Improving corrosion resistance of titanium-coated magnesium alloy by modifying surface characteristics of magnesium alloy prior to titanium coating deposition

Surface characteristics and corrosion resistance of biodegradable magnesium alloy ZK60 modified by Fe ion implantation and deposition

“…ion implantation and deposition [7][8][9]. The corrosion behavior of surgical AZ91 alloy in simulated body fluids after Al, Zr and Ti plasma immersion ion implantation and deposition (PIII&D) was investigated and the improved corrosion resistance was found for the Al treated sample as a result of the compact Al 2 O 3 layer and thick intermixed layer on the surface [10].…”

Corrosion behavior of carbon film coated magnesium alloy with electroless plating nickel interlayer

“…Altun and Sen (2007) later pointed out that one of the challenges for PVD coating technique is the relative low adhesion force with the substrate material. Wu et al (2009) attributed the difficulty of depositing hard coatings to the difference in physical properties between the coating and the substrate. For magnesium alloys with noble coatings, the magnesium alloy would act as the anode in a galvanic cell when the defective coating is exposed to corrosive electrolytes.…”

Mechanical and corrosion properties of Al/Ti film on magnesium alloy AZ31B

“…Thus, the use of titanium on the magnesium components attracts much attention. For instance, titanium has been ion implanted into magnesium and its alloys such as pure Mg [11], AZ91 [12], AZ31 [13] and WE43 alloy [14]; consequently a non-equilibrium microstructure is fabricated on the surface of the metals. Nevertheless, the film is too thin to be sufficiently corrosion and wear-resistant in a harsh aggressive environment.…”

“…To date, MS film has become the most important industrial applications, especially for the production of large area coating. A considerable coatings, containing: (i) metallic films such as Cr [24], Al [25] and Ti [13] as well as Ti/Al [26], (ii) Ncontaining non-metallic coating such as diamond-like carbon (DLC) [27], TiN [28], CrN [29], and (iii) hybrid coatings such as TiN/Ti [30][31], DLC/AlN/Al [32], Al 2 O 3 / Al and Al 2 O 3 /Ti [33], have been prepared on magnesium alloys by means of MS.…”

“…And then a post heat treatment (HT) or diffusion process is performed in order to develop a metallurgical bonding at the Mg/Al/Ti interface since there is a larger solubility of aluminum in both magnesium and titanium according to the Mg-Al and Al-Ti binary diagrams [36]. The solubility of aluminum in titanium is so high (12.7 wt.%) that aluminum has enough solubility in titanium, while titanium has almost no solubility in aluminum [13].…”