Corrosion protection of steel with multilayer coatings: Improving the sealing properties of physical vapor deposition CrN coatings with Al 2 O 3 /TiO 2 atomic layer deposition nanolaminates

Abstract

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Multilayered Coatings for High-Temperature Steam Oxidation: TGA Studies up to 1000 °C

“…This surface engineering technology, which is also called as ''thermochemical processing,'' diffusion coating process,'' ''pack cementation,'' is based on the CVD principles (Ref [17][18][19][20][21][22][23][24][25][26] and is applicable for industrial large-size products. In addition, it would be reasonable to consider the coatings with more complex architectures (i.e., with more protective layers), since, according to the recent studies (Ref [27][28][29][30][31][32], such composite structures have also high potential in corrosion applications.…”

Effect of Surface Wear on Corrosion Protection of Steel by CrN Coatings Sealed with Atomic Layer Deposition

“…Similar results have been reported previously by growing ALD nanolaminates on PVD CrN coatings. 4 , 10 Wearing the top surface of the hybrid PVD/ALD coating reduces the corrosion protection to some extent. As seen in Figure 1 b, the corrosion current density is almost an order of magnitude higher with the extensive surface wear of the sample LSV5-Wear4.…”

“…1 Of various thin film coating methods, atomic layer deposition (ALD) has recently shown great promise in corrosion protection of steel. 2 − 10 Unfortunately, the practically limited thickness and comparatively small hardness of ALD coatings make it unsuitable for applications under heavy load, such as cutting instruments. More durable corrosion protection can be obtained by micrometer-thick hard physical vapor deposition (PVD) coatings, such as CrN.…”

“… 14 Pinhole sealing by ALD coatings has been reported to greatly counteract this, improving the corrosion protection. 4 , 7 , 10 …”

Al2O3–TiO2 composite coatings with enhanced anticorrosion properties for 316L stainless steel

“…Stainless steels are widely used as cutting tools, oil pipelines, structural materials, and in other applications due to their superior mechanical properties. [1][2][3] Generally, stainless steels exhibit good corrosion resistance in many corrosive environments. However, their service life is usually limited in the presence of chloride ions because of spontaneous corrosion, which occurs through chemical reactions with the surrounding environment.…”