Effect of annealing on interior Vickers hardness and surface work function of light alloys
Effect of annealing on interior Vickers hardness and surface work function of light alloys
复制标题
退火对轻合金内维氏硬度和表面功函数的影响
DOI：
10.1088/2053-1591/ab470a
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发表时间：
2019-10
影响因子：
2.3
通讯作者：
Wang Fajun
中科院分区：
文献类型：
--
作者：
Ou Junfei;Xue Mingshan;Wang Fajun
随着外部环境的变化，如何明确内部和表面性质的相应变化及其相互关系，具有重要的基础和现实意义。本研究通过不同温度退火，研究了镁铝合金的内部维氏硬度（HV）和表面功函数（SWF）之间的相关性。随着退火温度的升高，HV和SWF呈现相反的变化趋势。例如，对于镁合金，随着退火温度从200℃升高到500℃，HV逐渐从131kgmm−2下降到52kgmm−2，相应地，SWF从4.22eV增加到4.44eV。这是因为退火过程使合金容易变形，增加了它们的延展性并降低了它们的硬度。退火后的表面氧化层使自由电子与表面静电场之间产生更强的静电相互作用，限制了自由电子从费米能级逃逸到真空能级，导致SWF增加。 SWF和HV之间的这种相关性将有助于理解各种材料的表面和内部特性之间的内在关系。
With the change of external environment, how to clarify the corresponding change of the interior and surface properties as well as their relationship is of both fundamental and practical significance. In this study, the correlation between the interior Vickers hardness (HV) and surface work function (SWF) of Mg and Al alloys was investigated by annealing at different temperature. With the increase of annealing temperature, the contrary change trend of the HV and the SWF was found. For example, for Mg alloys, the HV gradually decreased from 131 kg mm−2 to 52 kg mm−2 with the increase of annealing temperature from 200 °C to 500 °C, accordingly, the SWF increased from 4.22 eV to 4.44 eV. It was in that the annealing process allowed the alloys deform easily, increasing their ductility and decreasing their hardness. After annealing the surface oxidation layers brought the stronger electrostatic interaction between the free electrons and surface electrostatic field, and limited the escape of free electrons from the Fermi level to the vacuum level, resulting in the increase of the SWF. Such a correlation between the SWF and the HV will be of much help to understand the inherent relations between the surface and interior properties of all kinds of materials.
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影响因子：
4.6
作者：
Chen Y;Zhao C;Huang F;Zhan R;Deng S;Xu N;Chen J
通讯作者：
Chen J
DOI：
--
发表时间：
1978-07
期刊：
Deutsche zahnarztliche Zeitschrift
影响因子：
--
作者：
H. Marx;P. Houcken
通讯作者：
H. Marx;P. Houcken
影响因子：
3.9
作者：
R. Yamada;T. Tagami;S. Nishimura;Hisatoshi Ito
通讯作者：
R. Yamada;T. Tagami;S. Nishimura;Hisatoshi Ito
表面粗糙度对AZ31镁合金电子逸出功的影响及其相关性
影响因子：
6.2
作者：
Xue Mingshan;Yao Yao;Ou Junfei;Wang Fajun;Qu Yao;Li Wen
通讯作者：
Li Wen
影响因子：
8.3
作者：
Youssef, Khaled M.;Zaddach, Alexander J.;Koch, Carl C.
通讯作者：
Koch, Carl C.