Year-end Sale % OFF 
Abstract
The aim of the present work is to develop a solid-state reaction-pyrolysis process (SRPP) of poly (vinyl alcohol) PVA and boric acid for the synthesis of boron carbide. PVA and boric acid in a molar ratio of (4:1) were dry-mixed, solid-state reacted by heating at (200–250)°C in air, and were directly pyrolyzed at (700–800)°C in air to obtain preceramic precursors. By varying the holding time at 250°C from 210 to 270min, its effects on the purity of the final product were investigated. The preceramic precursors were ground and heat treated at 1475°C for 120min in a flow of Ar. The XRD & FE-SEM analyses show that a high purity boron carbide powder with nanosized particles was obtained using this promising approach.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
