Effect of Al Layer on Oxidation Behavior of NbCrAl Coating
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摘要
NbCrAl coatings in the presence or absence of Al outer layer were prepared on C103 Nb based alloy and alumina substrate by direct current magnetron sputtering technique. The oxidation performance of coating systems was evaluated by isothermal oxidation tests. The element diffusion and oxidation behavior of the coating systems were investigated. The results indicate that the mass gains of NbCrAl and Al/NbCrAl coatings are 2.02 mg/cm~2 and 0.79 mg/cm~2 at 1 000 ℃ for short time. Al/NbCrAl coatings exhibit more effective protection than NbCrAl coatings. The addition of Al layer can improve the oxidation resistance of NbCrAl coatings, which is attributed to the Al layer offering enough Al content to react with oxygen to form a continuous and dense Al_2O_3 scale on NbCrAl coating and it can inhibit the further internal oxidation.
NbCrAl coatings in the presence or absence of Al outer layer were prepared on C103 Nb based alloy and alumina substrate by direct current magnetron sputtering technique. The oxidation performance of coating systems was evaluated by isothermal oxidation tests. The element diffusion and oxidation behavior of the coating systems were investigated. The results indicate that the mass gains of NbCrAl and Al/NbCrAl coatings are 2.02 mg/cm~2 and 0.79 mg/cm~2 at 1 000 ℃ for short time. Al/NbCrAl coatings exhibit more effective protection than NbCrAl coatings. The addition of Al layer can improve the oxidation resistance of NbCrAl coatings, which is attributed to the Al layer offering enough Al content to react with oxygen to form a continuous and dense Al_2O_3 scale on NbCrAl coating and it can inhibit the further internal oxidation.
NbCrAl coatings in the presence or absence of Al outer layer were prepared on C103 Nb based alloy and alumina substrate by direct current magnetron sputtering technique. The oxidation performance of coating systems was evaluated by isothermal oxidation tests. The element diffusion and oxidation behavior of the coating systems were investigated. The results indicate that the mass gains of NbCrAl and Al/NbCrAl coatings are 2.02 mg/cm~2 and 0.79 mg/cm~2 at 1 000 ℃ for short time. Al/NbCrAl coatings exhibit more effective protection than NbCrAl coatings. The addition of Al layer can improve the oxidation resistance of NbCrAl coatings, which is attributed to the Al layer offering enough Al content to react with oxygen to form a continuous and dense Al_2O_3 scale on NbCrAl coating and it can inhibit the further internal oxidation.
引文
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[14]Kuranishi T,Habazaki H,Konno H.Oxidation Resistant Multilayer Coatings Using an Anodic Alumina Layer as a Diffusion Barrier onγTiAl Substrates[J].Surface and Coatings Technology,2005,200:2438-2 444
[15]Tian XD,Guo XP.Structure of Al-modified Silicide Coatings on an Nb-based Ultrahigh Temperature Alloy Prepared by Pack Cementation Techniques[J].Transactions of Materials and Heat Treatment,2009,203:1 161-1 166
[16]Zhao JC,Jackson MR,Peluso LA.Evaluation of Phase Relations in the Nb-Cr-Al System at 1 000℃Using a Diffusion-multiple Approach[J].Journal of Phase Equilibria and Diffusion,2004,25:152-159
[17]Fontalvo GA,Terziysk V,Mitterer C.High Temperature Tribological Behavior of Sputtered NbNx Thin Films[J].Surface and Coatings Technology,2007,202:1017-1022
[18]Valkov S,Petro VP,Lazarova R,et al.Formation and Characterization of Al-Ti-Nb Alloys by Electron-beam Surface Alloying[J].Applied Surface Science,2016,389:768-774
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[20]Van Manen PA,Young EWA,Schalkoard D,et al.The Influence of Yon the Structure and Growth Mechanism of Alumina Scales[J].Surface and Interface Analysis,1988,12:391-396
[21]Grabke HJ.Oxidation of NiAl and FeAl[J].Intermetallics,1999,7:1 153-1 158
[22]Tabarua T,Shobua K,Sakamotoa M,et al.Effects of Substitution of Al for Si on the Lattice Variations and Thermal Expansion of Mo(Si,Al)2[J].Intermetallics,2004,12:33-41
[23]Zheng HZ,Lu SQ,Huang Y.Influence of Grain size on the Oxidation Behavior of NbCr2 Alloys at 950-1 200℃[J].Corrosion Science,2009,51:434-438
[2]Xu A,Yang Y,Li WZ,et al.Influence of Diffusion Barrier on Hot Corrosion Behavior of NiCrAlYSi Coating under Different Test Conditions[J].Journal of Central South University:Science and Technology,2016,47:730-740
[3]Li WZ,Wang QM,Gong J,et al.Oxidation of a NiCrAlYSi Overlayer with or Without a Diffusion Barrier Deposited by One-step Arc Ion Plating[J].Corrosion Science,2010,52:1 753-1 761
[4]Li SS,Song JX,Zhou CG,et al.Microstructure Evolution of NiCoCrAlY Overlayer Coating for Ni3Al Based Alloy IC6 Turbine Vane during Long Term Engine Test[J].Intermetallics,2005,13:309-314
[5]Mastanaiah M,Madhusudhan RG,Satya PK,et al.An Investigation on Microstructures and Mechanical Properties of Explosive Cladded C103Niobium Alloy Over C263 Nimonic Alloy[J].Journal of Materials Processing Technology,2014,214:2 316-2 324
[6]Perepezko JH.The Hotter the Engine,the Better[J].Science,2009,326:1 068-1 069
[7]Wang W,Zhou CG.Characterization of Microstructure and Oxidation Resistance of Y and Ge Modified Silicide Coating on Nb-Si Based Alloy[J].Corrosion Science,2016,110:114-122
[8]Benedict IP,Varma SK.Oxidation Behavior of Nb-20Mo-15Si-5B-20Ti Alloy in Air from 700 to 1 300℃[J].Journal of Alloys and Compounds,2010,497:69-73
[9]Sims CT.Niobium in Superalloys:A Perspective[J].High Temperature Technology,1984,2:185-201
[10]Vilasi M,Francois M.New Silicides for New Niobium Protective Coatings[J].Journal of Alloys and Compounds,1998,264:244-251
[11]Li WZ,Wang QM,Bao ZB,et al.Microstructure Evolution of the NiCrAlY/CrON Duplex Coating System and Its Influence on Mechanical Properties[J].Materials Science and Engineering A,2008,498:487-494
[12]Xu A,Zhou M,Yang Y,et al.Influence of CrON Diffusion Barrier on Elements Inter-diffusion between NbCrAl Coating and Nb-based Superalloy[J].Acta Aeronautica et Astronautica Sinica,2015,36(11):3734-3 741
[13]Aahley DS,Sarim AZ.Gas Turbine Performance at Varying Ambient Temperature[J].Applied Thermal Engineering,2011,31:2 735-2 739
[14]Kuranishi T,Habazaki H,Konno H.Oxidation Resistant Multilayer Coatings Using an Anodic Alumina Layer as a Diffusion Barrier onγTiAl Substrates[J].Surface and Coatings Technology,2005,200:2438-2 444
[15]Tian XD,Guo XP.Structure of Al-modified Silicide Coatings on an Nb-based Ultrahigh Temperature Alloy Prepared by Pack Cementation Techniques[J].Transactions of Materials and Heat Treatment,2009,203:1 161-1 166
[16]Zhao JC,Jackson MR,Peluso LA.Evaluation of Phase Relations in the Nb-Cr-Al System at 1 000℃Using a Diffusion-multiple Approach[J].Journal of Phase Equilibria and Diffusion,2004,25:152-159
[17]Fontalvo GA,Terziysk V,Mitterer C.High Temperature Tribological Behavior of Sputtered NbNx Thin Films[J].Surface and Coatings Technology,2007,202:1017-1022
[18]Valkov S,Petro VP,Lazarova R,et al.Formation and Characterization of Al-Ti-Nb Alloys by Electron-beam Surface Alloying[J].Applied Surface Science,2016,389:768-774
[19]Birks N,Meier GH,Pettit FS.Introduction to the High Temperature Oxidation of Metals[M].Cambridge:Cambridge University Press,2006:111-134
[20]Van Manen PA,Young EWA,Schalkoard D,et al.The Influence of Yon the Structure and Growth Mechanism of Alumina Scales[J].Surface and Interface Analysis,1988,12:391-396
[21]Grabke HJ.Oxidation of NiAl and FeAl[J].Intermetallics,1999,7:1 153-1 158
[22]Tabarua T,Shobua K,Sakamotoa M,et al.Effects of Substitution of Al for Si on the Lattice Variations and Thermal Expansion of Mo(Si,Al)2[J].Intermetallics,2004,12:33-41
[23]Zheng HZ,Lu SQ,Huang Y.Influence of Grain size on the Oxidation Behavior of NbCr2 Alloys at 950-1 200℃[J].Corrosion Science,2009,51:434-438