Corrosion resistance of Cr2O3 coating formed by in-situ oxidation on 2205 duplex stainless steel in different pH solutions

Enhancement of Corrosion and Wear Resistance of Ni–P Coatings Stems from the Synergistic Effects of Cr3C2 and Heat Treatment

“…The high-temperature annealing will cause the Ni−P−Cr 3 C 2 composite coatings to react with O in the air to produce some oxides, among which the more abundant oxide is Cr 2 O 3 , and this oxide will have a great enhancement effect on the composite coatings' corrosion resistance. 46 It can also be seen from Figure 4b′, a gradual increase in annealing temperature increases the grain size of the composite coating. This is because high temperature promotes crystallization, especially after electrodeposition of the prepared Ni−P−Cr 3 C 2 composite coatings, and high-temperature annealing also leads to rearrangement of the coating grains.…”

“…The primary reason for this is that oxides, such as Cr 2 O 3 , are generated on the surface of the composite coatings after heat treatment at 400 °C, which makes the surface of the coatings more densified. 46 Higher temperature facilitates densification, phase transformation, and consequent changes in the mechanical properties of the substrate. 68 The behavior observed during friction of heat-treated composite coatings at 400 °C mainly stems from the fact that the densification of the heat-treated composite coatings increases the contact area between the abrasive balls and the coating surface, resulting in a smoother surface.…”

“…Cai and his colleagues used an in situ oxidation method on the 2205 duplex stainless steel surface to prepare a Cr 2 O 3 thin film, It was found that Cr 2 O 3 films showed excellent corrosion resistance in an acid−base environment. 29 In this study, we deposited a Cr 3 C 2 ceramic material into the original Ni−P coating by pulsed electrodeposition. The structure, morphology, elemental composition, and content of the composite coating were characterized.…”

“…In addition, Cr 3 C 2 can also be oxidized at high temperatures to produce oxides such as Cr 2 O 3 . , It not only efficiently improves the attachment of the coating with the substrate but also has excellent resistance to corrosion and stability. Cai and his colleagues used an in situ oxidation method on the 2205 duplex stainless steel surface to prepare a Cr 2 O 3 thin film, It was found that Cr 2 O 3 films showed excellent corrosion resistance in an acid–base environment …”

Liquid Metal Embrittlement Susceptibility of Hot Formed Zn-Al-Mg Coated Steel with Eutectic Coating Microstructure

“…Third generation advanced high strength steels were used in automotive manufacturing owing to their high ductility and fatigue resistance [1][2][3][4][5][6][7][8][9][10][11]. Good corrosion resistance [12] of sheet steel was achieved by galvanizing [6,8,[13][14][15][16] compared to Al-Si coatings. However, the use of Zn-based coatings led to liquid metal embrittlement (LME).…”