2020 Volume 128 Issue 4 Pages 217-219
Fibrous crystalline boron carbide (B4C) was fabricated by carbothermal reduction starting from electrospun condensed boric acid (H3BO3)-poly(vinyl alcohol) (PVA) product fibers. The addition of hydrochloric acid to a H3BO3-PVA/dimethyl sulfoxide solution resulted in electrospinnability of the solution; thus, condensed H3BO3-PVA product fibers were prepared by electrospinning. The fibrous B4C precursor was prepared by the thermal decomposition of the electrospun H3BO3-PVA product fibers in air. The fibrous B4C was obtained by heat treatment of the fibrous precursor at 1400 °C in an Ar flow. The structure of fibers in fibrous B4C consisted of connected particles.
Journal of the Ceramic Association, Japan
Journal of the Ceramic Association, Japan
