Plasma electrolytic fluorination on Mg alloys: coating growth and plasma discharge behaviour

In this work, plasma electrolytic fluorination (PEF) was performed on AZ91 alloy in a non-aqueous NH4F-ethylene glycol (EG) electrolyte. The coating growth and the plasma discharge behaviour were investigated to understand the mechanism of PEF process. Results illustrated that the non-aqueous electrolyte determined the intrinsic characteristics of the PEF process, which resulted in the coating growth characteristics and plasma discharge...