| Oxidation Properties in CO2 of Inconel Alloy 600 Coated by Simultaneous Aluminizing-Chromizing Process |
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| 作者姓名： | Ahmed Moos Jalil Karim Ahmed Ali Hoobi |
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| 作者单位： | The University of Technology Baghdad-Iraq，Ministry of Labor and Social Affairs Baghdad-Iraq，Ministry of Science and Technology Baghdad-Iraq |
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| 基金项目： | Iraqi International Center for Science and Industry (IICSI, 2005-1) |
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| 摘 要： | IN 600 alloy was coated with two different types of coatings, Cr-modified aluminide coating this is called aluminizing-chromizing and Y-doped chromium modified aluminide coating this is called aluminizing-chromizing-yttriumizing. Diffusion coating was carried at 1 050 ℃ for 8 h under Ar atmosphere by simultaneous aluminizing-chromizing process and by simultaneous aluminizing-chromizing- yttriumizing. Cyclic oxidation tests were conducted on the uncoated and on the coated Inconel 600 alloy in the temperature range 800- 1 000 ℃ in CO2 for 100 h at 10 h cycle.The results showed that the oxidation kinetics for uncoated Inconel 600 alloy in CO2 is parabolic and the phases present are NiO, (Fe, Cr)2O3 , NiFe2O4 and NiCrO4. The oxidation kinetics for both coated systems in CO2 was found to be parabolic and the value of kP for both coated systems were found to be lower than that for uncoated Inconel 600 alloy. Oxide phases that formed on coated systems are Al2O3 and NiCrO4. The role of yttrium can be attributed to its ability to improve the adherence of the oxide scale.
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| 关 键 词： | 氧化物 扩散结合 铝处理技术 高温合金 |
| 收稿时间： | 10 August 2006 |
| 修稿时间： | 2006-08-102006-11-20 |
Oxidation Properties in CO2 of Inconel Alloy 600 Coated by Simultaneous Aluminizing-Chromizing Process |
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| Ahmed Moos Jalil Karim Ahmed Ali Hoobi.Oxidation Properties in CO2 of Inconel Alloy 600 Coated by Simultaneous Aluminizing-Chromizing Process[J].Chinese Journal of Aeronautics,2007,20(2):134-139. |
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| Authors: | Ahmed Moosa Jalil Karim Ahmed Ali Hoobi |
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| Institution: | 1. The University of Technology, Baghdad-Iraq;2. Ministry of Labor and Social Affairs, Baghdad-Iraq;3. Ministry of Science and Technology, Baghdad-Iraq |
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| Abstract: | IN 600 alloy was coated with two different types of coatings, Cr-modified aluminide coating this is called aluminizing-chromizing and Y-doped chromium modified aluminide coating this is called aluminizing-chromizing-yttriumizing. Diffusion coating was carried at 1 050 ℃ for 8 h under Ar atmosphere by simultaneous aluminizing-chromizing process and by simultaneous aluminizing-chromizingyttriumizing. Cyclic oxidation tests were conducted on the uncoated and on the coated Inconel 600 alloy in the temperature range 800-1 000 ℃ in CO2 for 100 h at 10 h cycle. The results showed that the oxidation kinetics for uncoated Inconel 600 alloy in CO2 is parabolic and the phases present are NiO, (Fe, Cr)2O3, NiFe2O4 and NiCrO4. The oxidation kinetics for both coated systems in CO2 was found to be parabolic and the value of kP for both coated systems were found to be lower than that for uncoated Inconel 600 alloy. Oxide phases that formed on coated systems are Al2O3 and NiCrO4. The role of yttrium can be attributed to its ability to improve the adherence of the oxide scale. |
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| Keywords: | Inconel oxidation diffusion bonding aluminizing-chromizing Ni-superalloy |
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