A Novel method of synthesis of high purity nano plated boron carbide powder by a solid-state reaction of poly (vinyl alcohol) and boric acid
Source abstract
Abstract
Nano plated and high-purity boron carbide (B 4 C) powder was synthesized via a novel method, based on a solid-state reaction of poly (vinyl alcohol) PVA and boric acid at (200–250) °C in air. The cross-linking between PVA and boric acid was proven by FTIR analysis. The obtained product, a new-type of poly vinyl borate (PVBO), was consecutively pyrolyzed at (700–800) °C for 120 min in air (S 1 ); or was ground and heat treated at 250 °C for 120 min, followed by pyrolysis at (700–800) °C for 120 min in air (S 2 ). Both pyrolyzed specimens (S 1 & S 2 ) were then heat treated at (1375–1475) °C in an Ar flow for (180-120) min, respectively. XRD analysis shows that high purity B 4 C was obtained from S 2 which was pyrolyzed at 750 °C and heat treated at 1475 °C. Compared to previous methods (commercial or sol-gel etc.), this approach is cost-effective, highly promising, and established a new reaction route in the field of polymer- derived ceramic (PDC).
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Boron and Carbon Nanomaterials Research · Advanced ceramic materials synthesis · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (18)
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