DEPOSITION OF PROTECTIVE NANOSTRUCTURED DIAMOND-LIKE CARBON COATINGS ON ALUMINUM ALLOYS

λAn investigation has been made into the eff ects of preparation of the surface of aluminum alloy substrates on the adhesion to them of diamond-like carbon coatings with a high content of sp³ -bound carbon. Carbon coatings were deposited by the laser plasma method using a pulsed YAG:Nd³⁺ laser with the wavelength λ = 1064 nm, the pulse length at half-height ~20 ns, and the maximum pulse energy ~0.4 J. Highly oriented pyrolytic graphite has been used as a source of carbon. Coatings have been deposited on AMg aluminum alloy substrate. The possibility has been shown for the deposition of high-adhesion diamond-like carbon coatings with a high content of sp³ -bound carbon on aluminum alloys by the laser plasma method. An original method has been proposed for preparing the aluminum alloy surface before applying a protective carbon coating, with the said method consisting in the treatment of the substrate surface with plasma particles of an aluminum target accelerated to the energy of 1.5 keV
   
Author:  V. K. Goncharov ,   G. A. Gusakov ,  M. V. Puzyrev
Keywords:  laser plasma, adhesion, carbon nanofi lms, aluminum alloys
Page:  693