The inhibition of pitting corrosion of stainless steels by chromate and molybdate ions

Ilevbare, G. O.; Burstein, G.T.

doi:10.1016/s0010-938x(02)00229-9

Cited by 199 publications

(113 citation statements)

References 23 publications

Supporting

Mentioning

107

Contrasting

Order By: Relevance

“…49 Pure Mo has been purported to form a protective MoO 2 -based passive film or can generate MoO 4 2-species, which could reduce to the MoO 2 film at pit sites. 50,51 Elemental Mo can also favour pit repassivation in stainless steels. 52 However in HEAs/CCAs, Mo tends to form a Mo and Cr-rich sigma (σ) phase, 53,54 which could remove both Cr and Mo from the alloy matrix.…”

Section: The Influence Of Different Alloying Elements On the Corrosiomentioning

confidence: 99%

Corrosion of high entropy alloys

Qiu¹,

Thomas²,

Gibson³

et al. 2017

npj Mater Degrad

366

133

View full text Add to dashboard Cite

High entropy alloys represent a unique class of metal alloys, comprising nominally five or more elements in near equiatomic proportions. High entropy alloys have gained significant interest on the basis that the high configurational entropy of such alloy systems is purported to result in a single-phase solid solution structure. While such a single-phase structure can occur in unique systems, it is now appreciated that the definition of high entropy alloys can be broader, with systems comprising only four elements possible of forming single phases, and most five (or more) element systems actually being multi (>2) phases. To this end, the notion of compositionally complex alloys is a more general description, with the concise review herein focusing on the corrosion of compositionally complex alloys (inclusive of high entropy alloys). It is noted that generally, in spite of complex compositions and in many cases complicated microstructural heterogeneity, compositionally complex alloys are nominally corrosion-resistant. This is discussed and aspects of the status and needs are presented.

show abstract

Section: The Influence Of Different Alloying Elements On the Corrosiomentioning

confidence: 99%

Corrosion of high entropy alloys

Qiu¹,

Thomas²,

Gibson³

et al. 2017

npj Mater Degrad

366

133

View full text Add to dashboard Cite

show abstract

“…Despite the marked reductions in the occurrence of meta-stable pits by the presence of the inhibitors, stable pitting still occurs. This signifies that not all the sites on the metals are prevented from generating stable pits [50].…”

Section: Effect Of Inorganic Inhibitorsmentioning

confidence: 99%

Role of alloyed silicon and some inorganic inhibitors in the inhibition of meta-stable and stable pitting of Al in perchlorate solutions

et al. 2008

View full text Add to dashboard Cite

The study of both meta-stable and stable pitting events on the surface of pure Al and three Al-Si alloys, namely (Al + 6%Si), (Al + 12%Si) and (Al + 18%Si) alloys, was carried out in deaerated neutral NaClO 4 solutions of various concentrations (10 -4 -10 -2 M). Measurements were carried out under the effect of various experimental conditions using potentiodynamic anodic polarization and potentiostatic techniques. The results presented below showed that meta-stable pits (appeared as oscillations in current) form at potentials close to the pitting potential (E pit ) and during the induction time for stable pit formation. Various factors affecting the rate of meta-stable and stable pits were studied. The presence of Si as an alloying element in Al reduces the rate of formation of meta-stable pits, corresponding to a reduction in the probability of developing stable pits, and an increase in the pitting potential results. The inhibitive effects of chromate, silicate, molybdate and tungstate on pitting corrosion in Al were also studied. Results obtained showed that these known inhibitors retard both meta-stable and stable pitting events. This makes attainment of stable pit growth more difficult in presence of these inhibitors.

show abstract

“…50,51 Furthermore, majority of the metastable pitting activities was observed in the beginning of the experiments and decreased with time, which can be attributed to the decrease of the number of susceptible sites available for metastable pitting. 36,52 ) unless CC License in place (see abstract). The samples after metastable pitting tests were examined using SEM/EDS.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Pitting Corrosion Resistance of 304 SS in 3.5 wt% NaCl by Ultrasonic Nanocrystal Surface Modification

Ren

Dong

et al. 2017

J. Electrochem. Soc.

View full text Add to dashboard Cite

Surface nanocrystallization has been shown to increase corrosion resistance of metallic materials. Ultrasonic nanocrystal surface modification (UNSM) is a recently developed method, which utilizes low amplitude ultrasonic frequency vibrations superimposed on a static load to induce high strain rate plastic deformation on a material surface for grain refinement. The present work investigates the effective depth of the severe plastic deformation layer by UNSM treatment, identifies the microstructure change and phase transformation within this layer, and correlates them with the enhanced pitting corrosion resistance of 304 SS in 3.5 wt% NaCl solution.

show abstract

The inhibition of pitting corrosion of stainless steels by chromate and molybdate ions

Cited by 199 publications

References 23 publications

Corrosion of high entropy alloys

Corrosion of high entropy alloys

Role of alloyed silicon and some inorganic inhibitors in the inhibition of meta-stable and stable pitting of Al in perchlorate solutions

Enhanced Pitting Corrosion Resistance of 304 SS in 3.5 wt% NaCl by Ultrasonic Nanocrystal Surface Modification

Contact Info

Product

Resources

About