Quantitative Auger spectroscopic analysis of segregation of phosphorus in iron

Shell, Colin; Riviére, J.C.

doi:10.1016/0039-6028(73)90058-7

Cited by 46 publications

(5 citation statements)

References 3 publications

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“…These features provide iron phosphides (nano)structures with a large variety of magnetic, catalytic, and electronic properties that can be exploited for a myriad of applications. , The presence of phosphorus on the surface of iron modifies its interaction with deposited molecules, , and plays an important role in corrosion protection and heterogeneous catalysis. The segregation of phosphorus at grain boundaries enhances the intergranular embrittlement of iron, − and increases the probability of intercrystalline fractures. , Phosphorus is a key element in the composition of extreme pressure lubricant additives used in engine oils . The formation of P-rich iron tribofilms is connected to the friction-reduction and wear-protection properties of steel-on-steel sliding contacts for reasons that are still unclear at the atomic level.…”

Section: Introductionmentioning

confidence: 99%

Phosphorus Adsorption on Fe(110): An ab Initio Comparative Study of Iron Passivation by Different Adsorbates

et al. 2018

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From corrosion protection to embrittlement and lubrication, the presence of phosphorus at iron surfaces is critical for a range of processes and applications. However, phosphorus adsorption on iron has never been studied experimentally or theoretically. Here P chemisorption on the most stable surface of iron is analyzed by means of density functional theory. The most stable adsorption geometry and coverage are identified, and the changes induced by P adsorption on the structural and electronic properties of the metal are discussed. A systematic comparison among P, S, N, and O uncovers a peculiar behavior of the P and S species: attractive adatom–adatom interactions at high coverage lead to the formation of two-dimensional overlayers that reduce the metal reactivity and work function. This effect is important in iron embrittlement and for the functionality of P- and S-containing additives included in lubricant oils.

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Section: Introductionmentioning

confidence: 99%

Phosphorus Adsorption on Fe(110): An ab Initio Comparative Study of Iron Passivation by Different Adsorbates

et al. 2018

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“…Similar to the SCHCT samples, the H segregation effect is clearly illustrated also in this case. Surprisingly, a good fit of Eqn (9) to the experimental data has been obtained (with somewhat higher segregation rate constants) in spite of the anticipated inhomogeneous distribution of H in the near-surface region.…”

Section: (7)mentioning

confidence: 74%

“…3) and ZH(co) could not be evaluated experimentally. Instead, it was adjusted as a fitted parameter when the experimental data were fitted to Eqn (9). The value of ZH(0) was also adjusted as a fitted parameter owing to the uncertainty in the initial time scale introduced by the finite time interval of the oxygen exposure duration (see discussion at the beginning of this section).…”

Section: (7)mentioning

confidence: 99%

Oxygen‐induced surface segregation of hydrogen in polycrystalline titanium

Azoulay

Atzmony²,

Mintz

et al. 1992

Surface & Interface Analysis

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Oxygen-induced surface segregation of hydrogen has been investigated in polycrystalline titanium. It was found that sulphur impurities in titanium preferentially segregate to the surface on heating the sample. Consequently, the properties and reactivity of the sulphur-containing surfaces were modified relative to sulphur-free samples in a way which enabled the performance of quantitative kinetic segregation measurements utilizing direct recoil spectrometry (DRS). The time behaviour of hydrogen accumulation on the surface pointed to a segregation mechanism involving subsurface-to-surface hopping as the rate-determining step.

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“…Auger Electron Spectroscopy. This technique has been used to study the segregation of phosphorus in iron (469). POTASSIUM Both neutron activation (146) and flame photometry (353) have been used for the analysis of ores and ferrosilicon, respectively.…”

Section: Phosphorusmentioning

confidence: 99%

“…Auger electron spectroscopy continues to find application to surface analysis in the areas of diffusion phenomena (43,469), friction and wear surfaces (87), passive films on stainless steel (375), and intergranular fracture (428). Other applications reported in the literature include the determination of oxygen (373) and adsorbed tin on iron (465).…”

Section: Spectrometrymentioning

confidence: 99%