Synergistic Corrosion Inhibition Effect of Molybdate and Phosphate Ions for Anodic Oxidation Film Formed on 2024 Aluminum Alloy
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摘要
In order to effectively improve the corrosion resistance of aluminum alloys, anodic oxidation technique was used to generate the oxide film. We investigated the influences of two inorganic corrosion inhibitors(ammonium dihydrogen phosphate and sodium molybdate) on the corrosion resistance of anodic oxidation films on 2024 aluminum alloy, and studied the synergistic effect of two corrosion inhibitors. The corrosion resistance of anodic oxidation film in 3.5 wt% NaCl solution was evaluated by electrochemical impedance spectroscopy(EIS) and potentiodynamic polarization curves. Results show that, after adding the single ammonium dihydrogen phosphate or sodium molybdate of 0.01 M to oxalic acid electrolyte, inhibition efficiencies of the anodized samples are 10% and 47%, respectively. However, in the presence of two inhibitors with the same concentration of 0.01 M, inhibition efficiency can be as high as 92%. Therefore, we observed the significantly synergistic corrosion inhibition effect of molybdate and phosphate ions for anodic oxidation film formed on 2024 aluminum alloy.
In order to effectively improve the corrosion resistance of aluminum alloys, anodic oxidation technique was used to generate the oxide film. We investigated the influences of two inorganic corrosion inhibitors(ammonium dihydrogen phosphate and sodium molybdate) on the corrosion resistance of anodic oxidation films on 2024 aluminum alloy, and studied the synergistic effect of two corrosion inhibitors. The corrosion resistance of anodic oxidation film in 3.5 wt% NaCl solution was evaluated by electrochemical impedance spectroscopy(EIS) and potentiodynamic polarization curves. Results show that, after adding the single ammonium dihydrogen phosphate or sodium molybdate of 0.01 M to oxalic acid electrolyte, inhibition efficiencies of the anodized samples are 10% and 47%, respectively. However, in the presence of two inhibitors with the same concentration of 0.01 M, inhibition efficiency can be as high as 92%. Therefore, we observed the significantly synergistic corrosion inhibition effect of molybdate and phosphate ions for anodic oxidation film formed on 2024 aluminum alloy.
In order to effectively improve the corrosion resistance of aluminum alloys, anodic oxidation technique was used to generate the oxide film. We investigated the influences of two inorganic corrosion inhibitors(ammonium dihydrogen phosphate and sodium molybdate) on the corrosion resistance of anodic oxidation films on 2024 aluminum alloy, and studied the synergistic effect of two corrosion inhibitors. The corrosion resistance of anodic oxidation film in 3.5 wt% NaCl solution was evaluated by electrochemical impedance spectroscopy(EIS) and potentiodynamic polarization curves. Results show that, after adding the single ammonium dihydrogen phosphate or sodium molybdate of 0.01 M to oxalic acid electrolyte, inhibition efficiencies of the anodized samples are 10% and 47%, respectively. However, in the presence of two inhibitors with the same concentration of 0.01 M, inhibition efficiency can be as high as 92%. Therefore, we observed the significantly synergistic corrosion inhibition effect of molybdate and phosphate ions for anodic oxidation film formed on 2024 aluminum alloy.
引文
[1]Song YF,Ding XF,Xiao LR,et al.Effects of Two-Stage Aging on The Dimensional Stability of Al-Cu-Mg Alloy[J].J.Alloys Compd.,2017,701:508-514
[2]Alexopoulos ND,Proiou A,Examilioti T,et al.Effect of Artificial Aging on The Mechanical Performance of(Al-Cu)2024 and(Al-CuLi)2198 Aluminum Alloys[J].Procedia Structural Integrity,2016,2:3 782-3 783
[3]Brunelli K,Magrini M,DabalàM.Method to Improve Corrosion Resistance of AA 5083 by Cerium Based Conversion Coating and Anodic Polarisation in Molybdate Solution[J].Corros.Eng.Sci.Technol.,2012,47(3):223-232
[4]Hughes AE,Markley TA,Garcia SJ,et al.Comparative Study of Protection of AA 2024-T3 Exposed to Rare Earth Salts Solutions[J].Corros.Eng.Sci.Technol.,2014,49(8):674-687
[5]Cai C,Liu XQ,Tan X,et al.A Zr-and Cr(III)-Containing Conversion Coating on Al Alloy 2024-T3 and Its Self-Repairing Behavior[J].Mater.Corros.,2017,68:338-346
[6]Lee SJ,Han MS,Kim SJ.Evaluation of Corrosion Resistance for TwoStep Aluminum Anodizing with Processing Time[J].J.Nanosci.Nanotechno.,2016,16:11 262-11 266
[7]Shen YZ,Li HG,Tao HJ,et al.Effect of Anodic Films on Corrosion Resistance and Fatigue Crack Initiator of 2060-T8 Al-Li Alloy[J].Int.J.Electrochem.Sci.,2015,10:938-946
[8]Zhang RF,Shi HW,Liu ZL,et al.Property of Anodic Coatings Obtained in An Organic,Environmental Friendly Electrolyte on Aluminum Alloy 2024-T3[J].Appl.Surf.Sci.,2014,289:326-331
[9]Li YD,Zhang Y,Li SM,et al.Influence of Adipic Ccid on Anodic Film Formation and Corrosion Resistance of 2024 Aluminum Alloy[J].T.Nonferr.Metals Soc.,2016,26:492-500
[10]Capelossi VR,Poelman M,Recloux I,et al.Corrosion Protection of Clad 2024 Aluminum Alloy Anodized in Tartaric-Sulfuric Acid Bath and Protected with Hybrid Sol-Gel Coating[J].Electrochim.Acta.,2014,124:69-79
[11]Meng XF,Wei GY,Ge HL,et al.Anodization for 2024 Al Alloy From Sulfuric-Citric Acid and Anticorrosion Performance of Anodization Films[J].Int.J.Electrochem.Sci.,2013,8:10 660-10 671
[12]Nan DU,Wang SX,Zhao Q,et al.Effects of Boric Acid on Microstructure and Corrosion Resistance of Boric/Sulfuric Acid Anodic Film on 7050 Aluminum Alloy[J].T.Nonferr.Metals Soc.,2012,22:1 655-1 660
[13]Mohammadi M,Yazdani A,Bahroliloom ME,et al.Corrosion Behavior of 2024 Aluminum Alloy Anodized in Presence of Permanganate and Phosphate Ions[J].J.Coat.Technol.Res.,2013,10:219-229
[14]Moutarlier V,Gigandet MP,Pagetti J,et al.Influence of Molybdate Species Added to Sulphuric Acid on Composition and Morphology of The Anodic Layers Formed on 2024 Aluminium Alloy[J].Thin Solid Films,2005,483:197-204
[15]Moutarlier V,Gigandet MP,Pagetti J,et al.Molybdate/Sulfuric Aacid Anodising of 2024-Aluminium Alloy:Influence of Inhibitor Concentration on Film Growth and on Corrosion Resistance[J].Surf.Coat.Technol.,2003,173:87-95
[16]Moutarlier V,Gigandet MP,Ricq L,et al.Electrochemical Characterisation of Anodic Oxidation Films Formed in Presence of Corrosion Inhibitors[J].Appl.Surf.Sci.,2001,183:1-9
[17]Moutarlier V,Gigandet MP,Normand B,et al.EIS Characterisation of Anodic Films Formed on 2024 Aluminium Alloy in Sulphuric Acid Containing Molybdate or Permanganate Species[J].Corros.Sci.,2015,47:937-951
[18]Yoganandan G,Balaraju JN.Synergistic Effect of V and Mn Oxyanions for The Corrosion Protection of Anodized Aerospace Aluminum Alloy[J].Surf.Coat.Technol.,2014,252:35-47
[19]Li LJ,Lei JL,Li D,et al.Investigations of The Synergism between Cerium Salt and Lithium Salt in the Sealing of Anodized Film of Aluminum[J].Acta Phys.-Chim.Sin.,2003,19:922-926
[20]Wang H,Wang HW.Synergistic Effect of Rare Earth Ssalt and Organic Aacid in The Anodization of Aluminum in Phosphoric Acid[J].J.Mater.Sci.,2006,41:4 759-4 763
[21]Li D,Deng YP,Guo BL,et al.Investigation of Cerium Salt/Sulfuric Acid Anodizing Technology for 1420 Aluminum Alloy[J].Mater.Sci.Forum.,2000,331(3):1 695-1 700
[22]Vargel C,Jacques M,Schmidt MP.Corrosion of Aluminium[J].Elsevier Ltd.Amsterdam,2004
[23]López V,Otero E,Bautista A,et al.Sealing of Anodic Films Obtained in Oxalic Acid Baths[J].Surf.Coat.Technol.,2000,124:76-84
[24]Dimogerontakis T,Tsangaraki-Kaplanoglou I.The Role of Aluminum Anodizing Conditions on The Effect of The Additive Light Green[J].Thin Solid Films,2002,402:121-125
[25]Dimogerontakis T,Tsangaraki-Kaplanoglou I.The Influence of Certain Sulfonic Triphenylmethane Dyes,as Additives,on Anodizing of Aluminum in Phosphoric Acid[J].Thin Solid Films,2001,385:182-189
[26]Mozalev A,Poznyak A,Mozaleva I,et al.The Voltage-Time Behaviour for Porous Anodizing of Aluminium in a Fluoride-Containing Oxalic Acid Electrolyte[J].Electrochem.Commun.,2001,3:299-305
[27]Chang JK,Liao CM,Chen CH,et al.Material Characteristics and Capacitive Properties of Aluminum Anodic Oxides Formed in Various Electrolytes[J].J.Mater.Res.,2004,19:3 364-3 373
[2]Alexopoulos ND,Proiou A,Examilioti T,et al.Effect of Artificial Aging on The Mechanical Performance of(Al-Cu)2024 and(Al-CuLi)2198 Aluminum Alloys[J].Procedia Structural Integrity,2016,2:3 782-3 783
[3]Brunelli K,Magrini M,DabalàM.Method to Improve Corrosion Resistance of AA 5083 by Cerium Based Conversion Coating and Anodic Polarisation in Molybdate Solution[J].Corros.Eng.Sci.Technol.,2012,47(3):223-232
[4]Hughes AE,Markley TA,Garcia SJ,et al.Comparative Study of Protection of AA 2024-T3 Exposed to Rare Earth Salts Solutions[J].Corros.Eng.Sci.Technol.,2014,49(8):674-687
[5]Cai C,Liu XQ,Tan X,et al.A Zr-and Cr(III)-Containing Conversion Coating on Al Alloy 2024-T3 and Its Self-Repairing Behavior[J].Mater.Corros.,2017,68:338-346
[6]Lee SJ,Han MS,Kim SJ.Evaluation of Corrosion Resistance for TwoStep Aluminum Anodizing with Processing Time[J].J.Nanosci.Nanotechno.,2016,16:11 262-11 266
[7]Shen YZ,Li HG,Tao HJ,et al.Effect of Anodic Films on Corrosion Resistance and Fatigue Crack Initiator of 2060-T8 Al-Li Alloy[J].Int.J.Electrochem.Sci.,2015,10:938-946
[8]Zhang RF,Shi HW,Liu ZL,et al.Property of Anodic Coatings Obtained in An Organic,Environmental Friendly Electrolyte on Aluminum Alloy 2024-T3[J].Appl.Surf.Sci.,2014,289:326-331
[9]Li YD,Zhang Y,Li SM,et al.Influence of Adipic Ccid on Anodic Film Formation and Corrosion Resistance of 2024 Aluminum Alloy[J].T.Nonferr.Metals Soc.,2016,26:492-500
[10]Capelossi VR,Poelman M,Recloux I,et al.Corrosion Protection of Clad 2024 Aluminum Alloy Anodized in Tartaric-Sulfuric Acid Bath and Protected with Hybrid Sol-Gel Coating[J].Electrochim.Acta.,2014,124:69-79
[11]Meng XF,Wei GY,Ge HL,et al.Anodization for 2024 Al Alloy From Sulfuric-Citric Acid and Anticorrosion Performance of Anodization Films[J].Int.J.Electrochem.Sci.,2013,8:10 660-10 671
[12]Nan DU,Wang SX,Zhao Q,et al.Effects of Boric Acid on Microstructure and Corrosion Resistance of Boric/Sulfuric Acid Anodic Film on 7050 Aluminum Alloy[J].T.Nonferr.Metals Soc.,2012,22:1 655-1 660
[13]Mohammadi M,Yazdani A,Bahroliloom ME,et al.Corrosion Behavior of 2024 Aluminum Alloy Anodized in Presence of Permanganate and Phosphate Ions[J].J.Coat.Technol.Res.,2013,10:219-229
[14]Moutarlier V,Gigandet MP,Pagetti J,et al.Influence of Molybdate Species Added to Sulphuric Acid on Composition and Morphology of The Anodic Layers Formed on 2024 Aluminium Alloy[J].Thin Solid Films,2005,483:197-204
[15]Moutarlier V,Gigandet MP,Pagetti J,et al.Molybdate/Sulfuric Aacid Anodising of 2024-Aluminium Alloy:Influence of Inhibitor Concentration on Film Growth and on Corrosion Resistance[J].Surf.Coat.Technol.,2003,173:87-95
[16]Moutarlier V,Gigandet MP,Ricq L,et al.Electrochemical Characterisation of Anodic Oxidation Films Formed in Presence of Corrosion Inhibitors[J].Appl.Surf.Sci.,2001,183:1-9
[17]Moutarlier V,Gigandet MP,Normand B,et al.EIS Characterisation of Anodic Films Formed on 2024 Aluminium Alloy in Sulphuric Acid Containing Molybdate or Permanganate Species[J].Corros.Sci.,2015,47:937-951
[18]Yoganandan G,Balaraju JN.Synergistic Effect of V and Mn Oxyanions for The Corrosion Protection of Anodized Aerospace Aluminum Alloy[J].Surf.Coat.Technol.,2014,252:35-47
[19]Li LJ,Lei JL,Li D,et al.Investigations of The Synergism between Cerium Salt and Lithium Salt in the Sealing of Anodized Film of Aluminum[J].Acta Phys.-Chim.Sin.,2003,19:922-926
[20]Wang H,Wang HW.Synergistic Effect of Rare Earth Ssalt and Organic Aacid in The Anodization of Aluminum in Phosphoric Acid[J].J.Mater.Sci.,2006,41:4 759-4 763
[21]Li D,Deng YP,Guo BL,et al.Investigation of Cerium Salt/Sulfuric Acid Anodizing Technology for 1420 Aluminum Alloy[J].Mater.Sci.Forum.,2000,331(3):1 695-1 700
[22]Vargel C,Jacques M,Schmidt MP.Corrosion of Aluminium[J].Elsevier Ltd.Amsterdam,2004
[23]López V,Otero E,Bautista A,et al.Sealing of Anodic Films Obtained in Oxalic Acid Baths[J].Surf.Coat.Technol.,2000,124:76-84
[24]Dimogerontakis T,Tsangaraki-Kaplanoglou I.The Role of Aluminum Anodizing Conditions on The Effect of The Additive Light Green[J].Thin Solid Films,2002,402:121-125
[25]Dimogerontakis T,Tsangaraki-Kaplanoglou I.The Influence of Certain Sulfonic Triphenylmethane Dyes,as Additives,on Anodizing of Aluminum in Phosphoric Acid[J].Thin Solid Films,2001,385:182-189
[26]Mozalev A,Poznyak A,Mozaleva I,et al.The Voltage-Time Behaviour for Porous Anodizing of Aluminium in a Fluoride-Containing Oxalic Acid Electrolyte[J].Electrochem.Commun.,2001,3:299-305
[27]Chang JK,Liao CM,Chen CH,et al.Material Characteristics and Capacitive Properties of Aluminum Anodic Oxides Formed in Various Electrolytes[J].J.Mater.Res.,2004,19:3 364-3 373