A study of the cavitation erosion behaviour of a Ti-Ni alloy coating

Microstructural evolution of NITINOL and their species formed by atmospheric plasma spraying

“…180.5 HV. There is large value of hardness at dark phase, which is due to formation of titanium oxide phases as well as intermetallic (NiTi, Ni 4 Ti 3 and Ni 9 Ti) during plasma spraying [45]. Hardness of different phases on the coated surface majorly affects the wear behaviour of the metal.…”

“…From image analyser, approximately 3% open pore found in our specimen and these pores are mostly overlaid by a layer of titanium oxide (detected from EDS data) that strictly opposes the corrosion. Zhou et al found that the formation of titanium oxide causes the formation of porosity in the coating surface [45]. The surface roughness of the coating is approximately 20 µm, which is due to the presence of pores on the surface of the coating or due to uneven surface structure.…”

Microstructure and Superior Corrosion Resistance of an In-Situ Synthesized NiTi-Based Intermetallic Coating via Laser Melting Deposition

“…NiTi-based intermetallic coatings have been developed to improve the corrosion resistance of NiTi alloys and reduce the material costs by decreasing the usage of expensive NiTi alloys. For instance, Zhou et al prepared NiTi-based intermetallic coatings on a Cu substrate by low pressure plasma spraying (LPPS) [12]. They found that the coatings were composed of NiTi, NiTi 2 , Ni 3 Ti, and Ti, and possessed higher anti-cavitation performance than coatings of pure Ti.…”

Enhancement in corrosion and electrical wear resistance of copper via laser surface alloying with NiTi

“…Their sliding wear and corrosion-erosion resistances are higher than traditional tribo-materials, including steels, Co-based and Ni-based alloys [9][10][11][12][13][14]. However, NiTi SMA is quite expensive and thus many efforts have been devoted in developing NiTi coatings using various surfacing techniques including sputtering, plasma spraying, explosive welding, plasma ion plating, laser surfacing and tungsten inert gas surfacing [14,[18][19][20][21][22][23][24][25][26][27].…”