Tough ceramics by microwave sintering of nanocrystalline titanium diboride ceramics

D. Demirskyi; D. Agrawal; A. Ragulya

doi:10.1016/j.ceramint.2013.07.010

Tough ceramics by microwave sintering of nanocrystalline titanium diboride ceramics

D. Demirskyi, D. Agrawal, A. Ragulya

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

Abstract

Dense composites of TiB₂ with additions of TiN have been produced by microwave sintering. Microwave sintering was conducted at 1200-1700 C under controlled atmosphere. The effects of composition, sintering temperature, on densification, microstructure, and mechanical properties were investigated. Microwave sintering resulted in uniform crack-free uniform microstructure, as well as maximum relative density of 99% and bending strength of 368±15 MPa, Young's modulus of 440±11 GPa, electric resistivity of 2×10^-5 Ω cm, Vickers hardness of 26.2 ±0.4 GPa, and a fracture toughness of 6.2±0.34 MPa·m^1/2 were obtained using 36 wt% TiB₂, and sintering for 10 min at 1650 C.

Original language	English
Pages (from-to)	1303-1310
Number of pages	8
Journal	Ceramics International
Volume	40
Issue number	1 PART B
DOIs	https://doi.org/10.1016/j.ceramint.2013.07.010
Publication status	Published - 2014 Jan
Externally published	Yes

Keywords

A. Sintering
Ceramics
Microwave heating
TiN

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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title = "Tough ceramics by microwave sintering of nanocrystalline titanium diboride ceramics",

abstract = "Dense composites of TiB2 with additions of TiN have been produced by microwave sintering. Microwave sintering was conducted at 1200-1700 C under controlled atmosphere. The effects of composition, sintering temperature, on densification, microstructure, and mechanical properties were investigated. Microwave sintering resulted in uniform crack-free uniform microstructure, as well as maximum relative density of 99% and bending strength of 368±15 MPa, Young's modulus of 440±11 GPa, electric resistivity of 2×10-5 Ω cm, Vickers hardness of 26.2 ±0.4 GPa, and a fracture toughness of 6.2±0.34 MPa·m1/2 were obtained using 36 wt% TiB2, and sintering for 10 min at 1650 C.",

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author = "D. Demirskyi and D. Agrawal and A. Ragulya",

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AU - Agrawal, D.

AU - Ragulya, A.

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N2 - Dense composites of TiB2 with additions of TiN have been produced by microwave sintering. Microwave sintering was conducted at 1200-1700 C under controlled atmosphere. The effects of composition, sintering temperature, on densification, microstructure, and mechanical properties were investigated. Microwave sintering resulted in uniform crack-free uniform microstructure, as well as maximum relative density of 99% and bending strength of 368±15 MPa, Young's modulus of 440±11 GPa, electric resistivity of 2×10-5 Ω cm, Vickers hardness of 26.2 ±0.4 GPa, and a fracture toughness of 6.2±0.34 MPa·m1/2 were obtained using 36 wt% TiB2, and sintering for 10 min at 1650 C.

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