Method for loading coating on sponge metal and coating prepared by same
A technology of sponge metal and coating, applied in chemical instruments and methods, catalyst activation/preparation, catalyst carrier, etc., to achieve the effect of simple production process and equipment requirements, and firm combination
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Embodiment 1
[0051] A preparation method for loading a coating on a sponge metal:
[0052] (1) Metal surface pretreatment: Soak the iron-chromium-aluminum (0CR21AL6) sponge metal sheet in acid or alkali solution for 1 hour, and then wash it in deionized water for 10 minutes to remove oil, oxides and some impurities on the metal surface.
[0053] (2) Oxidation treatment: After the surface treatment, the iron-chromium-aluminum sponge metal is dried at 120°C for 2 hours, and then the sponge metal sheet is roasted at a high temperature of 550°C for 5 hours.
[0054] (3) Loading aluminum sol: load aluminum sol on the iron-chromium-aluminum (0CR21AL6) sponge metal sheet after high temperature oxidation, and dry at 100°C for 1 hour to prepare the iron-chromium-aluminum sponge metal aluminum sol coating;
[0055] (4) Loading lanthanum-modified alumina slurry: load lanthanum-modified alumina (La-Al2O3) slurry on the aluminum sol coating, dry at 120°C for 2 hours, then raise the temperature to 550°C...
Embodiment 2
[0060] A preparation method for loading a coating on a sponge metal:
[0061] (1) Metal surface pretreatment: Soak the iron-chromium-aluminum (0CR21AL6) sponge metal sheet in acid or alkali solution for 2 hours, and then wash it in deionized water for 15 minutes to remove oil, oxides and some impurities on the metal surface.
[0062] (2) Oxidation treatment: After the surface treatment, the iron-chromium-aluminum sponge metal is dried at 120°C for 2 hours, and then the sponge metal sheet is fired at a high temperature of 1050°C for 1 hour.
[0063] (3) Loading aluminum sol: load aluminum sol on the iron-chromium-aluminum (0CR21AL6) sponge metal sheet after high temperature oxidation, and dry at 120°C for 1.5h to prepare the iron-chromium-aluminum sponge metal aluminum sol coating;
[0064] (4) Loading composite lanthanum-modified alumina (La-Al2O3) and mixed metal oxide slurry: loading composite lanthanum-modified alumina (La-Al2O3) and mixed metal oxides on the aluminum sol c...
Embodiment 3
[0080] A preparation method for loading a coating on a sponge metal:
[0081] (1) Metal surface pretreatment: soak iron-chromium-aluminum (0CR21AL6) sponge metal sheet in acid or alkali solution for 0.8h, and then wash in deionized water for 8min to remove oil, oxides and some impurities on the metal surface.
[0082] (2) Oxidation treatment: After the surface treatment, the iron-chromium-aluminum sponge metal is dried at 80°C for 2 hours, and then the sponge metal sheet is roasted at a high temperature of 450°C for 5 hours.
[0083] (3) Loading aluminum sol: load aluminum sol on the iron-chromium-aluminum (0CR21AL6) sponge metal sheet after high temperature oxidation, and dry at 80°C for 0.8h to prepare the iron-chromium-aluminum sponge metal aluminum sol coating;
[0084] (4) Loading composite lanthanum-modified alumina (La-Al2O3) slurry: loading composite lanthanum-modified alumina (La-Al2O3) slurry on the aluminum sol coating, dried at 80°C for 2 hours, and then The tempe...
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