The Composition Variation in Evaporation of Multi-Component Alloys by Electron Beam Physical Vapor Deposition

被引：4
|
作者：
Xin, Y. [1 ]
He, X. D. [1 ]
Li, M. W. [2 ]
Sun, Y. [1 ]
机构：
[1] Harbin Inst Technol, Ctr Composite Mat, Harbin 150080, Peoples R China
[2] Harbin Inst Technol, Natl Key Lab Precis Hot Proc Met, Harbin 150001, Peoples R China
来源：
JOURNAL OF COMPUTATIONAL AND THEORETICAL NANOSCIENCE | 2008年 / 5卷 / 08期
关键词：
EB-PVD; Multi-Component Alloy; Activity Coefficients; Evaporation Rate; Composition Variation;
D O I：
10.1166/jctn.2008.855
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In recent years, multi-component alloys prepared by EB-PVD technology have been used in many fields. Kinetics and thermodynamics in evaporation of multi-component alloy are carried out for choosing better technological parameters to control the composition variation. Wilson equation and Miedema expanded model are applied to calculate the activity of each component, on basis of which a mathematical model is presented providing the change of the activity and the composition of the molten pool and vapor in dependence on the evaporation time and determining the transient time for vapor composition to reach a balance. A special Ni-Fe-Cr-Al alloy is fabricated by EB-PVD and the composition of molten pool and along thickness is measured. The calculated results are in agreement with experimental data.
引用
收藏
页码：1696 / 1699
页数：4
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