| 脉冲电子束辐照中增强扩散效应的数值计算 |
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| 引用本文： | 邹建新,刘振民,吴爱民,秦颖,王晓钢,董闯.脉冲电子束辐照中增强扩散效应的数值计算[J].材料热处理学报,2003,24(2):70-74. |
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| 作者姓名： | 邹建新 刘振民 吴爱民 秦颖 王晓钢 董闯 |
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| 作者单位： | 大连理工大学三束材料表面改性国家重点实验室,辽宁,大连,116024 |
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| 摘 要： | 针对强流脉冲电子束(HCPEB)表面改性的特点，采用适当的数学模型和数值模拟的方法，对9Cr18钢经Ti离子注入后又使用强流脉冲电子束表面辐照处理中产生的增强扩散效应进行了研究，计算结果与实验结果较为吻合。分析表明，扩散激活能的下降是导致增强扩散的主要原因，这与HCPEB改性过程产生的非平衡辐照缺陷浓度密切相关。
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| 关 键 词： | 强流脉冲电子束 增强扩散 数值模拟 表面改性 |
| 文章编号： | 1009-6264(2003)02-0070-05 |
Calculation and Experimental Determination of Enhanced Diffusion Effect Under Irradiation of Pulsed Electron Beam |
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| ZOU Jian\|xin,LIU Zhen\|min,WU Ai\|min,QIN Ying,WANG Xiao\|gang,DONG Chuang.Calculation and Experimental Determination of Enhanced Diffusion Effect Under Irradiation of Pulsed Electron Beam[J].Transactions of Materials and Heat Treatment,2003,24(2):70-74. |
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| Authors: | ZOU Jian\|xin LIU Zhen\|min WU Ai\|min QIN Ying WANG Xiao\|gang DONG Chuang |
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| Abstract: | Numerical simulation was carried out to describe the enhanced diffusion effect associated with the bombardment of High Current Pulsed Electron Beam (HCPEB). It is shown that the reduced diffusion activation energy is one of the main reasons that lead to the enhanced diffusion. This decrease is related to high concentrations of non equilibrium defects induced by the HCPEB irradiation post treatment. The experimental results from a Ti implanted 9Cr18 steel post treated with HCPEB irradiations are compared with the calculated results. |
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| Keywords: | HCPEB enhanced diffusion numerical simulation |
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