Oxidation behaviour of SiC/SiC ceramic matrix composites in air
By N. Nasiri, N. Patra, N. Ni, D. Jayaseelan, William E Lee. 2016
193 citations recorded by the source corpus.
Oxidation of silicon melt infiltrated SiC/SiC ceramic matrix composites (CMC) was studied in air at 1200–1400 °C for 1, 5, 24 and 48 h. Weight gain and oxide layer thickness measurements revealed the oxidation follows parabolic reaction kinetics with increase in temperature and time. XRD showed the extent of oxide layer (SiO2) formation was greatest after 48 h at 1400 °C: an observation confirmed by X-ray photoelectron spectroscopy (XPS), energy dispersive spectroscopy (EDS) and transmission electron microscopy (TEM) analyses. Oxide layer thickness varied from 1 μm after 48 h at 1200 °C to 8 μm after 48 h at 1400 °C. Oxidation of SiC/SiC composites is both temperature and time dependent with an activation energy of 619 kJ mol−1. BN coatings around SiC fibres showed good resistance to oxidation even after 48 h at 1400 °C.
Subfields: Ceramics and Composites, Electrical and Electronic Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/ff79946d6c3a51645a30f5c52b5133e68d125de8
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In Ceramics and Composites
In Materials Chemistry
Citations in the corpus
- A review on environmental barrier coatings: History, current state of the art and future developments (2020, background): “[4] reported the oxidation kinetics of SiC/SiC CMCs exposed at 1200–1400 C for up to 48 h in air, showing a parabolic mass gain and oxide layer thickness growth that was caused by a decrease in the oxidation rate associated with the diffusion of oxygen through the oxide layer, with an activation ene”