| 低温区间的Fe-N二元相图理论分析 |
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| 引用本文： | 雷明凯,王兴军. 低温区间的Fe-N二元相图理论分析[J]. 无机材料学报, 2003, 18(4): 899-903 |
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| 作者姓名： | 雷明凯 王兴军 |
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| 作者单位： | 大连理工大学材料工程系表面工程研究室 大连 116024 |
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| 基金项目： | 国家自然科学基金(50241010) |
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| 摘 要： | 采用亚点阵的化合物能模型计算低温区间Fe-N二元相图。计算结果表明,25～350℃低温区,分别存在着α-Fe(N)和γ＇-Fe4N,γ＇-Fe4N和ε-Fe2N1-x二相平衡。α-Fe(N),γ＇-Fe4N,ε-Fe2N1-x均为热力学稳定相。依据Guillermet和Du的热力学性质参数计算的低温区间Fe-N二元相图与现有实验数据相符。
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| 关 键 词： | Fe-N二元相图 热力学 模型 |
| 文章编号： | 1000-324X(2003)04-0899-05 |
| 收稿时间： | 2002-06-05 |
| 修稿时间： | 2002-06-05 |
Theoretical Analysis of Binary Fe-N Phase Diagrams at Low Temperatures |
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| LEI Ming-Kai,WANG Xing-Jun. Theoretical Analysis of Binary Fe-N Phase Diagrams at Low Temperatures[J]. Journal of Inorganic Materials, 2003, 18(4): 899-903 |
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| Authors: | LEI Ming-Kai WANG Xing-Jun |
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| Affiliation: | Surface Engineering Laboratory; Department of Materials Engineering; Dalian University of Technology; Dalian 116024; China |
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| Abstract: | he binary Fe-N phase diagrams at the low temperatures were calculated by using a two-sublattice version of the Compound Energy Model (CEM). The phase equilibrium of α-Fe(N) and γ’-Fe4N, and γ-Fe4N and ε-Fe2N1-x was respectively obtained in the temperature range of 25～350 ℃. The α-Fe(N), γ’-Fe4N, and ε-Fe2N1-x phases are thermodynamically stable at the low temperatures. The calculated binary Fe-N phase diagram by using the Guillermet and Du’s parameters describing the thermodynamic properties of Fe-N phases was confirmed from the available experimental data at the low temperatures. |
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| Keywords: | binary Fe-N phase diagram thermodynamics model |
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