Corrosion and tribo-corrosion behavior of a-SiCx:H, a-SiNx:H and a-SiCxNy:H coatings on SS301 substrate

Corrosion Behaviour of a SiOxNy Coated and Nitrided PH Stainless Steel

“…6), it reached 1 V above the corrosion potential. This value has been already registered by other researchers for silicon nitride coatings such as Li et al (2010). In figure 7a, a pit can be observed and the film is about to break off and detach, it is proposed that the current response in Figure 6 is due to corrosion initiation in a small defect where a pit is formed.…”

“…This would also mean an increase of the surface hardness and wear resistance of the nitrided layer. The oxides, nitrides, oxynitrides and carbides coatings possess low friction coefficient, high mechanical strength and chemical inertness, according to Faines et al (1997), Zhou et al (2010) and Li et al (2010). There are published results concerning the duplex processes (nitriding plus coating) where good tribological performance of the coating-substrate system, stresses reduction at the interface and improved adhesion have been achieved as reported byZukerman et al (2007), Qi et al (2007), Podgornik et al (2003), Guruvenket et al (2009) andBenkahoul et al (2009).…”

Bioceramic Coatings for Metallic Implants

“…These coatings were found to have superior mechanical properties (high hardness and strength), thermal stability, reduced friction, and enhanced wear-corrosion resistance [69,70]. In particular, investigations on TiSi-based carbide or carbonitride coatings as a possible candidate for a variety of metallic implants have attached interest because they can combine the mechanical, anticorrosive, and tribological properties of the TiC or TiCN with the biological characteristics of the SiC or SiCN [71,72]. Also, in the scientific literature it has been reported that SiC coatings prepared by magnetron sputtering are chemically inert and possess good biocompatibility and improve the corrosion resistance and the tribological performance of various steels [72][73][74].…”

Coatings for tribocorrosion protection

“…Amorphous hydrogenated silicon carbide (a-SiCx:h), silicon nitride (a-Sinx:h) and silicon carbonitride (a-SiCxny:h) coatings were prepared by Li et al (2010) using plasma-enhanced chemical vapour deposition (PECVd) and investigated as candidates for corrosion and tribocorrosionresistant surfaces for 301 stainless steel. the coatings substantially improved the wear resistance of the stainless steel substrate, while reducing the wear rate by factors of approximately 47, 33 and 15 for a-SiCx:h, a-Sinx:h and a-SiCxny:h coatings, respectively.…”