Analysis of the surface properties of Al–Cu–Fe–B and Al–Co–Cu quasicrystalline coatings produced by HVOF

This study proposes to characterize through analysis of wettability and surface energy of Al59Cu25.5Fe12.5B3 and Al65Co18Cu17 quasicrystalline (QC) coatings produced by high-velocity oxygen-fuel (HVOF). Other materials such as polytetrafluoroethylene, bronze and austenitic stainless steel were also analyzed. For this, the sessile drop method was used to measure the static contact angle, as well as the experimental model proposed by Owens–Wendt–Rabel–Kaelble. The results were analyzed in terms of the polar and dispersive components of the total surface energy. The results showed that the quasicrystalline coatings showed low surface energy, in the order of magnitude of polytetrafluoroethylene.