How can you identify SiC from FTIR?
This page summarizes the recurring FTIR evidence reported for SiC, including the most frequent peaks, supporting functional groups, and literature-backed interpretation patterns. It is a structured evidence page, not a claim of automatic single-spectrum certainty.
Backed by 17 cited sources
Quick answer
SiC is usually reported with a recurring pattern of peaks and functional-group evidence. The most useful approach is to cross-check at least two characteristic peaks before treating it as a match, then verify whether the full spectrum still fits the same material family.
Peak interpretation
Possible materials / groups
| Funktionel gruppe | Bevis |
|---|---|
| Silicon carbon | 18 |
| Silicon-oxygen (Si-O) | 10 |
| Silicon (Si) | 6 |
| Siloxane (Si-O-Si) | 6 |
| Alkyl C-H | 2 |
| Carbonyl (C=O) | 1 |
| Silicon nitrogen | 1 |
| C c single bond | 1 |
Spectrum logic
The logic here is evidence aggregation: repeated literature mentions of SiC, repeated peak positions, and repeated functional-group associations. A strong material hypothesis should still be supported by multiple peaks that agree with each other, not by one headline band alone.
Real-world usage
This page is designed for polymer identification, incoming-material QC, unknown plastic analysis, recycled-content review, and literature-backed interpretation of reference spectra.
Common mistakes
- Calling a material match too early because one famous peak is present.
- Ignoring sample prep, fillers, oxidation, water, or additives that can change the apparent pattern.
- Using literature evidence without checking whether your own sampling mode and spectrum quality are comparable.
Verification advice
Use DSC, GC-MS, or TGA to validate the material hypothesis when the peak pattern is ambiguous or mixed.
Literature behind this page
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Fuad 等 - 2018 - Nanostructural Characters of beta-SiC Nanoparticle DOI: 10.1088/1742-6596/1011/1/012066 -
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Growth of silicon carbide nanorods from the hybrid of lignin and polysiloxane using sol-gel process and polymer blend technique DOI: 10.1016/j.matlet.2009.08.029 -
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In situ formation of β-silicon carbide nanorods from the hybrid of an organic moiety and methyltriethoxysilane DOI: 10.1016/j.matlet.2011.04.040 -
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Yan 等 - 2003 - SiC heteroepitaxial growth by low pressure chemica DOI: 10.1016/S0925-3467(03)00070-3 -
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Criner 等 - 2018 - Quantification of Material State using Reflectance DOI: 10.1063/1.5031610 -
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Henry 等 - 2018 - Characterization of Ceramic Matrix Composite Degra DOI: 10.1063/1.5031613 -
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Hermann 等 - 2014 - Characterization of semiconductor materials using DOI: 10.1364/OE.22.017948 -
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Kaestner 等 - 2018 - Compressed sensing FTIR nano-spectroscopy and nano DOI: 10.1364/OE.26.018115 -
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Low-energy Ar+ and N+ ion beam induced chemical vapor deposition using hexamethyldisilazane for the formation of nitrogen containing SiC and carbon containing SiN films DOI: 10.1371/journal.pone.0259216 -
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Ultra-fine beta SiC nanowires Isothermally converted from high activated silica by Carbothermic Reduction and Carburization at low temperature DOI: 10.1016/j.matchemphys.2020.123716
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