TiC with a fine structure and minimal porosity. It has been shown that in material a multi-scale hierarchical structure is formed, which possesses high physical and mechanical properties: the hardness and fracture toughness was 21.5?GPa and 5.2 MPa×m1/2 respectively, the modulus of elasticity was 500?GPa and bending strength was 390?MPa. Tests on composites' cutting properties were carried out on interrupted cutting of hardened steel. All samples had wear of the cutting edge in the form of chips of the grain rear working surface of the tool, but the cutting tool which was made by Al2O3-10% ZrO2-10% TiC had a minimum width of wear.

Original languageEnglish
Title of host publicationAdvanced Materials with Hierarchical Structure for New Technologies and Reliable Structures
EditorsVictor E. Panin, Sergey G. Psakhie, Vasily M. Fomin
PublisherAmerican Institute of Physics Inc.
Volume1683
ISBN (Electronic)9780735413306
DOIs
Publication statusPublished - 27 Oct 2015
EventInternational Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2015 - Tomsk, Russian Federation
Duration: 21 Sep 201525 Sep 2015

Conference

ConferenceInternational Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2015
CountryRussian Federation
CityTomsk
Period21.9.1525.9.15

Keywords

  • alumina
  • hot pressing
  • microstructure
  • nanocomposite
  • TiC
  • toughness
  • zirconia

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Grigoriev, M. V., Kotelnikov, N. L., Buyakova, S. P., & Kulkov, S. N. (2015). The structure and properties of composites Al2O3-ZrO2-TiC for use in extreme conditions. In V. E. Panin, S. G. Psakhie, & V. M. Fomin (Eds.), Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures (Vol. 1683). [020061] American Institute of Physics Inc.. https://doi.org/10.1063/1.4932751