Abstract
Abstract Boron suboxide (B6O), offering a good balance between abundance of its constituents and promising tribological performance, is intriguing. Applications such as cutting tools, high-wear resistant coatings, and ballistics would benefit from such properties, however a feasible synthesis method is yet to be realized. The synthesis of B6O under atmospheric pressure is a challenging pursuit, and there is insufficient thermodynamic data for the formation of boron suboxide in the literature. In this study, boron suboxide powder was synthesized by reducing B2O3 by amorphous boron. Phase analysis of the formation of boron suboxide was demonstrated within the temperature range of 1200–1350 °C. The amorphous phase beside boron suboxide is present for all temperature treatments, but the best fitting crystalline phase was observed of the powder synthesized at 1300 °C. The powder was also heat treated at 1300 °C for various hours (2–6 h), and the crystalline phase was only observed for the powder heat treated for 4 h. The morphology of synthesized powder exhibited a star-like morphology. The production of B6O-TiB2 composite powder by reduction of TiO2 by amorphous boron with the excess addition of boron is also reported in this study.
Published Version
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