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

Journal article

Authors/Editors

Ogunmuyiwa, Enoch

Research Areas

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Publication Details

Author list: Johnson OT, Ogunmuyiwa EN, Sigalas I

Publisher: Taylor and Francis Group

Place: PHILADELPHIA

Publication year: 2017

Journal: Particulate Science and Technology (0272-6351)

Journal acronym: PARTICUL SCI TECHNOL

Volume number: 35

Issue number: 4

Start page: 434

End page: 438

Number of pages: 5

ISSN: 0272-6351

eISSN: 1548-0046

Languages: English-Great Britain (EN-GB)

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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 degrees C and 1400 degrees C for 6h. 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 degrees C for 6h had the optimum yield of over 95%.

Keywords

Boron suboxide, crystallinity, morphology, Synthesis

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