SURFACE SEGREGATION IN ALLOYS

被引：48

作者：

KUMAR, V ^{[1
]}

KUMAR, D ^{[1
]}

JOSHI, SK ^{[1
]}

机构：

[1] UNIV ROORKEE,DEPT PHYS,ROORKEE 247667,UTTAR PRADESH,INDIA

来源：

PHYSICAL REVIEW B | 1979年 / 19卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.19.1954

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a quasichemical theory to predict surface segregation in nonregular solutions. Surface concentration and surface short-range-order (SRO) parameters have been calculated for Ag-Au and Ag-Pd systems. Our results show segregation of Ag on the surface in both the systems. It is observed that the nonregular-solution model does not give results much different from the regular-solution model. However, the surface SRO parameters are significantly different from their bulk values. Surface concentrations averaged over the first few layers have also been calculated. Our results are in agreement with the results obtained from Auger electron spectroscopy. © 1979 The American Physical Society.

引用

页码：1954 / 1962

页数：9

共 47 条

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[9] SURFACE SEGREGATION IN ALLOYS - LEED, AUGER, AND GAS ADSORPTION STUDY OF SEGREGATION OF AU TO (111) SURFACE OF NI
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[10] PREDICTION OF SEGREGATION TO ALLOY SURFACES FROM BULK PHASE-DIAGRAMS
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[J]. PHYSICAL REVIEW LETTERS, 1976, 37 (21) : 1433 - 1436

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