AES- und XPS-Untersuchungen zum Einfluß von Chrom, Nickel und Molybdän auf das Korrosionsverhalten von rostfreien Stählen in Säuren

Knote, H.; Hofmann, S.; Fischmeister, H. F.

doi:10.1007/bf00469159

Cited by 9 publications

(3 citation statements)

References 27 publications

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“…According to the calculations, the surface concentration of iron would be larger than 0.9999 at most potentials, which means that the surface is nearly pure iron. This conflicts with the experimental data observed by Knote and coworkers [54], which indicated Cr enrichment on the surface because of the preferential dissolution of Fe. Since the model fails to predict a reasonable Cr content on the surface, the model does not capture the quantitative nature of FeCr interaction well.…”

Section: Figure 19 Reaction Steps In Active Dissolution Of Fe-cr Allcontrasting

confidence: 98%

“…The rate constants for Fe-22% Cr were given by Keddam et al and rate constants for Fe17%Cr were estimated by interpolation; estimated values are given in Table 12. Calculated steady state results are shown in Figure 80a This means the surface is nearly pure Fe, which contradicts the experimental data reported by Knote et al [54], which indicated that Cr enriched on the surface because of the preferential dissolution of Fe.…”

Section: Model Testingmentioning

confidence: 59%

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Accelerated corrosion of stainless steel in thiocyanate-containing solutions

Pistorius¹,

Li²

2012

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Section: Figure 19 Reaction Steps In Active Dissolution Of Fe-cr Allcontrasting

confidence: 98%

Section: Model Testingmentioning

confidence: 59%

Accelerated corrosion of stainless steel in thiocyanate-containing solutions

Pistorius¹,

Li²

2012

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“…The anodic dissolution of stainless steels in dilute acids has been studied using voltammetry and surface analysis [1][2][3][4][5]. Both Ni and Mo enrich on the dissolving surface, and this is the fundamental reason for the reduction in critical current density for passivation (i crit ) by these alloying elements.…”

Section: Introductionmentioning

confidence: 99%

Apparent Inversion of the Effect of Alloyed Molybdenum for Corrosion of Ordinary and Enhanced 316L Stainless Steel in Sulfuric Acid

2008

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An aging assessment of the OPG waste resin storage system predicted the potential for premature failure of the carbon steel resin liners. Consequently, resin liners made of 316L stainless steel with a minimum content of 2.5% molybdenum were selected to replace the carbon steel liners. The 2.5% Mo 316L stainless steel was specified to enhance pitting resistance in the spent resin environment. With the additional Mo, one would expect that a brief electrochemical corrosion test will reveal the superiority of such alloy over conventional 316L steel. This study reports a contrary experience.

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Oxidation of NiCr and NiCrFe alloys at room temperature

Steffen

Hofmann

1988

Surface & Interface Analysis

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The primary stages of the oxidation of NiCr23 and of NiCr21Fe12 and the final oxide layers were studied at room temperature and oxygen pressures between 10−6 Pa and 10−4 Pa using AES and XPS. The composition of the surface during oxygen exposure was monitored by continuous recording of the Auger transitions M23 VV and L3M23V of the metallic components and the KL23L23 transition of oxygen. The low energy M23VV transitions are especially indicative of the present chemical state which is additionally characterized by the 2p photoelectron spectra. After different oxygen exposures, the thickness of the oxide layers was determined by angle resolved AES, XPS results, and by sputter depth profiling which also gives the elemental in depth distribution. It is concluded that the initial preferential oxidation of Cr is followed by a surface enrichment and oxidation of the remaining elements with lower affinity to oxygen, i.e. Ni in NiCr and both Ni and Fe in NiCrFe.

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AES- und XPS-Untersuchungen zum Einfluß von Chrom, Nickel und Molybdän auf das Korrosionsverhalten von rostfreien Stählen in Säuren

Cited by 9 publications

References 27 publications

Accelerated corrosion of stainless steel in thiocyanate-containing solutions

Accelerated corrosion of stainless steel in thiocyanate-containing solutions

Apparent Inversion of the Effect of Alloyed Molybdenum for Corrosion of Ordinary and Enhanced 316L Stainless Steel in Sulfuric Acid

Oxidation of NiCr and NiCrFe alloys at room temperature

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