ORCID

0009-0000-8501-218X

Keywords

Polymer infiltration and Pyrolysis, Ceramic matrix composite, stereolithography, hydrogen torch test, photopolymer

Abstract

Advanced ceramics and ceramic matrix composites (CMCs) are known for their endurance at high temperatures. This study investigated the fabrication and testing of two material systems: silicon carbide nitride (SiCN) reinforced with yttria-stabilized zirconia (YSZ) fiber manufactured through polymer infiltration and pyrolysis (PIP), and 3D-printed alumina (Al₂O₃) ceramics. The CMC thermal stability at high temperatures was explored through a hydrogen torch test. The CMC surface could withstand a temperature of 1,400°C for 10 minutes during the torch test. Furthermore, the internal surface of a hydrogen combustion chamber was coated with CMC to assess its applicability as a protective barrier against hydrogen flame. Microstructural analysis confirmed the formation of oxide scales such as SiO2 during the exposure to high heat flux. This study also investigated 3D-printed photopolymer-derived alumina ceramics as a candidate material for hydrogen combustion conditions. Controlled debonding and sintering at elevated temperatures yielded a dense ceramic structure from the green body. Finaly, the alumina liner was also tested as thermal protective layer inside hydrogen engine combustion chamber. The results show both the material systems could withstand the temperature. Further improvement is needed to withstand the mechanical load from the hot gas pressure.

Completion Date

2026

Semester

Spring

Committee Chair

Gou, Jihua

Degree

Master of Science in Mechanical Engineering (M.S.M.E.)

College

College of Engineering and Computer Science

Department

Department of Mechanical and Aerospace Engineering

Document Type

Dissertation/Thesis

Identifier

DP0053165

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