ORCID Identifier(s)

0009-0001-9682-4092

Graduation Semester and Year

2023

Language

English

Document Type

Thesis

Degree Name

Master of Science in Chemistry

Department

Chemistry and Biochemistry

First Advisor

Peter Kroll

Abstract

Polymer Derived Ceramics (PDCs) are synthesized by converting liquid polymer precursors into ceramics through controlled pyrolysis. This study focuses on silicon carbonitride (SiCN) ceramics obtained from Ceraset Polysilazane (Durazane1800) precursor. The influence of pyrolysis atmospheres, including inert (Ar, N2) and reactive (H2) environments, on the thermal conversion of Durazane1800 into SiCN ceramics is investigated. The resulting ceramics' chemical variations are explored through phase analysis using X-ray diffraction (XRD), Raman spectroscopy, and thermogravimetric analysis (TGA). Notably, the impact of hydrogen versus nitrogen atmospheres on the conversion process is analyzed, shedding light on their distinct contributions to the composition and properties of SiCN ceramics. The findings contribute to a comprehensive understanding of PDC synthesis, offering insights into tailoring ceramics for diverse applications.

Keywords

Polymer derived ceramics, Reactive atmosphere pyrolysis, Silicon carbo nitride (SiCN), H2 Pyrolysis, SiCN decomposition, SiCN phase analysis

Disciplines

Chemistry | Physical Sciences and Mathematics

Comments

Degree granted by The University of Texas at Arlington

Included in

Chemistry Commons

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