High temperature corrosion of nanoceria coated 9Cr–1Mo ferritic steel in air and steam

Microstructural Changes of Al Hot-Dipped P91 Steel during High-Temperature Oxidation

“…The increment of the surface hardness of the hot-dip aluminized P91 steel improves the wear resistance and thereby the performance of structural components [13]. Figure 7b,c, it is seen that the ~35 μm-thick (α-Al2O3, Fe2O3)-mixed oxide layer either detached or adherent (spots 1-2), ~90 μm-thick AlFe3 layer (spots [3][4][5], and the ~255 μm-thick Fe(Al) coating (spots 6-18; α-Fe layer dissolved with some Al) existed on the substrate (spots [19][20][21][22]. Iron diffused outwardly to form Fe2O3 (Figure 7a), whose amount was smaller than that of α-Al2O3 (spots 1-2 in Figure 7c).…”

“…The critical concentration needed to form the protective Cr 2 O 3 surface scale is about 10-12.5 wt % Cr for Fe-Cr alloys [1]. When 9Cr-1Mo steels oxidized at 650 • C, the scale composed of Fe 3 O 4 , Fe 2 O 3 , and (Fe,Cr) 3 O 4 formed [2], restricting their application above 650 • C [3]. Hence, the high-temperature oxidation resistance of 9Cr-1Mo steels needs to be improved through surface modification techniques.…”

Effect of Shot Peening on Water Vapor Oxidation Resistance of Austenitic Stainless Steel TP347H

“…[1][2][3][4][5][6][7] For this reason, companies like Japan NKK firstly proposed that carrying out shot peening and fine grain processing to the inner wall of austenitic stainless steel pipe improve the water vapor oxidation resistance of inner wall. [8][9][10][11] TP347H is the superheater and reheater tubes materials commonly used by power plant. In the experiment, the samples were been shot blasted, and the experiment was carried out through the homemade laboratory high temperature steam oxidation device.…”

High-temperature oxidation of FeCrAl alloy with alumina–silica–ceria coatings deposited by sol–gel method

“…According to the literature reports, when Ce is introduced, the rate of the hightemperature oxidation of alloys considerably decreases [36]. The presence of cerium in the coating and in the scale contributes to the outward diffusion of cations and to the inward anion transport during oxidation [35][36][37], eliminates voids in the region near the oxide-substrate interface and improves the adhesion of the scale to the substrate.…”