Abstract
High infrared emissivity coatings were prepared on 304 steel by pyrolyzing reactions with poly(hydridomethylsiloxane) (PHMS) and Al/HW powders. The microstructure, phase and chemical composition of the coatings were determined by SEM, XRD and EDS techniques. The infrared emissive properties at wavelength 3-20μm of the coatings pyrolyzed at 600 and 800°C on the steels were investigated. It was found that the 800°C pyrolyzed coating exhibited a slightly higher infrared emissivity value than that of the 600°C pyrolyzed coating, which was attributed to the complete conversion of Al to Al 2O 3 and pyrolysis of PHMS into SiO 2, as well as the enhancement of photon emission by HW. Comparatively, the uncoated steel indicated a much lower infrared emissivity value about 0.2 in 8-14μm.
| Original language | English |
|---|---|
| Pages (from-to) | 3772-3776 |
| Number of pages | 5 |
| Journal | Surface and Coatings Technology |
| Volume | 206 |
| Issue number | 18 |
| DOIs | |
| State | Published - 15 May 2012 |
Keywords
- Coatings
- Infrared emissivity
- Infrared spectroscopy
- Steel
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