Electropolishing effects on corrosion behavior of 304 stainless steel in high temperature, hydrogenated water

Ziemniak, S.E.; Hanson, M.; Sander, P.

doi:10.1016/j.corsci.2008.06.032

Cited by 112 publications

(52 citation statements)

References 16 publications

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“…Ziemniak et al 12 observed a native oxide layer of 1-2nm on an electropolished surface and a machined sample. The layer observed in the present study is slightly thicker which could be due to a thicker oxide being developed during the bright annealing process.…”

Section: Resultsmentioning

confidence: 99%

“…The nodules are less than 500nm in size and have a random globular shape with no obvious crystallographic features. Nodules have previously been reported to form on 304 stainless steel during high temperature oxidation 12,13 . These nodules were however formed at higher temperatures and for considerably longer oxidation times and as such are generally larger and exhibit crystallographic structure such as octahedral shapes, platelets or whiskers 13,14 .…”

Section: Resultsmentioning

confidence: 99%

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Effect of thermally grown oxides on colour development of stainless steel

Higginson

Jackson

Murrell

et al. 2015

Materials at High Temperatures

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Stainless steels are used in an array of applications where their ability to take on colour is of aesthetic value. Although thermal colouring (heat tinting) is known, particularly in terms of its effect on welds, the surface development of thermally coloured stainless steel has not been considered in detail. This paper demonstrates the colour development of a bright annealed 304 stainless steel with time at temperature. The colour development has been quantified using colour spectrophotoscopy and the colour related to the growth of surface oxide features by Scanning Electron Microscopy and the chemical profiles by X-ray Photoelectron Spectroscopy (XPS). There is a clear development of both the oxide thickness and chemistry, with increasing time with small nodules being the main features seen across the surface of the samples with time. The oxides have been shown to comprise of an outer iron rich oxide and an inner chromium/iron spinel layer.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Effect of thermally grown oxides on colour development of stainless steel

Higginson

Jackson

Murrell

et al. 2015

Materials at High Temperatures

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show abstract

“…This amount of the removed material corresponds with the layer (0.02 mm) removed from the specimen after the electrolytic polishing carried out in [15]. The smoothness of the electropolished surface was observed macroscopically; in addition, the surface roughness of the polished and as-received surfaces was measured.…”

Section: Experiments Resultsmentioning

confidence: 99%

“…Appropriate polishing current density is a very important parameter for effectual surface finish. The application of a high current density leads to a more intensive bubble formation, which can cause microscopic pits on the surface of the specimen [15]. The rise in the current density at the trans-passivation potential E t (about 1.2 V) points to the beginning of Cr 2 O 3 dissolution and the formation of soluble chromates (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…2) shows that electropolished surfaces without mechanical defects (curves 2 and 4) have the highest resistance to pitting corrosion. Electrochemical polishing enabled the formation of a high quality Cr 2 O 3 passive film, which protects the steel surface in the whole passive region [11,15,16]. Appropriate polishing current density is a very important parameter for effectual surface finish.…”

Section: Discussionmentioning

confidence: 99%

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The Effect of Surface Treatment on Corrosion Resistance of Austenitic Biomaterial

Zatkalíková

Oravcová

Palček

et al. 2018

TFAMENA

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SummaryThis paper focuses on the effect of surface treatment (grinding, electrochemical polishing) on the corrosion resistance of AISI 316L, a Cr-Ni-Mo low-carbon austenitic surgical stainless steel, in a physiological solution at the temperature of 37 °C. The influence of a surface defect and of sensitization by heat treatment on the corrosion behaviour of electrochemically polished surface is also studied. The evaluation is based on the results of cyclic potentiodynamic polarization tests and on the microscopic observation of specimen surfaces after performed tests. The analysis of cyclic potentiodynamic curves showed the highest pitting corrosion resistance of electrochemically polished specimens regardless of the previous sensitization. The as-received specimen showed the highest susceptibility to pitting, which was microscopically confirmed. Based on the performed experiments we can conclude that electrochemical polishing is an efficient chemical surface treatment to increase the resistance of AISI 316L to pitting corrosion; the resistance to pitting corrosion of electrochemically polished surface can by markedly decreased by the presence of mechanical defects; the as-received surface and the ground surface showed lower resistance to pitting corrosion than electrochemically polished ones; sensitization induced by heat treatment (700 °C/10 hours) does not decrease resistance to pitting corrosion.

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Investigation into the Mitigation of Crevice Corrosion of Aluminum–Copper Contacts in Seawater by Regulating the Contact Surface Roughness

Chen,

Yin,

Wang

et al. 2024

Adv Eng Mater

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Crevice corrosion for dissimilar metal contacts is a key problem in engineering applications. This work has attempted to prevent the ingress of corrosive media into the crevice between aluminum alloy and copper by controlling the roughness (machining accuracy) of the contact surfaces. Both electrochemical and alternating dry/wet immersion tests were used to investigate the corrosion resistance of aluminum alloy–copper contacts with different contact surface roughness. Considering the relationship between the contact surface roughness and the liquid–solid contact angle and the crevice width, a finite element model based on fluid dynamics theory is established to analyze the effect of the contact surface roughness on the seawater infiltration depth in the contact crevice. The distribution of corrosion products on the aluminum alloy and copper surfaces is observed by optical microscope and scanning electron microscope. The phase composition of the corrosion products is analyzed by X‐ray diffraction technique. The results show that the corrosion resistance of the contact improves as the roughness of the contact surface decreases. This is attributed to the fact that the infiltration of seawater is retarded due to the decrease in the crevice width and increase in the contact angle with the decrease in the contact surface roughness.

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Electropolishing effects on corrosion behavior of 304 stainless steel in high temperature, hydrogenated water

Cited by 112 publications

References 16 publications

Effect of thermally grown oxides on colour development of stainless steel

Effect of thermally grown oxides on colour development of stainless steel

The Effect of Surface Treatment on Corrosion Resistance of Austenitic Biomaterial

Investigation into the Mitigation of Crevice Corrosion of Aluminum–Copper Contacts in Seawater by Regulating the Contact Surface Roughness

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