Ion nitriding of equiatomic TiNi shape memory alloys II. Corrosion properties and wear characteristics

Effects of oxygen ion implantation on wear behavior of NiTi shape memory alloy

“…For specific applications, a variety of surface treatment approaches have been employed to reduce surface roughness, sterilize and passivate the surface of this alloy (Trépanier et al, 1999;Thierry et al, 2000a,b). In addition, coating and surface modification approaches such as ion implantation have been investigated (Rechavia et al, 1998;Schafer, 2002;Green et al, 1993;Wu et al, 1997;Tan and Crone, 2005). In the present research, plasma source ion implantation (PSII) with oxygen as incident ion species has been investigated with the goal of studying its effect on wear resistance of this alloy.…”

TiN coated stainless steel bracket: Tribological, corrosion resistance, biocompatibility and mechanical performance

“…There are so many studies on the corrosion resistance of TiN coating [11][12][13][14]. Coating TiN on NiTi alloy can significantly improve the corrosion resistance in H 2 SO 4 and HCl [15,16]. Endo et al [17] found TiN coating can improve the corrosion resistance of NiTi in 0.9% NaCl aqueous solution, but when increasing the voltage up to 500 mV, material tends to pitting.…”

Corrosion resistance improvement for 316L stainless steel coronary artery stents by trimethylsilane plasma nanocoatings

“…15–17 Ion implantation and laser treatment are effective methods to enhance the corrosion resistance of metallic materials. However, it is very expensive and difficult to treat a complex shape implant such as vascular stents or staples by using these two methods.…”

“…14 To date, tremendous efforts have been made to improve the corrosion resistance of implant metals by using various surface treatment techniques. [15][16][17] Ion implantation and laser treatment are effective methods to enhance the corrosion resistance of metallic materials. However, it is very expensive and difficult to treat a complex shape implant such as vascular stents or staples by using these two methods.…”

“…However, it is very expensive and difficult to treat a complex shape implant such as vascular stents or staples by using these two methods. 15,16 Some research works have focused on applying coatings to stents so as to improve their hemocompatibility. Surface coatings with hard and rigid bioceramics (TiN, TiCN, Al 2 O 3 , SiC, BN, and Si 3 N 4 ) fail in stenting applications due to the cracking of these coatings because of the expansion during stent dilatation.…”