Improving bonding of structural elements usually requires techniques that modify the surface chemistry (by soaking in chemical baths) or the surface morphology (by sandblasting). However, these well-known techniques can be quite difficult to implement considering all the stages of implementation (waste management, HSE, etc...). In addition, the 2007 European REACH regulation forbids nowadays the use of certain chemicals (including Cr (VI)) in all manufacturing processes.
ALPhANOV has developed a method to replace these conventional techniques with a non-contact chemical-free surface preparation technique by laser surface processing.
This process requires the use of nanosecond laser sources emitting in the UV, the visible or the IR (according to the type of applications) and has been successfully carried on metallic surfaces (Al--Ti) and on CFRP composites.
Application fields are very diverse: