Femtosecond laser surface structuring and oxidation of chromium thin coatings: Black chromium

A micro‐Raman spectroscopic study of Cr(OH)3 and Cr2O3 nanoparticles obtained by the hydrothermal method

“…That metals and metallic oxides heat up significantly under radiation can be explained by their low heat capacity and their high capacity to absorb light that result in considerable temperature increases. Nevertheless, although the synthesis of Cr 2 O 3 by other laser sources has previously been discussed in the literature,[] the effect of low values of laser power as those used in Raman spectroscopy has never been discussed before for chromium hydroxides.…”

Chromium oxide formation on nanosecond and femtosecond laser irradiated thin chromium films

“…Numerous laser sources with varying fundamental wavelengths and pulse durations have been used to achieve laser heating of chromium thin coatings. Kotsedi et al [13] showed the use of 1064 nm fundamental wavelength femtosecond laser to heat thin coatings of chromium, and from the X-ray diffraction studies, the Cr2O3 phase was observed, confirming the oxidation of the chromium thin coatings. Lian et al [14] has employed 1062 nm fundamental wavelength laser source with ms -pulse durations, to observe the oxidation of the chromium coating.…”

Metal and Metal Oxide Transformation and Texturing Using Pulsed Fiber Laser

“…Similar cracks were observed when thin films of chromium on a glass substrate were exposed to the femtosecond laser in the work done L. Kotsedi et.al. [26]. Higher magnification micrographs in Figure 3 (e) taken on the crack show bubble like morphology formed on the cracks due to laser heating, which induces a melting process.…”