Specification of surface parameters effects on corrosion behavior of the AISI 316Ti in dependence on experimental methods

Liptáková, Tatiana; Bolzoni, F.; Trško, Libor

doi:10.1080/01694243.2016.1182824

Cited by 6 publications

(5 citation statements)

References 20 publications

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“…Dealing with the numerous architectural and domestic applications of SSs, their surface finishing becomes a factor of primary importance from an aesthetic and a commercial point of view. At the same time, it is necessary to consider that surface finishing significantly influences the localized corrosion resistance of these metallic materials in chloride environments, as reported by the present authors [5,6] and by many other authors [7][8][9][10][11][12][13][14][15][16][17][18][19][20]. In particular, there is a certain agreement among them on the relationship between pitting potential and surface roughness, expressed in terms of Ra and Rz parameters, when the surface of the samples is treated by different technological processes or when 2 of 12 samples are submitted to a grinding operation producing the same surface finishing but different roughness [5,6,[13][14][15][16].…”

Section: Introductionmentioning

confidence: 59%

Study of Localized Corrosion of AISI 430 and AISI 304 Batches Having Different Roughness

Bellezze

Viceré

Giuliani

et al. 2018

Metals

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In this work, the localized corrosion resistance of different batches of AISI 430 and AISI 304 stainless steels, having Scotch-Brite surface finishing, was investigated as a function of their roughness (in terms of Rz) and chemical composition. The study was performed by recording anodic cyclic potentiodynamic polarization curves at room temperature in two NaCl solutions (0.35 and 1.75 wt %). From the anodic curves, corrosion potential (E corr), protection potential (E prot), and pitting potential (E pit) were obtained. In general, the results indicate that AISI 304 has better localized corrosion resistance than AISI 430, both in terms of pitting initiation and repassivation ability, independently from roughness. In particular, an increase of roughness determined a decrease of E pit only in the case of AISI 304 in the less concentrated NaCl solution. This result was related to the higher variability of the corresponding Rz values compared to those of AISI 430. Finally, from the analysis of the loop hysteresis of the anodic curves, in relation to E pit −E prot values, durability information on the tested stainless steels were obtained: AISI 304 shows higher corrosion performances with respect to AISI 430, thanks to the higher chromium content of the former compared to the latter.

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Section: Introductionmentioning

confidence: 59%

Study of Localized Corrosion of AISI 430 and AISI 304 Batches Having Different Roughness

Bellezze

Viceré

Giuliani

et al. 2018

Metals

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show abstract

“…It could be related to the higher aggressiveness of 5 wt % FeCl 3 solution (redox potential 0.691 V) used as 1 M Cl − solution for exposure test compared to 0.9 M NaCl + 0.1 M HCl (redox potential 0.509 V) used for PP. Differences in corrosion process during electrochemical and exposure immersion tests could also have contributed to the observed phenomenon [ 40 , 41 ]. In potentiodynamic polarization, the corrosion process is influenced by a controlled change of potential in the anodic direction from minimum to maximum with a selected sweep rate (mV/s).…”

Section: Resultsmentioning

confidence: 99%

Corrosion Behavior of Sensitized AISI 304 Stainless Steel in Acid Chloride Solution

et al. 2022

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Corrosion resistance of sensitized austenitic stainless steel (SS) in chloride environments is currently the subject of numerous studies. Most of them are focused on neutral chloride solutions at room temperature and the experiments are carried out on ground stainless steels surfaces. This paper deals with the corrosion behavior of sensitized AISI 304 stainless steel in acid 1 M chloride solution (pH = 1.1) at the temperatures of 20 ± 3 °C and 50 °C. The specimens after sensitization are tested as covered by high-temperature surface oxides (“heat tinted”), and also after their chemical removal to assess the impact of the surface state on corrosion resistance. Potentiodynamic polarization (PP) and exposure immersion test are used as the independent corrosion tests. Microstructure before/after exposure immersion test is evaluated by optical microscopy (OM) and SEM. The results obtained showed that sensitization significantly conditions corrosion regardless of the removal of high-temperature oxides, and the elevated temperature mainly acts as its accelerating factor.

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“…This proves that pickling affects the protective effectivity of the passive layer. In comparison with the ground surface according to [23,24], the measured electrochemical characteristics were worse. According to the potentiodynamic cyclic test results a positive effect of pickling is visible on the tested surfaces.…”

Section: Exposure Testmentioning

confidence: 99%

Corrosion Resistance of AISI 316Ti Stainless Steel Subjected to Shot Peening with and without Pickling in Various Chloride Environments

et al. 2017

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SummarySurface conditions of materials affect the chemical, physical and mechanical properties of stainless steels. The main interest of this paper is to focus on corrosion properties of the AISI 316Ti stainless steel treated by shot peening and shot peening and pickling. In the last years shot peening has been widely used as a method improving fatigue properties of components under cyclical load. Because surface finishing has strong effect on corrosion susceptibility of stainless steels, e. g. pitting and created pits can initialize cracks, it is important to analyse corrosion behaviour of the material in question. In this study, the tested surfaces were characterized by SEM, EDX analyses, measurement of surface free energy and roughness. Corrosion properties were investigated in various environments by exposure, potentiodynamic cyclic and EIS tests.

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Specification of surface parameters effects on corrosion behavior of the AISI 316Ti in dependence on experimental methods

Cited by 6 publications

References 20 publications

Study of Localized Corrosion of AISI 430 and AISI 304 Batches Having Different Roughness

Study of Localized Corrosion of AISI 430 and AISI 304 Batches Having Different Roughness

Corrosion Behavior of Sensitized AISI 304 Stainless Steel in Acid Chloride Solution

Corrosion Resistance of AISI 316Ti Stainless Steel Subjected to Shot Peening with and without Pickling in Various Chloride Environments

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