Designing experiments to develop measurements for species catalytic recombination using actinometry and optical emission spectroscopy on silicon carbide

This thesis aims to present a study of surface catalytic recombination using optical emission actinometry. The focus of the aforementioned experimental approach is to determine the intensity ratios from specific Argon and atomic Oxygen spectral lines at various distances above the sample. Figuring the previously mentioned ratios will enable the accurate estimation of the recombination layer thickness as well as the recombination coefficient or efficiency of the sample material. The material of interest in this study is a ceramic, specifically Silicon Carbide. This ceramic is commonly applied as a coating on top of Reinforced Carbon-Carbon TPS, which is placed on locations that experience the highest temperatures during re-entry. Focus of the study shifted temporarily towards material science, specifically to create Silicon Carbide samples that could be resistively heated. SOL-GEL, a wet chemical procedure that was investigated and attempted as a method to produce a ceramic coating, was established as the most viable method via X-Ray diffraction.

Name thesis:degree_name

M.S.

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Aerospace Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2023

Author dc:creator

• Soliman, Ali Mohamed

Contributors dc:contributor

• Panerai, Francesco

• Aerospace
• Atmospheric Re-entry
• Thermal Protection System
• Tps
• Material Testing
• Actinometry
• Optical Emission Spectroscopy
• Sol-gel
• Silicon Carbide
• Sic
• Oxidation
• Silica

Statement dc:rights

• Copyright 2023 Ali Soliman

Language dc:language

en, eng

Handle dc:identifier

https://hdl.handle.net/2142/121375

OAI record oai:identifier

https://www.ideals.illinois.edu/oai-pmh?verb=GetRecord&metadataPrefix=etdms&identifier=oai%3Awww.ideals.illinois.edu%3A2142%2F121375