Electrochemical behavior and corrosion resistance of stainless steel 12Cr18Ni10Ti after thermal and neutron exposure

Yarovchuk, A. V.; Maksimkin, O. P.; Turubarova, L.G.

doi:10.30791/0015-3214-2020-2-5-15

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“…The corrosive properties of stainless steel type 12X18H10T have been studied in several works [3][4][5]. A.V.…”

Section: Introductionmentioning

confidence: 99%

“…Research results revealed that the corrosion resistance of steel in the chloride-containing medium depends on the intensity of redox processes on the surface of the metal, on the state of the structure at micro-and nano-levels [3]. The corrosion resistance of 12X18H10T stainless steel and new high-strength 05X22AG15H8M2F austenitic steel has been studied comparatively.…”

Section: Introductionmentioning

confidence: 99%

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Dissolution of Stainless Steel in Sodium Chloride Solution at Polarization by Non-Stationary Current

Nurdillayeva¹,

Sauirbay²,

Bayeshov³

2021

News of NAN RK. SCTS

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Stainless steel is in great demand due to its mechanical strength, heat resistance, and resistance to corrosive environments. This article presents the result of a study of the electrochemical dissolution behavior of a stainless steel electrode (12X18H10T) at polarization by 50 Hz alternating current in a neutral medium (NaCl). Preliminary experiments have shown that the main processes do not take place when two stainless steel electrodes are polarized with an alternating current. It was observed that by the polarization of the “stainless steel – titanium” pair electrodes with alternating current, the alloy is intensively dissolved with the formation of iron (II) and chromium (III) ions. This is due to the "valve" properties of the oxide layer formed on the surface of the titanium electrode. A change in the value of the current density of the titanium and steel electrodes significantly affects the process of electrochemical dissolution of the alloy. At high current densities, the dissolution rate of the alloy decreases due to the deterioration of the current correcting properties of titanium. With an increase in the electrolyte concentration, the current efficiency is reduced as salt passivation occurs. A maximum value of the current efficiency of dissolution of stainless steel was observed at a current frequency of 50 Hz. High frequencies of the alternating current do not provide an adjustable duration of the anodic half-cycle for the oxidation reaction due to the frequent change of halfcycles of the alternating current. It was observed that increasing the temperature of the electrolyte reduces the current efficiency of the electrochemical dissolution of stainless steel electrodes. The effects of main electrochemical parameters on the electrolysis process have been investigated, and the optimal conditions of the alloy dissolution were established (іТі = 60 kA/m2 , іSS = 800 A/m2 , [NaCl] = 2.0 M, t = 30, ν = 50 Hz.).

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“…The corrosive properties of stainless steel type 12X18H10T have been studied in several works [3][4][5]. A.V.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dissolution of Stainless Steel in Sodium Chloride Solution at Polarization by Non-Stationary Current

Nurdillayeva¹,

Sauirbay²,

Bayeshov³

2021

News of NAN RK. SCTS

View full text Add to dashboard Cite

show abstract

Electrochemical behavior and corrosion resistance of stainless steel 12Cr18Ni10Ti after thermal and neutron exposure

Cited by 1 publication

References 0 publications

Dissolution of Stainless Steel in Sodium Chloride Solution at Polarization by Non-Stationary Current

Dissolution of Stainless Steel in Sodium Chloride Solution at Polarization by Non-Stationary Current

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