对加入稀土(质量分数,%)La 0～0.087的GH230合金进行了1 000℃恒温氧化实验.实验结果表明:适量La能有效地提高GH230合金的抗氧化能力和增强表面氧化膜的剥落抗力.但当合金中La含量达到0.087%时,合金中析出富La相会降低其氧化抗力.
The influence of La content on isothermal oxidation behavior of GH230 alloy at 1 000 ℃ in air was investigated. La improves not only the oxidation resistance, but also enhances oxide spallation resistance of the alloy when the content of La is from 0 to 0. 087% (mass percent). A La-riched phase was precipitated in the GH230 alloy with 0. 087% (mass percent) La, which showed a negative effect on the oxidation resistance of this alloy.
参考文献
| [1] | 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. |
| [2] | Cuefl R;Buseail H;Caudron E et al.Oxidation of Alumina Formers at 1173 K-Effect of Yttrium Ion Implantation and ttrium Alloying Addition[J].Corrosion Science,2003,45(08):1815. |
| [3] | Golightl F A;Stot F H;Wood G C .The Influence of Yttrium Additions on the Oxide-Scale Adhesion to an Iron-ChromiumAluminum Alloy[J].Oxidation of Metals,1976,10(01):163. |
| [4] | Rahmel A;Schutze M .Mechanical Aspects of the Rare-Earth Effect[J].Oxidation of Metals,1992,38(3-4):255. |
| [5] | Tawancy H M .High-Temperature Oxidation Behavior of a Wrought Ni-Cr-W-Mn-La Alloy[J].Oxidation of Metals,1996,45(03):323. |
| [6] | Geng S J;Zhu J H .Promising Alloys for Intermediate Temperature Solid Oxide Fuel Cell Interconnect Application[J].Journal of Power Sources,2006,160(04):1009. |
| [7] | Evans H E .Spallation of Oxide From Stainless Steel AGR Nuclear Fuel Cladding:Mechanisms and Consequences[J].Materials Science and Technology,1988,4(05):415. |
| [8] | E Lang.The Role of Active Elements in the Oxidation Behavior of High Temperature Metals and Alloys[M].Elsevier Applied Science:London and New York,1989 |
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