Chloride corrosion behavior on heating pipeline made by AISI 304 and 316 in reclaimed water

Chen, Xi; Liu, Hongyan; Sun, Xiang; Zan, Botao; Liang, Meisheng

doi:10.1039/d1ra06695a

Cited by 12 publications

(5 citation statements)

References 48 publications

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“…The protective passive film on the SS surface ensures high resistance to the uniform corrosion in common oxidation environments, but under special conditions local corrosion forms can be initiated [ 1 , 2 ]. The presence of aggressive substances can evoke local breakdown of passivity and dangerous pitting corrosion [ 3 , 4 , 5 , 6 , 7 ]. An exposure of austenitic SS in the temperature range of 500–800 °C (“critical temperatures”) with consequent slow cooling in the air, e.g., during welding, is related to their susceptibility to another form of local corrosion—intergranular.…”

Section: Introductionmentioning

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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Section: Introductionmentioning

confidence: 99%

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

et al. 2022

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“…The most attacked seems to be 304 SA surface (figure 4f). A difference between the appearance of 316L SA (figure 4c) and 304 SA specimen could be related to the protective effect of molybdenum contained in 316L stainless steel [3,5]. Local corrosion damage of solution-annealed specimens can be observed in more detail in edges of cross sections taken from the middle parts of specimens (figure 7 and figure 8).…”

Section: Resultsmentioning

confidence: 97%

“…In addition to common domestic, industrial, transport and architectural applications, austenitic stainless steels are also acceptable construction material across the chemical-processing and petrochemical industries. It is due their ability to withstand attack from highly corrosive substances when they are in the passive state, as well as their effective mechanical characteristics -good creep resistance, high strength, ductility and malleability, weldability and toughness [1][2][3]. However, it is necessary to take into account, that stainless steels have some important limits in their corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

“…However, it is necessary to take into account, that stainless steels have some important limits in their corrosion resistance. In addition to the susceptibility to the local pitting corrosion in chloride containing media they may also suffer from the intergranular corrosion [1][2][3][4][5][6]. This corrosion form usually takes place in aggressive environments after sensitization by thermal exposure in critical temperatures with consequent slow cooling in the air.…”

Section: Introductionmentioning

confidence: 99%

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The effect of long-term exposure in mixed sulfuric acid and copper sulfate solution on corrosion behavior of austenitic stainless steels

Zatkalíková,

Markovičová

2024

J. Phys.: Conf. Ser.

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Corrosion resistance of austenitic stainless steels in sulfuric acid solutions depends mainly on concentration and temperature of the sulfuric acid, the presence of contaminants and velocity flow. Current studies aim mostly at evaluation of electrochemical parameters in sulfuric acid solutions. Research focused on long-term exposure is lacking. This article deals with the corrosion behavior of AISI 304 and AISI 316L stainless steels in mixed 10 wt. % sulfuric acid and 10 wt. % copper sulfate solution. Sensitized (650 °C/40 hours) and solution annealed (1050 °C/15 min) specimens together with the untreated (as received) ones are evaluated by long-term (22-month) exposure immersion test at the temperature of 22 ± 3 °C on the bases of optical microscopy, SEM and mass losses. Both tested stainless steels in as received and solution annealed state proved high corrosion resistance in the given corrosive environment. The cross-sections edges of sensitized specimens revealed a close relationship between local corrosion sites and weakened grain boundaries, which indicates incipient intergranular corrosion.

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“…In Figure 7A, semicircle for SS304 at low-frequency range does not show any straight line indicating incomplete diffusion of the chloride. 39 Obtained values of equivalent circuit parameters from the fitting are shown in Table 3.…”

Section: Electrochemical Characterizationmentioning

confidence: 99%

Polymer‐derived SiOC ceramic coating for corrosion protection

Bura,

Kumar,

Prasad

2023

Int J Applied Ceramic Tech

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In the present study, a polymer‐derived silicon oxycarbide (SiOC) ceramic layer has been coated on stainless steel 304 (SS304) to improve corrosion resistance in a seawater environment. The surface of SS304 is dip‐coated with vinyl‐functionalized polysiloxane, followed by pyrolysis under argon at 800°C to obtain SiOC layer with a thickness of about 1 μm after two‐fold coating/pyrolysis steps. Structural characterization of the samples was performed by fourier transform infrared (FTIR), X‐ray diffraction, Raman spectroscopy, and scanning electron microscopy. Electrochemical characterization of SS304 and SiOC‐coated SS304 is performed in 0.6 M NaCl solution. Potentiodynamic polarization measurements showed improved corrosion resistance of SiOC‐coated SS304 with a very low corrosion current density of 4.14 × 10−9 A/cm2 whereas for uncoated SS304 corrosion current density of 4.56 × 10−7 A/cm2 was measured. Electrochemical impedance spectroscopic study confirmed superior corrosion resistance behavior of SiOC‐coated SS304 over uncoated SS304.

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Chloride corrosion behavior on heating pipeline made by AISI 304 and 316 in reclaimed water

Abstract: It would be economical if heating pipes were used to transport reclaimed water during its idle period. The most important thing is to study the causes and processes of the corrosion on it for practical application.

Cited by 12 publications

References 48 publications

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

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

The effect of long-term exposure in mixed sulfuric acid and copper sulfate solution on corrosion behavior of austenitic stainless steels

Polymer‐derived SiOC ceramic coating for corrosion protection

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