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

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×m^1/2 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 language	English
Title of host publication	Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures
Editors	Victor E. Panin, Sergey G. Psakhie, Vasily M. Fomin
Publisher	American Institute of Physics Inc.
Volume	1683
ISBN (Electronic)	9780735413306
DOIs	https://doi.org/10.1063/1.4932751
Publication status	Published - 27 Oct 2015
Event	International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2015 - Tomsk, Russian Federation Duration: 21 Sep 2015 → 25 Sep 2015

Conference

Conference	International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2015
Country	Russian Federation
City	Tomsk
Period	21.9.15 → 25.9.15

Keywords

alumina
hot pressing
microstructure
nanocomposite
TiC
toughness
zirconia

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1063/1.4932751

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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

The structure and properties of composites Al₂O₃-ZrO₂-TiC for use in extreme conditions. / Grigoriev, M. V.; Kotelnikov, N. L.; Buyakova, S. P.; Kulkov, S. N.

Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures. ed. / Victor E. Panin; Sergey G. Psakhie; Vasily M. Fomin. Vol. 1683 American Institute of Physics Inc., 2015. 020061.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Grigoriev, MV, Kotelnikov, NL, Buyakova, SP & Kulkov, SN 2015, The structure and properties of composites Al₂O₃-ZrO₂-TiC for use in extreme conditions. in VE Panin, SG Psakhie & VM Fomin (eds), Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures. vol. 1683, 020061, American Institute of Physics Inc., International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2015, Tomsk, Russian Federation, 21.9.15. https://doi.org/10.1063/1.4932751

Grigoriev MV, Kotelnikov NL, Buyakova SP , Kulkov SN. The structure and properties of composites Al₂O₃-ZrO₂-TiC for use in extreme conditions. In Panin VE, Psakhie SG, Fomin VM, editors, Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures. Vol. 1683. American Institute of Physics Inc. 2015. 020061 https://doi.org/10.1063/1.4932751

Grigoriev, M. V. ; Kotelnikov, N. L. ; Buyakova, S. P. ; Kulkov, S. N. / The structure and properties of composites Al₂O₃-ZrO₂-TiC for use in extreme conditions. Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures. editor / Victor E. Panin ; Sergey G. Psakhie ; Vasily M. Fomin. Vol. 1683 American Institute of Physics Inc., 2015.

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AB - 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.

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KW - nanocomposite

KW - TiC

KW - toughness

KW - zirconia

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