| Internal oxidation thermodynamics and microstructures of Ag-Y alloy |
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| 引用本文： | 吴春萍 易丹青 陈敬超 李荐 刘会群 王斌 方西亚. Internal oxidation thermodynamics and microstructures of Ag-Y alloy[J]. 中国有色金属学会会刊, 2007, 17(2): 262-266. DOI: 10.1016/S1003-6326(07)60082-X |
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| 作者姓名： | 吴春萍 易丹青 陈敬超 李荐 刘会群 王斌 方西亚 |
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| 作者单位： | School of Materials Science and Engineering Central South University，School of Materials Science and Engineering Central South University，Key Laboratory of Advanced Materials of Yunan Province Kunming University of Science and Technology，School of Materials Science and Engineering Central South University，School of Materials Science and Engineering Central South University，School of Materials Science and Engineering Central South University，School of Materials Science and Engineering Central South University，Changsha 410083，China，Changsha 410083，China，Kunming 650093 China，Changsha 410083，China，Changsha 410083，China，Changsha 410083，China，Changsha 410083，China |
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| 基金项目： | Project（2006BAE03B03） supported by the National Science and Technology Program of China |
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| 摘 要： | The thermodynamic data of pure Ag and Y were calculated. The phase constitution, composition of micro-region and microstructures of Ag-Y alloy after internal oxidation were investigated by X-ray diffractometry(XRD), energy dispersion spectrometry(EDS) and scanning electron microscopy(SEM). The results show that the internal oxidation behavior of Ag-Y alloy is feasible from the view of thermodynamics. The upper limit of oxygen partial pressure of Ag-Y alloy oxidation is a function of temperature. Two phases (Ag and Y2O3) appear in Ag-Y alloy after the internal oxidation. The surface of Ag-Y alloy is convex because of the volume expansion of oxide in the alloy and the composition of the convex part is Ag. In Ag-Y2O3 sintered bulk Y2O3 particles are distributed inhomogeneously and conglomerated seriously, but they are dispersed uniformly in the Ag matrix after severe plastic deformation.
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| 关 键 词： | Ag-Y合金 内氧化 热力学性质 显微结构 |
| 收稿时间： | 2006-05-08 |
| 修稿时间： | 2006-11-01 |
Internal oxidation thermodynamics and microstructures of Ag-Y alloy |
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| WU Chun-ping,YI Dan-qing,CHEN Jing-chao,LI Jian,LIU Hui-qun,WANG Bin,FANG Xi-ya. Internal oxidation thermodynamics and microstructures of Ag-Y alloy[J]. Transactions of Nonferrous Metals Society of China, 2007, 17(2): 262-266. DOI: 10.1016/S1003-6326(07)60082-X |
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| Authors: | WU Chun-ping YI Dan-qing CHEN Jing-chao LI Jian LIU Hui-qun WANG Bin FANG Xi-ya |
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| Affiliation: | 1. School of Materials Science and Engineering, Central South University, Changsha 410083, China;2. Key Laboratory of Advanced Materials of Yunan Province, Kunming University of Science and Technology, Kunming 650093, China |
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| Abstract: | The thermodynamic data of pure Ag and Y were calculated. The phase constitution, composition of micro-region and microstructures of Ag-Y alloy after internal oxidation were investigated by X-ray diffractometry(XRD), energy dispersion spectrometry(EDS) and scanning electron microscopy(SEM). The results show that the internal oxidation behavior of Ag-Y alloy is feasible from the view of thermodynamics. The upper limit of oxygen partial pressure of Ag-Y alloy oxidation is a function of temperature. Two phases (Ag and Y2O3) appear in Ag-Y alloy after the internal oxidation. The surface of Ag-Y alloy is convex because of the volume expansion of oxide in the alloy and the composition of the convex part is Ag. In Ag-Y2O3 sintered bulk Y2O3 particles are distributed inhomogeneously and conglomerated seriously, but they are dispersed uniformly in the Ag matrix after severe plastic deformation. |
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| Keywords: | Ag-Y alloy internal oxidation thermodynamics microstructure |
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