Effect of ZrC and ZrO2 Additions on the Microstructure and Properties of ZrB2–SiC Ceramics

Abstract

Abstract—: We have studied the effect of ZrC and ZrO₂ additions on the microstructure and properties of ceramic composites based on ZrB₂–5% SiC, produced by pressure-sintering mechanically activated powders at a temperature of 1600°C. The results demonstrate that the addition of ZrO₂ increases the density, hardness, and fracture toughness of ceramic composites based on ZrB₂–5% SiC. In particular, the K_Ic of the ZrB₂–5% SiC ceramic is 4.6 ± 0.3 MPa m^1/2 and that of the composite containing 20% ZrO₂ is 7.3 ± 0.4 MPa m^1/2.

Original language	English
Pages (from-to)	522-527
Number of pages	6
Journal	Inorganic Materials
Volume	56
Issue number	5
DOIs	https://doi.org/10.1134/S0020168520050040
Publication status	Published - 1 May 2020

Keywords

densification
fracture toughness
hardness
modulus of elasticity
zirconium diboride

ASJC Scopus subject areas

Chemical Engineering(all)
Inorganic Chemistry
Metals and Alloys
Materials Chemistry

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title = "Effect of ZrC and ZrO2 Additions on the Microstructure and Properties of ZrB2–SiC Ceramics",

abstract = "Abstract—: We have studied the effect of ZrC and ZrO2 additions on the microstructure and properties of ceramic composites based on ZrB2–5% SiC, produced by pressure-sintering mechanically activated powders at a temperature of 1600°C. The results demonstrate that the addition of ZrO2 increases the density, hardness, and fracture toughness of ceramic composites based on ZrB2–5% SiC. In particular, the KIc of the ZrB2–5% SiC ceramic is 4.6 ± 0.3 MPa m1/2 and that of the composite containing 20% ZrO2 is 7.3 ± 0.4 MPa m1/2.",

keywords = "densification, fracture toughness, hardness, modulus of elasticity, zirconium diboride",

author = "Gusev, {A. Yu} and Voitsik, {V. F.} and Dedova, {E. S.} and Buyakova, {S. P.}",

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language = "English",

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journal = "Inorganic Materials",

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TY - JOUR

T1 - Effect of ZrC and ZrO2 Additions on the Microstructure and Properties of ZrB2–SiC Ceramics

AU - Gusev, A. Yu

AU - Voitsik, V. F.

AU - Dedova, E. S.

AU - Buyakova, S. P.

PY - 2020/5/1

Y1 - 2020/5/1

N2 - Abstract—: We have studied the effect of ZrC and ZrO2 additions on the microstructure and properties of ceramic composites based on ZrB2–5% SiC, produced by pressure-sintering mechanically activated powders at a temperature of 1600°C. The results demonstrate that the addition of ZrO2 increases the density, hardness, and fracture toughness of ceramic composites based on ZrB2–5% SiC. In particular, the KIc of the ZrB2–5% SiC ceramic is 4.6 ± 0.3 MPa m1/2 and that of the composite containing 20% ZrO2 is 7.3 ± 0.4 MPa m1/2.

AB - Abstract—: We have studied the effect of ZrC and ZrO2 additions on the microstructure and properties of ceramic composites based on ZrB2–5% SiC, produced by pressure-sintering mechanically activated powders at a temperature of 1600°C. The results demonstrate that the addition of ZrO2 increases the density, hardness, and fracture toughness of ceramic composites based on ZrB2–5% SiC. In particular, the KIc of the ZrB2–5% SiC ceramic is 4.6 ± 0.3 MPa m1/2 and that of the composite containing 20% ZrO2 is 7.3 ± 0.4 MPa m1/2.

KW - densification

KW - fracture toughness

KW - hardness

KW - modulus of elasticity

KW - zirconium diboride

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Effect of ZrC and ZrO₂ Additions on the Microstructure and Properties of ZrB₂–SiC Ceramics

Abstract

Keywords

ASJC Scopus subject areas

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