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MEAM在表面能和表面应力中的应用

Application of MEAM in Surface Energy and Surface Stress
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摘要 介绍了一种新的EAM理论,它表述简单,而且已经成功地用于金属的氢脆、点缺陷(杂质和空位)、表面重构、合金的表面偏析和相稳定的特性的研究。模型参数通过拟合结合能、弹性常数、空位形成能等实验值来确定,并给出了晶体表面能和表面应力的计算表达式。 Simple as it is, the new embedded atom theory is applicable to metallic hydrogen brittleness, point defects (impurity and vacancy), surface reconstruction, surface segregation and phase stabilization of alloys. The model parameters are determined by the experimental values of the cohesive energy, the elastic constants and the formation energy of a vacancy while the expressions about surface energy and surface stress are given.
出处 《北京联合大学学报》 CAS 2006年第2期61-63,84,共4页 Journal of Beijing Union University
关键词 嵌入原子法 参考结构 电子密度 表面能 表面应力 embedded atom method (EAM) reference structure electron density surface energy surface stress
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参考文献10

  • 1Daw M S,Baskes M I.Semiempirical,quantum mechanical calculation of hydrogen embrittlement in metals[J].Phys Rev Lett,1983,50 (17):1285-1288.
  • 2Daw M S,Baskes M I.Embedded-atom method:derivation and application to impurities,surfaces,and other defects in metals[J].Phys Rev B,1984,29 (12):6443-6467.
  • 3Norskov J K.Covalent effects in the effective-medium theory of chemical binding:hydrogen heats of solution in the 3d metals[J].Phys Rev B,1982,26 (6):2875-2885.
  • 4Hohenberg P,Kohn W.Inhomogeneous electron gas[J].Phys Rev B,1964 (5):864-875.
  • 5Baskes M I.Modified embedded-atom potentials for cubic materials and impurities[J].Phys Rev B,1992,46 (5):2727-2742.
  • 6Dodson B W.Many-body surface strain and surface reconstructions in fcc transition metals[J].Phys Rev Lett,1988,60 (22):2288 -2291.
  • 7Brune H,Broman K,Roder H.Effect of strain on surface diffusion and nucleation[J].Phys Rev B,1995,52 (20):14380-14383.
  • 8Needs R J,Mansfield M.Calculations of the surface stress tensor and surface energy of the (111) surfaces of iridium,platinum and gold[J].Phys Condensed Matter,1989 (41):7555-7563.
  • 9Ackland G J,Finnis M W.Semi-empirical calculation of solid surface tensions in boby-centred cubic transition metals[J].Philos Mag,1986,A54(2):301-315.
  • 10Prutton M.Surface physics[M].New York:Oxford University Press,1983:1 -5.

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