采用在Ni基上分别电镀Ni-Al2O3复合涂层,单Ni镀层和Ni-Y2O3复合涂层+1100℃扩散渗铬3h的方法,制备了3种渗铬涂层,并对其进行循环氧化实验.SEM分析表明:与Y2O3微米粒子相比,Al2O3纳米颗粒更加均匀分布在Ni纳米晶中,而且抑制了渗铬过程中涂层晶粒的长大.氧化实验表明:与普通渗铬涂层相比,Al2O3改性的渗铬涂层所具有的细晶结构促进了氧化初期保护性Cr2O3氧化膜的快速形成,随后涂层晶界处Al2O3抑制了Cr的外扩散,降低了氧化速度并提高涂层的抗剥落性能;微米Y2O3粒子通过溶解和重新析出来抑制渗层晶粒长大,且具有稀土活性元素的效应,从而提高渗层的抗循环氧化性能.
参考文献
| [1] | Atkinson H V .A review of the role of short-circuit diffusion in the oxidation of nickel,chromium,and nickel-chromium alloys[J].Oxidation of Metals,1985,24(03):177-197. |
| [2] | Goward G W .Protective coatings-purpose,role,and design[J].Materials Science and Technology,1986,2(03):194-200. |
| [3] | Goward G W;Boone D H .Mechanisms of formation of diffusion aluminide coatings on nickel-base superalloys[J].Oxidation of Metals,1971,3(05):475-495. |
| [4] | W. Zhou;Y.G. Zhao;W. Li;B. Tian;S.W. Hu;Q.D. Qin .Oxidation behavior of the Y2O3-modified aluminide coating on Ti–6Al–4V alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(1-2):34-38. |
| [5] | ZHOU Y B;CHEN H Y;ZHANG H J .Oxidation of an Al2O3-dispersion chromizing coating by pack-cementation at 800 ℃[J].Transactions of Nonferrous Metals Society of China,2008,18(03):598-602. |
| [6] | 张海军,周月波,胡海亭.Al2O3改性的渗铬涂层制备与氧化性能研究[J].稀有金属材料与工程,2009(09):1655-1658. |
| [7] | Zhu L;Peng X;Yan J .Oxidation of a novel chromium coating with CeO2 dispersions[J].Oxidation of Metals,2004,62(03):411-426. |
| [8] | J. Yan;X. Peng;F. Wang .Oxidation of a novel CeO_2-dispersion-strengthened chromium coating in simulated coal-combustion gases[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1/2):266-273. |
| [9] | Zhang C;Peng X;Zhao J;Wang F .Hot corrosion of an electrodeposited Ni-11 wt % Cr nanocomposite under molten Na2SO4-K2SO4-NaCl[J].Journal of the Electrochemical Society,2005(9):B321-B326. |
| [10] | Zhou YB;Chen H;Zhang H;Wang Y .Preparation and oxidation of an Y2O3-dispersed chromizing coating by pack cementation at 800 degrees C[J].Vacuum: Technology Applications & Ion Physics: The International Journal & Abstracting Service for Vacuum Science & Technology,2008(8):748-753. |
| [11] | Zhou, Y.B.;Hu, H.T.;Zhang, H.J. .Oxidation behavior of aluminide coatings on carbon steel with and without electrodeposited Ni-CeO_2 film by low-temperature pack cementation[J].Vacuum: Technology Applications & Ion Physics: The International Journal & Abstracting Service for Vacuum Science & Technology,2011(2):210-217. |
| [12] | Douglass D L .The oxidation mechanism of dilute Ni-Cr alloys[J].Corrosion Science,1968,8(10):665-678. |
| [13] | Cotekk C M;Yuerk G J;Hussey R J .The influence of grain-boundary segregation of Y in Cr2 O3 on the oxidation of Cr metal[J].Oxidation of Metals,1990,34(03):173-200. |
| [14] | Cueff R.;Buscail H.;Caudron E.;Issartel C.;Riffard F. .Oxidation behaviour of Kanthal A1 and Kanthal AF at 1173 K: effect of yttriurn alloying addition[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2003(1/4):246-254. |
| [15] | B. A. Pint .Experimental Observations in Support of the Dynamic-Segregation Theory to Explain the Reactive-Element Effect[J].Oxidation of Metals,1996(1/2):1-37. |
| [16] | Hindam H M;Whittle D P .Peg formation by short-circuit diffusion in Al2 O3 scales containing oxide dispersions[J].Journal of The Electrochemical Society,1982,129:1147-1149. |
| [17] | Hou P Y;Stringer J .The effect of reactive element additions on the selective oxidation,growth and adhesion of chromia scales[J].Rare Metal Materials and Engineering,1995,202:1-10. |
| [18] | Hou P Y;Stringer J .The influence of ion-implanted yttrium on the selective oxidation of chromium in Co-25 wt.％ Cr[J].Oxidation of Metals,1988,29(1-2):45-73. |
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