Deposition of Co–Ti alloy on mild steel substrate using laser cladding

Microstructure and property of composite coatings on titanium alloy deposited by laser cladding with Co42+TiN mixed powders

“…The higher Co-Ti ratio gave birth to more Co 3 Ti [22], corresponding to the high diffraction peak of Co 3 Ti in specimen 2. It has been reported that the intermetallics of CoTi [23], CoTi 2 [24], Co 3 Ti [22] and NiTi [25] all contributed to the improvement of the wear properties of the substrate. Xue et al [23] fabricated a CoTi-based intermetallic alloy by laser melting deposition process.…”

In-situ laser-fabrication and characterization of TiC-containing Ti–Co composite on pure Ti substrate

“…Similar to titanium alloys, cobalt alloys have been widely used in biomedical and dental devices [19,20]. Titanium-cobalt intermetallics also have beneficial properties, with high hardness, good wear resistance, high-temperature phase stability and corrosion resistance reported [8,[21][22][23][24][25]. Titanium-cobalt coatings have been deposited by laser cladding on mild steel as well as Ti alloy substrates using elemental cobalt and titanium powders [8,21].…”

“…Titanium-cobalt intermetallics also have beneficial properties, with high hardness, good wear resistance, high-temperature phase stability and corrosion resistance reported [8,[21][22][23][24][25]. Titanium-cobalt coatings have been deposited by laser cladding on mild steel as well as Ti alloy substrates using elemental cobalt and titanium powders [8,21]. Work on Ti substrate has produced a 1.2 mm thick coating, containing a mixture of Ti 2 Co and TiCo intermetallics, with a peak surface hardness of 700 HVN and superior wear characteristics [8].…”

Laser Surface Modification — A Focus on the Wear Degradation of Titanium Alloy

“…Hemmati et al investigated into the effect of scanning speed on phase constituents and properties of laser-deposited coatings [41]; the investigation showed a significant refinement of dendritic structure that stabilized the phases and reduced the volume fraction of other phases at higher speeds. Laser cladding technology was used to deposit Co-Ti alloy on mild steel using different scanning velocities [42]. This resulted in a different rate of cooling of the clad variations in the microstructural characteristics and hardness of the clad layer.…”