Abstract
Oxidation behavior of additively manufactured zrb2–sic in air and in co2 is reported in the temperature range of 700–1000 °c. Observed scale morphologies in air and in co2 were similar, featuring an outer borosilicate layer and an inner porous zirconia layer containing partially oxidized silicon carbide particles and remnant borosilicate products. Oxide scale thicknesses and parabolic scaling constants in air were approximately twice those observed in co2 across all studied temperatures. Activation energies for oxidation of 140 ± 20 kj/mol in air and 110 ± 20 kj/mol in co2 were determined, indicating similar diffusion processes that appear to be rate-limiting. The formation of protective scales across wide temperature ranges both in air and in co2 makes additively manufactured zrb2–sic an attractive candidate for high-temperature industrial process applications featuring varied oxidants such as heat exchangers.
Recommended Citation
M. Lakusta et al., "Oxidation of Additively Manufactured ZrB2–SiC in Air and in CO2 at 700–1000 °C," High Temperature Corrosion of Materials, Springer, Jan 2024.
The definitive version is available at https://doi.org/10.1007/s11085-024-10241-2
Department(s)
Materials Science and Engineering
Second Department
Mechanical and Aerospace Engineering
Keywords and Phrases
Ceramics; Gas–solid reactions; Kinetics; Oxidation; Phase diagrams
International Standard Serial Number (ISSN)
2731-8400
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Springer, All rights reserved.
Publication Date
01 Jan 2024
Included in
Aerospace Engineering Commons, Ceramic Materials Commons, Mechanical Engineering Commons
