Bhandavat, R.
, Feldman, A.
, Cromer, C.
, Lehman, J.
and Singh, G.
(2013),
Very high laser-damage threshold of polymer-derived Si(B)CN-carbon nanotube composite coatings, Journal of Applied Physics, [online], https://doi.org/10.1021/am302755x
(Accessed April 23, 2024)
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Very high laser-damage threshold of polymer-derived Si(B)CN-carbon nanotube composite coatings
Published
Author(s)
Romil Bhandavat, , , , Gurpreet Singh
Abstract
We study the laser irradiance behavior and resulting structural evolution of polymer-derived silicon −boron−carbonitride (Si(B)CN) functionalized multiwall carbon nanotube (MWCNT) composite spray coatings on copper substrate. We report a damage threshold value of 15 kWcm‑2 and an optical absorbance of 0.97 after irradiation. This is an order of magnitude improvement over MWCNT (1.4 kWcm−2, 0.76), SWCNT (0.8 kWcm−2, 0.65) and carbon paint (0.1 kWcm−2, 0.87) coatings previously tested at 10.6 υm (2.5 kW CO2 laser) exposure. Electron microscopy, Raman spectroscopy, and X- ray photoelectron spectroscopy suggests partial oxidation of Si(B)CN forming a stable protective SiO2 phase upon irradiation.Citation
Journal of Applied Physics
Volume
5
Issue
7
Pub Type
Journals
Download Paper
Keywords
carbon nanotubes, coatings, laser irradiance, polymer-derived ceramic, radiometry, Si(B)CN, thermal detectors
Citation
Created March 18, 2013, Updated October 12, 2021