Abstract
We successfully fabricated crystalline boron carbide (B4C) fibers consisting of connected particles by carbothermal reduction. The condensed boric acid (H3BO3)-poly(vinyl alcohol) (PVA) product fibers were prepared from a H3BO3-PVA/dimethyl sulfoxide solution with glycerin added by electrospinning. The fibrous B4C precursor consisting of boron oxide and carbon components was prepared by the thermal decomposition of the electrospun condensed H3BO3-PVA product fibers in air. Crystalline B4C fibers consisting of connected particles were fabricated by the heat treatment of the fibrous B4C precursor at 1400 °C in an Ar flow.
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