Journal of Powder Materials

Research Article

Fabrication of Al₁₈B₄O₃₃ Spherical Powder with Increased Fluidity via Control of B₂O₃ Particle Size and Distribution: Kiho Song, Sang in Lee, Hyunseung Song, Changui Ahn; J Powder Mater. 2024;31(6):513-520. Published online December 31, 2024; DOI: https://doi.org/10.4150/jpm.2024.00304

Abstract PDF: Ceramic materials have become essential due to their high durability, chemical stability, and excellent thermal stability in various advanced industries such as aerospace, automotive, and semiconductor. However, high-performance ceramic materials face limitations in commercialization due to the high cost of raw materials and complex manufacturing processes. Aluminum borate (Al₁₈B₄O₃₃) has emerged as a promising alternative due to its superior mechanical strength and thermal stability, despite its simple manufacturing process and low production cost. In this study, we propose a method for producing Al₁₈B₄O₃₃ spherical powder with increased uniformity and high flowability by controlling the particle size of B₂O₃. The content ratio of the manufactured Al18B4O33 spherical powder was Al2O3: B2O3 = 87:13, and it exhibited a 17% reduction in the Hausner ratio (1.04) and a 29% decrease in the angle of repose (23.9°) compared to pre-milling conditions, demonstrating excellent flowability.

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