| 三维原子探针对Ni_4Mo合金的研究 |
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| 引用本文： | 刘文庆,刘庆冬,周邦新. 三维原子探针对Ni_4Mo合金的研究[J]. 稀有金属材料与工程, 2008, 37(10) |
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| 作者姓名： | 刘文庆 刘庆冬 周邦新 |
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| 作者单位： | 上海大学,上海,200444 |
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| 基金项目： | 上海市纳米科技专项基金 |
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| 摘 要： | 用带场离子显微镜(FIM)功能的三维原子探针(3DAP)对Ni4Mo有序合金进行研究,并测试脉冲分数对试验结果的影响.观察到Ni4Mo有序合金中存在反相畴界.当脉冲分数为20%时,3DAP能比较准确地对纳米空间中的Ni元素和Mo元素进行定量分析,并能给出空间位置分辨率较高的三维分布图形.当脉冲分数小于20%时,脉冲分数越低,3DAP测得的结果与真实成分的偏差越大.脉冲分数对元素同位素丰度和元素电离价态的测量结果没有影响.
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| 关 键 词： | 三维原子探针 Ni4Mo有序合金 脉冲分数 |
Study on Ni_4Mo Alloy by Three Dimensional Atom Probe |
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| Liu Wenqing,Liu Qingdong,Zhou Bangxin. Study on Ni_4Mo Alloy by Three Dimensional Atom Probe[J]. Rare Metal Materials and Engineering, 2008, 37(10) |
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| Authors: | Liu Wenqing Liu Qingdong Zhou Bangxin |
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| Affiliation: | Liu Wenqing,Liu Qingdong,Zhou Bangxin(Shanghai University,Shanghai 200444,China) |
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| Abstract: | Three dimensional atom probe (3DAP) with field ion microscope (FIM) was used to investigate Ni4Mo ordered alloy and the effect of pulse fraction on the experimental results obtained from 3DAP was studied. Antiphase boundary was observed in the alloy by FIM. An accurate chemical composition of Ni and Mo within a nano-space and a three dimensional atom position map with higher resolution were obtained at 20% pulse fraction. However, with the pulse fraction below 20%, the disparity between measured composition... |
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| Keywords: | three dimensional atom probe (3DAP) Ni4Mo ordered alloy pulse fraction |
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