Effect of Mg or Ag addition on the evaporation field of Al

被引：4

作者：

Aruga, Yasuhiro ^{[1
]}

Nako, Hidenori ^{[1
]}

Tsuneishi, Hidemasa ^{[2
]}

Hasegawa, Yuki ^{[2
]}

Tao, Hiroaki ^{[3
]}

Ichihara, Chikara ^{[3
]}

Serizawa, Ai ^{[4
]}

机构：

[1] Kobe Steel Ltd, Mat Res Lab, Nishi Ku, Kobe, Hyogo 6512271, Japan

[2] Kobelco Res Inst Inc, Div Elect, Nishi Ku, Kobe, Hyogo 6512271, Japan

[3] Kobe Steel Ltd, Elect Res Lab, Nishi Ku, Kobe, Hyogo 6512271, Japan

[4] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA

来源：

ULTRAMICROSCOPY | 2013年 / 132卷

关键词：

Atom probe tomography; Evaporation field; Image force model; Work function; Binding energy; Al alloy; 3D ATOM-PROBE; TEMPERATURE; IONS;

D O I：

10.1016/j.ultramic.2012.10.011

中图分类号：

TH742 [显微镜];

学科分类号：

摘要：

It is known that the distribution of the charge-states as well as the evaporation field shift to higher values as the specimen temperature is decreased at a constant rate of evaporation. This study has explored the effect of Mg or Ag addition on the evaporation field of Al in terms of the charge state distribution of the field evaporated Al ions. The fractional abundance of Al2+ ions with respect to the total Al ions in Al-Mg alloy is lower than that in pure Al, whereas it shows higher level in the Al-Ag alloy at lower temperatures. The temperature dependence of the fractional abundance of Al2+ ions has been also confirmed, suggesting that Al atoms in the Al-Mg alloy need lower evaporation field, while higher field is necessary to evaporate Al atoms in the Al-Ag alloy, compared with pure Al. This tendency is in agreement with that of the evaporation fields estimated theoretically by means of measurements of the work function and calculations of the binding energy of the pure Al, Al-Mg and Al-Ag alloys. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：31 / 35

页数：5

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