Surface modification of metallic alloys can create hydrophilic or hydrophobic surfaces that
enhance the functional performance of the material. For example, hydrophilic surfaces have improved
wettability, which improves mechanical anchorage in adhesive bonding operations. This
wettability is directly related to the type of texture created on the surface and the roughness obtained
after the surface modification process. This paper presents the use of abrasive water jetting as an
optimal technology for the surface modification of metal alloys. A correct combination of high traverse
speeds at low hydraulic pressures minimises the power of the water jet and allows for the removal
of small layers of material. The erosive nature of the material removal mechanism creates a
high surface roughness, which increases its surface activation. In this way, the influence of texturing
with and without abrasive has been evaluated, reaching combinations where the absence of abrasive
particles can produce surfaces of interest. In the results obtained, the influence of the most relevant
texturing parameters between hydraulic pressure, traverse speed, abrasive flow and spacing has
been determined. This has allowed a relationship to be established between these variables and surface
quality in terms of Sa, Sz and Sk, as well as wettability.
