Composite materials based on high-modulus compounds for additive technology

M. Grigoriev, N. Kotelnikov, S. Buyakova, S. Kulkov

Research output: Contribution to journalConference article

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 argon atmosphere at the sintering temperature of 1500 °C one can obtain the composites of Al2O3-ZrO2-TiC with a fine structure and minimal porosity. It was shown that in the material a multi-scale hierarchical structure is formed, which possesses high physical and mechanical properties: the hardness and fracture toughness was 22 GPa and 5.2 MPa∗m1/2, respectively. It has been shown that mechanical properties of the composite are better than those of commercial composites based on aluminum oxide (Al2O3, ZTA, Al2O3-TiC) and are comparable to those of silicon nitride.

Original languageEnglish
Article number012009
JournalIOP Conference Series: Materials Science and Engineering
Volume140
Issue number1
DOIs
Publication statusPublished - 8 Aug 2016
EventInternational Seminar on Interdisciplinary Problems in Additive Technologies - Tomsk, Russian Federation
Duration: 16 Dec 201517 Dec 2015

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ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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