How can you identify SiC from FTIR?

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

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

• confidence 4.8

  SiC

  SiC heteroepitaxial growth by low pressure chemical vapor deposition on Si(111) substrates DOI: 10.1016/S0925-3467(03)00070-3
• confidence 4.8

  SiC

  Criner 等 - 2018 - Quantification of Material State using Reflectance DOI: 10.1063/1.5031610
• confidence 4.8

  SiC

  Characterization of ceramic matrix composite degradation using Fourier transform infrared spectroscopy DOI: 10.1063/1.5031613
• confidence 4.8

  SiC

  Characterization of semiconductor materials using synchrotron radiation-based near-field infrared microscopy and nano-FTIR spectroscopy DOI: 10.1364/OE.22.017948
• confidence 4.8

  SiC

  Kaestner 等 - 2018 - Compressed sensing FTIR nano-spectroscopy and nano DOI: 10.1364/OE.26.018115
• confidence 3.6

  SiC

  Nanostructural Characters of β-SiC Nanoparticles Prepared from Indonesian Natural Resource using Sonochemical Method DOI: 10.1088/1742-6596/1011/1/012066
• confidence 3.6

  SiC

  Ion beam induced modification and nanostructures formation in thin SiC/Pd films on c-Si substrate DOI: 10.1016/j.nimb.2021.01.018
• confidence 3.6

  SiC

  Growth of Single Crystalline 3C-SiC and AIN on Si using Porous Si as a Compliant Seed Crystal DOI: 10.4028/www.scientific.net/MSF.338-342.313
• confidence 3.6

  SiC

  Characterization of Thermal Oxides on 4H-SiC Epitaxial Substrates Using Fourier-Transform Infrared Spectroscopy DOI: 10.1177/0003702816658674
• confidence 3.6

  SiC

  Structure and optical properties of the SiC/ZnO five-layer multi-layer on Si (111) substrate with a SiC buffer layer DOI: 10.1088/0022-3727/39/15/005