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＇-Fe_4N,γ＇-Fe_4N和ε-Fe_2N_(1-x)二相平衡。α-Fe(N),γ＇-Fe_4N,ε-Fe_2N_(1-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。
The 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 alpha-Fe(N) and gamma'-Fe4N, and gamma'-Fe4N and epsilon-Fe2N1-x was respectively obtained in the temperature range of 25similar to350 degreesC. The a-Fe(N), gamma'-Fe4N and epsilon-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.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2003年第4期899-903,共5页
Journal of Inorganic Materials
基金
国家自然科学基金(50241010)
关键词
Fe-N二元相图
热力学
模型
binary Fe-N phase diagram
thermodynamics
model
