Synthesis and characterization of boron suboxide powder produced at ambient pressure condition

O. T. Johnson, E. N. Ogunmuyiwa, I. Sigalas

Research output: Contribution to journalArticle

Abstract

Boron suboxide (B6O)−based materials have shown good properties which make them good candidates for cutting tool and other applications where abrasive wear resistance is important. The objective of this study was to optimize the production of B6O at ambient pressure by varying reaction temperature and time. B6O powders were produced from the reaction between boric acid and amorphous boron powders at the reaction temperatures between 300°C and 1400°C for 6 h. The powders produced were characterized in terms of particle size, phase analysis and composition, product yield, as well as morphology. Increase in temperature increased both the yield as well as the particle size of the produced powders. X-ray diffraction (XRD) pattern obtained also showed improved crystallinity of the produced powder as the temperature increases. Scanning electron microscopy (SEM) images of the synthesized powder at higher temperature clearly showed improved crystallinity (star-like crystals) as the reaction temperature was increased. The B6O powders synthesized at 1300°C for 6 h had the optimum yield of over 95%.

Original languageEnglish
Pages (from-to)434-438
Number of pages5
JournalParticulate Science and Technology
Volume35
Issue number4
DOIs
Publication statusPublished - Jul 4 2017

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Boron
Powders
Temperature
Particle size
Boric acid
Cutting tools
Abrasion
Diffraction patterns
Stars
Wear resistance
X ray diffraction
Crystals
Scanning electron microscopy
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

Cite this

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abstract = "Boron suboxide (B6O)−based materials have shown good properties which make them good candidates for cutting tool and other applications where abrasive wear resistance is important. The objective of this study was to optimize the production of B6O at ambient pressure by varying reaction temperature and time. B6O powders were produced from the reaction between boric acid and amorphous boron powders at the reaction temperatures between 300°C and 1400°C for 6 h. The powders produced were characterized in terms of particle size, phase analysis and composition, product yield, as well as morphology. Increase in temperature increased both the yield as well as the particle size of the produced powders. X-ray diffraction (XRD) pattern obtained also showed improved crystallinity of the produced powder as the temperature increases. Scanning electron microscopy (SEM) images of the synthesized powder at higher temperature clearly showed improved crystallinity (star-like crystals) as the reaction temperature was increased. The B6O powders synthesized at 1300°C for 6 h had the optimum yield of over 95{\%}.",
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Synthesis and characterization of boron suboxide powder produced at ambient pressure condition. / Johnson, O. T.; Ogunmuyiwa, E. N.; Sigalas, I.

In: Particulate Science and Technology, Vol. 35, No. 4, 04.07.2017, p. 434-438.

Research output: Contribution to journalArticle

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