Evolution of surface oxide layer and oxidation-induced dimensional changes during passive oxidation of Silicon Carbide

Padmalatha Kakanuru, Jianyong Liang, Kishore Pochiraju

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Silicon Carbide (SiC) fiber composites are preferred as structural materials for advanced engine, gas turbine, heat exchanger and nuclear reactor applications due to their light weight, high thermal shock resistance and toughness engineered by material design. However SiC composites undergo damage when exposed to high temperature oxidative environments. Hence the durability of these composites is influenced by the oxide growth, oxidation-induced stress and damage evolution. In this paper, the passive oxidation is modeled as a moving boundary diffusion/reaction problem with oxidation-state dependent diffusion and solubility. The oxide growth on silicon and silicon carbide substrates is predicted with a one-dimensional diffusion/reaction model and validated with the Deal-Grove model predictions. The volumetric strain induced in an unconstrained SiC fiber and the resultant shape changes are predicted.

Original languageEnglish (US)
Title of host publicationProceedings of the American Society for Composites - 29th Technical Conference, ASC 2014; 16th US-Japan Conference on Composite Materials; ASTM-D30 Meeting
PublisherDEStech Publications
ISBN (Electronic)9781605951249
StatePublished - Jan 1 2014
Event29th Annual Technical Conference of the American Society for Composites, ASC 2014; 16th US-Japan Conference on Composite Materials; ASTM-D30 Meeting - La Jolla, San Diego, United States
Duration: Sep 8 2014Sep 10 2014

Other

Other29th Annual Technical Conference of the American Society for Composites, ASC 2014; 16th US-Japan Conference on Composite Materials; ASTM-D30 Meeting
CountryUnited States
CityLa Jolla, San Diego
Period9/8/149/10/14

Fingerprint

Silicon carbide
Oxides
Oxidation
Composite materials
Fibers
Thermal shock
Silicon
Nuclear reactors
Toughness
Heat exchangers
Gas turbines
Durability
Solubility
Engines
silicon carbide
Substrates
Temperature

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

Cite this

Kakanuru, P., Liang, J., & Pochiraju, K. (2014). Evolution of surface oxide layer and oxidation-induced dimensional changes during passive oxidation of Silicon Carbide. In Proceedings of the American Society for Composites - 29th Technical Conference, ASC 2014; 16th US-Japan Conference on Composite Materials; ASTM-D30 Meeting DEStech Publications.
Kakanuru, Padmalatha ; Liang, Jianyong ; Pochiraju, Kishore. / Evolution of surface oxide layer and oxidation-induced dimensional changes during passive oxidation of Silicon Carbide. Proceedings of the American Society for Composites - 29th Technical Conference, ASC 2014; 16th US-Japan Conference on Composite Materials; ASTM-D30 Meeting. DEStech Publications, 2014.
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Kakanuru, P, Liang, J & Pochiraju, K 2014, Evolution of surface oxide layer and oxidation-induced dimensional changes during passive oxidation of Silicon Carbide. in Proceedings of the American Society for Composites - 29th Technical Conference, ASC 2014; 16th US-Japan Conference on Composite Materials; ASTM-D30 Meeting. DEStech Publications, 29th Annual Technical Conference of the American Society for Composites, ASC 2014; 16th US-Japan Conference on Composite Materials; ASTM-D30 Meeting, La Jolla, San Diego, United States, 9/8/14.

Evolution of surface oxide layer and oxidation-induced dimensional changes during passive oxidation of Silicon Carbide. / Kakanuru, Padmalatha; Liang, Jianyong; Pochiraju, Kishore.

Proceedings of the American Society for Composites - 29th Technical Conference, ASC 2014; 16th US-Japan Conference on Composite Materials; ASTM-D30 Meeting. DEStech Publications, 2014.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AB - Silicon Carbide (SiC) fiber composites are preferred as structural materials for advanced engine, gas turbine, heat exchanger and nuclear reactor applications due to their light weight, high thermal shock resistance and toughness engineered by material design. However SiC composites undergo damage when exposed to high temperature oxidative environments. Hence the durability of these composites is influenced by the oxide growth, oxidation-induced stress and damage evolution. In this paper, the passive oxidation is modeled as a moving boundary diffusion/reaction problem with oxidation-state dependent diffusion and solubility. The oxide growth on silicon and silicon carbide substrates is predicted with a one-dimensional diffusion/reaction model and validated with the Deal-Grove model predictions. The volumetric strain induced in an unconstrained SiC fiber and the resultant shape changes are predicted.

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M3 - Conference contribution

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Kakanuru P, Liang J, Pochiraju K. Evolution of surface oxide layer and oxidation-induced dimensional changes during passive oxidation of Silicon Carbide. In Proceedings of the American Society for Composites - 29th Technical Conference, ASC 2014; 16th US-Japan Conference on Composite Materials; ASTM-D30 Meeting. DEStech Publications. 2014