Coated 316L Stainless Steel Research Articles

Influence of the spraying processes on the properties of 316L stainless steel coatings

The 316L stainless steel coatings produced by different thermal spraying processes are usually used to improve the corrosion behaviour of steel surfaces. In this study the coatings of 316L stainless steel were produced using atmospheric plasma spraying, shrouded plasma spraying and high velocity oxy-fuel spraying (HVOF). The influence of the thermal spraying processes and spray parameters on the properties of the coatings was investigated. The coatings were studied in terms of their microstructure, oxidation and corrosion behaviour. The corrosion behaviour of the coatings was evaluated using electrochemical polarisation measurements in 0.1 N H 2SO 4 and 0.1 N C 6H 8O 7·H 2O acid solutions. The experimental results revealed that dense coatings could be produced using all the three processes. The coatings with low oxidation could be produced by HVOF. The HVOF coatings were harder than other coatings. The HVOF coating showed also the best corrosion behaviour.

Friction and wear behaviour of implanted AISI 316L SS and comparison with a substrate

Ion implantation creates alterations in surface composition or morphology of solids which yield to a modification of physical and especially mechanical properties; such as hardness and modulus of elasticity. The aim of this study is to focus on the friction and wear behaviour of N 2 and Zr implanted and TiN coated 316L stainless steel and compare with a substrate. Particularly, stainless steels were of interest, because they often display a poor tribological behaviour, which can be improved when they are hardened by incorporating N 2, TiN and Zr and forming a hardened surface zone. The present implantations were shown to improve the friction coefficient as well as the wear resistance of the stainless steel surface.