Composite materials based on high-modulus compounds for additive technology

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∗m^1/2, 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 language	English
Article number	012009
Journal	IOP Conference Series: Materials Science and Engineering
Volume	140
Issue number	1
DOIs	https://doi.org/10.1088/1757-899X/140/1/012009
Publication status	Published - 8 Aug 2016
Event	International Seminar on Interdisciplinary Problems in Additive Technologies - Tomsk, Russian Federation Duration: 16 Dec 2015 → 17 Dec 2015

ASJC Scopus subject areas

Materials Science(all)
Engineering(all)

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Grigoriev, M., Kotelnikov, N., Buyakova, S., & Kulkov, S. (2016). Composite materials based on high-modulus compounds for additive technology. IOP Conference Series: Materials Science and Engineering, 140(1), [012009]. https://doi.org/10.1088/1757-899X/140/1/012009

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title = "Composite materials based on high-modulus compounds for additive technology",

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.",

author = "M. Grigoriev and N. Kotelnikov and S. Buyakova and S. Kulkov",

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AU - Grigoriev, M.

AU - Kotelnikov, N.

AU - Buyakova, S.

AU - Kulkov, S.

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Y1 - 2016/8/8

N2 - 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.

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 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.

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