Bilayer period effect on corrosion–erosion resistance for [TiN/AlTiN]n multilayered growth on AISI 1045 steel

A Comparative Study of Corrosive-Erosive Effects at AISI D3 Steel, 304 Stainless Steel and CrN/AlN Material

“…steel substrates coated with multilayer system have showed an increase of corrosive protection as function the bilayer period ( ) [CrN/AlN]n [7]. Also the corrosive-erosive effect on steel coated with [TiN/AlTiN]n has been study and reported by W. Aperador et al [8]. In those studies, they found that coated substrates showed a better erosion resistance for impact velocity lower than 12 m/s.…”

“…This time was necessary for anodic and cathodic sweep potential. Tafel polarization curves were obtained at a sweep speed of 0.5mV/s in voltage range from -0.2 V to 0.8V with an exposed area of 1 cm 2 [8,13]. In this study, a silica solution (SiO 2 ) with particle sizes between 2.10 mm and 3.00 mm was used as an abrasive agent in the erosivecorrosive test with a linear velocity of 3.61 m/s.…”

“…Moreover, in microstructures where hard and disperse second phases such as chromium carbides are present, uniform corrosion of metallic matrix can accelerate the hard particle release from the surface and increase the total mass loss. Usually, in the stainless steels case, the control of little changes in microstructure or in the environmental conditions is crucial, since the synergistic effects are sensitive to microscopic features such as second phase precipitates, grain boundaries and surface texture of the components [6][7][8][9][10]. On the other hand, development of hard corrosion resistant coatings has always been a limited solution to minimize the erosive and corrosive combined attack.…”

“…In those studies, they found that coated substrates showed a better erosion resistance for impact velocity lower than 12 m/s. After that, the coating was removed from the substrate surface by perforation and spalling [8,9]. The aim of this work is to study the effect of impact angle on the corrosion-erosion resistance of commercial AISI D3 steel uncoated, AISI 304 stainless steel uncoated and AISI D3 steel coated with CrN/AlN multilayer system under corrosive slurry containing chloride ions (Cl -) and hard erosive particles.…”

Resistencia a la corrosión de multicapas de TiCN/TiNbCN depositadas sobre acero AISI 4140

“…Con la deposición de varias capas con diferentes propiedades mecánicas entre ellas, la estructura de las multicapas puede actuar como inhibidor de nano-grietas, además de incrementar la resistencia a la fractura (Yate et. al, 2008;Ramalingam & Zheng, 1995;Aperador et. al, 2010).…”