Nonlinear surface processes under nonequilibrium TiNi activation by a pulsed electron beam

被引：2
作者：
Tyan A.V. [1 ]
Knyazeva A.G. [2 ]
Psakhie S.G. [2 ]
机构：
[1] Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences
来源：
Russian Physics Journal | 2007年 / 50卷 / 3期
关键词：
Oxygen Concentration; TiNi; Diffusion Zone; TiNi Alloy; Pulse Electron Beam;
D O I：
10.1007/s11182-007-0029-0
中图分类号：
学科分类号：
摘要：
Nonlinear processes involved in oxygen diffusion from the adsorption layer into the bulk of an alloy exposed to a low-energy high-current pulsed electron beam are investigated in the framework of a mathematical model accounting for nonequilibrium activation and melting of the irradiated material. An example is a TiNi alloy. The model includes heat, diffusion, and kinetic equations, with initial and boundary conditions corresponding to electron-beam treatment of the alloy. Kinetic parameters are estimated. The time and space distributions of the TiNi temperature and oxygen concentration for a varying maximum pulse power density and pulse duration are calculated. The heating and diffusion depths are determined. The results obtained with and without regard to the activation effect are compared. © 2007 Springer Science+Business Media, Inc.
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页码：204 / 212
页数：8
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