| Kinetic equation for internal oxidation of Cu-Al alloy cylinders |
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| 作者姓名： | KexingSong JiandongXing BaohongTian PingLiu QimingDong |
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| 作者单位： | [1]SchoolofMaterialsScienceandEngineering,HenanUniversityofScienceandTechnology,Luoyang471003,China [2]StateKeyLaboratoryforMechanicalBehaviorofMaterials,Xi＇anJiaotongUniversity,Xi＇an710049,China／／SchoolofMaterialsScienceandEngineering,HenanUniversityofScienceandTechnology,Luoyang471003,China [3]StateKeyLaboratoryforMechanicalBehaviorofMaterials,Xi＇anJiaotongUniversity,Xi＇an710049,China |
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| 摘 要： | The kinetics of internal oxidation of Cu-A1 alloy cylinders, containing up to 2.214mol% A1, were investigated in the temperature range of 1023 K to 1273 K, and the depth of internal oxidation was measured in the microscopy. A kinetic equation was derived to describe the internal oxidation of Cu-A1 alloy cylinders. For the internal oxidation of Cu-Al alloys employed in the synthesis of alumina dispersion strengthened copper, the kinetic equation can be simplified. The derived equation was checked experimentally by means of oxidation depth measurements and the results show that the derived equation is exact enough to describe the kinetics of internal oxidation of Cu-Al alloy cylinders. Based on this equation and the oxidation depth measurements, the permeability of oxygen in solid copper was obtained. Investigation also shows that there is no evidence for preferential diffusion along grain boundaries in the process of internal oxidation.
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| 关 键 词： | 动力平衡 汽缸 铜铝合金 内部氧化 显微结构 |
Kinetic equation for internal oxidation of Cu-Al alloy cylinders |
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| KexingSong JiandongXing BaohongTian PingLiu QimingDong.Kinetic equation for internal oxidation of Cu-Al alloy cylinders[J].Journal of University of Science and Technology Beijing,2005,12(3):262-266. |
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| Authors: | Kexing Song Jiandong Xing Baohong Tian Ping LIU Qiming DONG |
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| Abstract: | The kinetics of internal oxidation of Cu-Al alloy cylinders, containing up to 2.214mol% Al, were investigated in the temperature range of 1023 K to 1273 K, and the depth of internal oxidation was measured in the microscopy. A kinetic equation was derived to describe the internal oxidation of Cu-Al alloy cylinders. For the internal oxidation of Cu-Al alloys employed in the synthesis of alumina dispersion strengthened copper, the kinetic equation can be simplified. The derived equation was checked experimentally by means of oxidation depth measurements and the results show that the derived equation is exact enough to describe the kinetics of internal oxidation of Cu-Al alloy cylinders. Based on this equation and the oxidation depth measurements, the permeability of oxygen in solid copper was obtained. Investigation also shows that there is no evidence for preferential diffusion along grain boundaries in the process of internal oxidation. |
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| Keywords: | kinetic equation cylinder Cu-Al alloys internal oxidation |
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