Effect of Temperature and Ceramization Atmosphere on the Structure and Microstructure of Boron-Modified SiBOC Materials
Klaudia Łyszczarz, Piotr Jeleń, Patryk Szymczak, Maciej Sitarz
TL;DR
This paper studies how temperature and atmosphere affect the structure of boron-modified SiBOC ceramic materials.
Contribution
The study demonstrates that boron incorporation increases porosity and thermal stability in SiBOC materials.
Findings
Boron is successfully incorporated into the SiBOC material structure.
Free carbon phase is observed in SiBOC glasses confirmed by Raman spectroscopy.
Amorphous materials with nanocrystalline inclusions can be obtained under specific conditions.
Abstract
Boron-modified ceramic materials derived from polymers (PDC) are the subject of this research. The primary objective is to compare the structure and microstructure of SiBOC materials obtained in varying pyrolysis conditions in comparison to base SiOC materials. The preparation involved a number of stages, staring with the hydrolytic polycondensation method, followed by the initial thermal treatment and the final stage—pyrolysis process in argon or argon/hydrogen atmospheres at different temperatures. Bulk SiOC and SiBOC glasses were thoroughly analyzed. Microstructure studies included Scanning Electron Microscopy and Mercury Intrusion Porosimetry. Moreover, to confirm the structure, the research consisted of Fourier-Transform Infrared spectroscopy, Raman spectroscopy, and X-ray diffraction. The conducted research confirmed boron incorporation into the material structure in all samples.…
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Taxonomy
TopicsAdvanced ceramic materials synthesis · Diamond and Carbon-based Materials Research · Advanced materials and composites