Lead segregation at clean and oxygen-covered surfaces of Al-0.01%Pb solid solution

S. Aloni; M. Polak

doi:10.1016/0039-6028(95)01333-4

Lead segregation at clean and oxygen-covered surfaces of Al-0.01%Pb solid solution

S. Aloni
, M. Polak

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

The surface composition of A1-0.01at%Pb solid solution was studied between 300 and 700 K using low-energy Auger electron spectroscopy. Lead segregates strongly at the clean surfaces of this alloy (X_s = 0.55 at equilibrium), while above ∼ 550 K evaporation effects become dominant. Pre-adsorbed oxygen retards the segregation, but eventually, being more surface-active on A1, Pb atoms displace a large fraction of the surface oxygen. Thermodynamic aspects of the observed phenomena are discussed.

Original language	English
Pages (from-to)	L123-L127
Journal	Surface Science
Volume	349
Issue number	1
DOIs	https://doi.org/10.1016/0039-6028(95)01333-4
State	Published - 20 Mar 1996

Keywords

Aluminum
Auger electron spectroscopy
Equilibrium thermodynamics and statistical mechanics
Lead
Solid-gas interfaces
Surface segregation

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/0039-6028(95)01333-4

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title = "Lead segregation at clean and oxygen-covered surfaces of Al-0.01\%Pb solid solution",

abstract = "The surface composition of A1-0.01at\%Pb solid solution was studied between 300 and 700 K using low-energy Auger electron spectroscopy. Lead segregates strongly at the clean surfaces of this alloy (Xs = 0.55 at equilibrium), while above ∼ 550 K evaporation effects become dominant. Pre-adsorbed oxygen retards the segregation, but eventually, being more surface-active on A1, Pb atoms displace a large fraction of the surface oxygen. Thermodynamic aspects of the observed phenomena are discussed.",

keywords = "Aluminum, Auger electron spectroscopy, Equilibrium thermodynamics and statistical mechanics, Lead, Solid-gas interfaces, Surface segregation",

author = "S. Aloni and M. Polak",

year = "1996",

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language = "English",

volume = "349",

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TY - JOUR

T1 - Lead segregation at clean and oxygen-covered surfaces of Al-0.01%Pb solid solution

AU - Aloni, S.

AU - Polak, M.

PY - 1996/3/20

Y1 - 1996/3/20

N2 - The surface composition of A1-0.01at%Pb solid solution was studied between 300 and 700 K using low-energy Auger electron spectroscopy. Lead segregates strongly at the clean surfaces of this alloy (Xs = 0.55 at equilibrium), while above ∼ 550 K evaporation effects become dominant. Pre-adsorbed oxygen retards the segregation, but eventually, being more surface-active on A1, Pb atoms displace a large fraction of the surface oxygen. Thermodynamic aspects of the observed phenomena are discussed.

AB - The surface composition of A1-0.01at%Pb solid solution was studied between 300 and 700 K using low-energy Auger electron spectroscopy. Lead segregates strongly at the clean surfaces of this alloy (Xs = 0.55 at equilibrium), while above ∼ 550 K evaporation effects become dominant. Pre-adsorbed oxygen retards the segregation, but eventually, being more surface-active on A1, Pb atoms displace a large fraction of the surface oxygen. Thermodynamic aspects of the observed phenomena are discussed.

KW - Aluminum

KW - Auger electron spectroscopy

KW - Equilibrium thermodynamics and statistical mechanics

KW - Lead

KW - Solid-gas interfaces

KW - Surface segregation

UR - https://www.scopus.com/pages/publications/0030104157

U2 - 10.1016/0039-6028(95)01333-4

DO - 10.1016/0039-6028(95)01333-4

M3 - Article

AN - SCOPUS:0030104157

SN - 0039-6028

VL - 349

SP - L123-L127

JO - Surface Science

JF - Surface Science

IS - 1

ER -

Lead segregation at clean and oxygen-covered surfaces of Al-0.01%Pb solid solution

Abstract

Keywords

ASJC Scopus subject areas

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