Consolidation of B                         4                         C-TaB                         2                          eutectic composites by spark plasma sintering

Dmytro Demirskyi; Yoshio Sakka; Oleg Vasylkiv

doi:10.1016/j.jascer.2015.08.001

Consolidation of B ₄ C-TaB ₂ eutectic composites by spark plasma sintering

Dmytro Demirskyi, Yoshio Sakka, Oleg Vasylkiv

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

13 Citations (Scopus)

Abstract

The in situ synthesis/consolidation of B ₄ C-TaB ₂ eutectic composites by spark plasma sintering (SPS) is reported. The microstructure-property relations were determined for composites with the B4C-TaB2 eutectic composition as functions of TaB2 content, and TaB ₂ -TaB ₂ interlamellar spacing. A clear maximum in fracture toughness was identified (~4.5 MPa m ^1/2 ) for eutectic composites with interlamellar spacing between 0.9 and 1.1 μm. The composites with the hypereutectic composition of 40 mol.% TaB2 obtained by SPS exhibited lower Vickers hardness (25-26 GPa) but higher indentation fracture toughness (up to 4.9 MPa m ^1/2 ) than eutectic composites with 30-35 mol.% of TaB ₂ .

Original language	English
Pages (from-to)	369-372
Number of pages	4
Journal	Journal of Asian Ceramic Societies
Volume	3
Issue number	4
DOIs	https://doi.org/10.1016/j.jascer.2015.08.001
Publication status	Published - 2015 Dec
Externally published	Yes

ASJC Scopus subject areas

Ceramics and Composites

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Consolidation of B ₄ C-TaB ₂ eutectic composites by spark plasma sintering . / Demirskyi, Dmytro; Sakka, Yoshio; Vasylkiv, Oleg.

In: Journal of Asian Ceramic Societies, Vol. 3, No. 4, 12.2015, p. 369-372.

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

Demirskyi, D, Sakka, Y & Vasylkiv, O 2015, ' Consolidation of B ₄ C-TaB ₂ eutectic composites by spark plasma sintering ', Journal of Asian Ceramic Societies, vol. 3, no. 4, pp. 369-372. https://doi.org/10.1016/j.jascer.2015.08.001

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abstract = " The in situ synthesis/consolidation of B 4 C-TaB 2 eutectic composites by spark plasma sintering (SPS) is reported. The microstructure-property relations were determined for composites with the B4C-TaB2 eutectic composition as functions of TaB2 content, and TaB 2 -TaB 2 interlamellar spacing. A clear maximum in fracture toughness was identified (~4.5 MPa m 1/2 ) for eutectic composites with interlamellar spacing between 0.9 and 1.1 μm. The composites with the hypereutectic composition of 40 mol.% TaB2 obtained by SPS exhibited lower Vickers hardness (25-26 GPa) but higher indentation fracture toughness (up to 4.9 MPa m 1/2 ) than eutectic composites with 30-35 mol.% of TaB 2 . ",

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N2 - The in situ synthesis/consolidation of B 4 C-TaB 2 eutectic composites by spark plasma sintering (SPS) is reported. The microstructure-property relations were determined for composites with the B4C-TaB2 eutectic composition as functions of TaB2 content, and TaB 2 -TaB 2 interlamellar spacing. A clear maximum in fracture toughness was identified (~4.5 MPa m 1/2 ) for eutectic composites with interlamellar spacing between 0.9 and 1.1 μm. The composites with the hypereutectic composition of 40 mol.% TaB2 obtained by SPS exhibited lower Vickers hardness (25-26 GPa) but higher indentation fracture toughness (up to 4.9 MPa m 1/2 ) than eutectic composites with 30-35 mol.% of TaB 2 .

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