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7 June 1999 Surface modification of TiN and (Ti,Al)N coatings by the TEA CO2 laser
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The interaction of a Transversely Excited Atmospheric (TEA) CO2 laser, pulse duration less than 2 µs, with low thickness coatings of titanium-nitride (TiN) and titanium-aluminum-nitride (TiAl)N, deposited on steel-substrate is considered. The investigations have shown that both coatings had been intensively modified by TEA CO2 laser beam. The (Ti,Al)N compared to TiN shows more expressed changes in the bombarded area: cracking and other surface modifications. Intensive surface exfoliation was observed only for (Ti,Al)N. Especially attention was devoted to the effects of laser pulse shape on morphology features. Generally, laser pulses with tail induced more signified changes on the coating surface.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Milan S. Trtica, Biljana M. Gakovic, and Tomislav M. Nenadovic "Surface modification of TiN and (Ti,Al)N coatings by the TEA CO2 laser", Proc. SPIE 3612, Gas and Chemical Lasers and Intense Beam Applications II, (7 June 1999);

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