Characterization investigations of ZrB 2/ZrC ceramic powders synthesized by mechanical alloying of elemental Zr, B and C blends

Duygu Aĝaoĝullari; Hasan Gökçe; Ismail Duman; M. Lütfi Öveçoĝlu

doi:10.1016/j.jeurceramsoc.2011.04.026

Characterization investigations of ZrB ₂/ZrC ceramic powders synthesized by mechanical alloying of elemental Zr, B and C blends

Duygu Aĝaoĝullari^*, Hasan Gökçe, Ismail Duman, M. Lütfi Öveçoĝlu

^*Corresponding author for this work

Department of Metallurgical and Materials Engineering

Istanbul Technical University

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

31 Citations (Scopus)

Abstract

ZrB ₂/ZrC ceramic powders were fabricated by mechanical alloying (MA) of zirconium (Zr), amorphous boron (B) and graphite (C) powder blends prepared in the mole ratios of Zr/B/C: 1/1/1, 1/2/1, 1/1/2, 1/2/2 and 2/2/1. MA runs were carried out in a vibratory ball mill using hardened steel vial/balls. The effects of Zr/B/C mole ratios and milling duration on the formation and microstructure of ZrB ₂/ZrC ceramic powders were examined. Gibbs free energy change-temperature relations of the reactions and moles of the products were interpreted by thermochemical software. Zr/B/C: 1/1/1, 1/2/1, 1/1/2 and 1/2/2 powder blends MA'd for 2 and 3h contain unreacted Zr and C, ZrB ₂, ZrC and B ₄C particles. Synthesis of ZrB ₂/ZrC ceramic powders was completely accomplished after MA of Zr/B/C: 2/2/1 powder blend for 2h. ZrC and ZrB ₂ particles were obtained ranging in size between 50 and 250nm in the presence of FeB contamination (<1wt.%).

Original language	English
Pages (from-to)	1447-1455
Number of pages	9
Journal	Journal of the European Ceramic Society
Volume	32
Issue number	7
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2011.04.026
Publication status	Published - Jun 2012

Keywords

Borides
Carbides
Ceramic powders
Mechanical alloying
Solid state reaction

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10.1016/j.jeurceramsoc.2011.04.026

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title = "Characterization investigations of ZrB 2/ZrC ceramic powders synthesized by mechanical alloying of elemental Zr, B and C blends",

abstract = "ZrB 2/ZrC ceramic powders were fabricated by mechanical alloying (MA) of zirconium (Zr), amorphous boron (B) and graphite (C) powder blends prepared in the mole ratios of Zr/B/C: 1/1/1, 1/2/1, 1/1/2, 1/2/2 and 2/2/1. MA runs were carried out in a vibratory ball mill using hardened steel vial/balls. The effects of Zr/B/C mole ratios and milling duration on the formation and microstructure of ZrB 2/ZrC ceramic powders were examined. Gibbs free energy change-temperature relations of the reactions and moles of the products were interpreted by thermochemical software. Zr/B/C: 1/1/1, 1/2/1, 1/1/2 and 1/2/2 powder blends MA'd for 2 and 3h contain unreacted Zr and C, ZrB 2, ZrC and B 4C particles. Synthesis of ZrB 2/ZrC ceramic powders was completely accomplished after MA of Zr/B/C: 2/2/1 powder blend for 2h. ZrC and ZrB 2 particles were obtained ranging in size between 50 and 250nm in the presence of FeB contamination (<1wt.%).",

keywords = "Borides, Carbides, Ceramic powders, Mechanical alloying, Solid state reaction",

author = "Duygu Aĝaoĝullari and Hasan G{\"o}k{\c c}e and Ismail Duman and {\"O}ve{\c c}oĝlu, {M. L{\"u}tfi}",

year = "2012",

month = jun,

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T1 - Characterization investigations of ZrB 2/ZrC ceramic powders synthesized by mechanical alloying of elemental Zr, B and C blends

AU - Aĝaoĝullari, Duygu

AU - Gökçe, Hasan

AU - Duman, Ismail

AU - Öveçoĝlu, M. Lütfi

PY - 2012/6

Y1 - 2012/6

N2 - ZrB 2/ZrC ceramic powders were fabricated by mechanical alloying (MA) of zirconium (Zr), amorphous boron (B) and graphite (C) powder blends prepared in the mole ratios of Zr/B/C: 1/1/1, 1/2/1, 1/1/2, 1/2/2 and 2/2/1. MA runs were carried out in a vibratory ball mill using hardened steel vial/balls. The effects of Zr/B/C mole ratios and milling duration on the formation and microstructure of ZrB 2/ZrC ceramic powders were examined. Gibbs free energy change-temperature relations of the reactions and moles of the products were interpreted by thermochemical software. Zr/B/C: 1/1/1, 1/2/1, 1/1/2 and 1/2/2 powder blends MA'd for 2 and 3h contain unreacted Zr and C, ZrB 2, ZrC and B 4C particles. Synthesis of ZrB 2/ZrC ceramic powders was completely accomplished after MA of Zr/B/C: 2/2/1 powder blend for 2h. ZrC and ZrB 2 particles were obtained ranging in size between 50 and 250nm in the presence of FeB contamination (<1wt.%).

AB - ZrB 2/ZrC ceramic powders were fabricated by mechanical alloying (MA) of zirconium (Zr), amorphous boron (B) and graphite (C) powder blends prepared in the mole ratios of Zr/B/C: 1/1/1, 1/2/1, 1/1/2, 1/2/2 and 2/2/1. MA runs were carried out in a vibratory ball mill using hardened steel vial/balls. The effects of Zr/B/C mole ratios and milling duration on the formation and microstructure of ZrB 2/ZrC ceramic powders were examined. Gibbs free energy change-temperature relations of the reactions and moles of the products were interpreted by thermochemical software. Zr/B/C: 1/1/1, 1/2/1, 1/1/2 and 1/2/2 powder blends MA'd for 2 and 3h contain unreacted Zr and C, ZrB 2, ZrC and B 4C particles. Synthesis of ZrB 2/ZrC ceramic powders was completely accomplished after MA of Zr/B/C: 2/2/1 powder blend for 2h. ZrC and ZrB 2 particles were obtained ranging in size between 50 and 250nm in the presence of FeB contamination (<1wt.%).

KW - Borides

KW - Carbides

KW - Ceramic powders

KW - Mechanical alloying

KW - Solid state reaction

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Characterization investigations of ZrB ₂/ZrC ceramic powders synthesized by mechanical alloying of elemental Zr, B and C blends

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Keywords

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