Microstructure–mechanical and chemical behavior relationships in passive thin films

Yassar, Reza S.; Scudiero, Louis; Alamr, A.; Bahr, David F.; Norton, M. Grant

doi:10.1016/j.tsf.2009.08.032

Cited by 22 publications

(3 citation statements)

References 33 publications

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“…The mechanical properties of passive films formed on stainless steels shows great difference, which correlates with the composition, thickness and structure [15][16][17] of passive films. The thickness, the composition and the corrosion properties of the passive film could be also altered by different affecting factors, such as chloride ion concentration in the solution [18,19,20], solution temperature [20,21,22] and pH [16,23], anodic polarization time [24] and also the alloying elements and crystalline structure of the substrate on which it is formed [24][25]26].…”

Section: Introductionmentioning

confidence: 99%

Effect of passive film on mechanical properties of martensitic stainless steel 15-5PH in a neutral NaCl solution

Guo

Liu

et al. 2015

Applied Surface Science

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Section: Introductionmentioning

confidence: 99%

Effect of passive film on mechanical properties of martensitic stainless steel 15-5PH in a neutral NaCl solution

Guo

Liu

et al. 2015

Applied Surface Science

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“…Moreover, with the gradually increase of the solution temperature, the sender concentration N D in the film layer increased from 5.273 × 10 20 cm −3 to 1.772 × 10 22 cm −3 , the host concentration N A increased from 4.972 × 10 21 to 4.592 × 10 23 cm −3 , the flat-band potential increased from 0.021 to 0.753 V, the number of carriers in the solution increased, the interionic reaction process in the solution intensifies, and the stability of the film layer decreased. The smaller the absolute value of the slope of the fitted straight line with increasing solution temperature, the greater the carrier density in the solution, the higher the diffusion rate between ions, the more ionic vacancies on the surface of the film layer, and thus the lower the stability and corrosion resistance of the metal substrate 46 , 47 .…”

Section: Resultsmentioning

confidence: 99%

Electrochemical behavior of 2205 duplex stainless steel in simulated solution containing high concentration Cl− and saturated CO2 at different temperatures

Zhu

Xian

et al. 2022

Sci Rep

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Abstract2205 duplex stainless steel (DSS) has good corrosion resistance due to its typical duplex organization, but the increasingly harsh CO2-containing oil and gas environment leads to different degrees of corrosion, especially pitting corrosion, which seriously threatens the safety and reliability of oil and gas development. In this paper, the effect of temperature on the corrosion behavior of 2205 DSS in a simulated solution containing 100 g/L Cl− and saturated CO2 was investigated with immersion tests and electrochemical tests and combined with characterization techniques such as laser confocal microscopy and X-ray photoelectron spectroscopy. The results show that the average critical pitting temperature of 2205 DSS was 66.9 °C. When the temperature was higher than 66.9 °C, the pitting breakdown potential, passivation interval, and self-corrosion potential decreased, while the dimensional passivation current density increased, and the pitting sensitivity was enhanced. With a further increase in temperature, the capacitive arc radius of 2205 DSS decreased, the film resistance and charge transfer resistance gradually decreased, the carrier density of the donor and acceptor in the product film layer with n + p bipolar characteristics also increased and the inner layer of the film with Cr oxide content decreased, while the outer layer with Fe oxide content increased, the dissolution of the film layer increased, the stability decreased, and the number and pore size of pits increased.

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“…Mechanical status at cracking tip of nickel-based alloys and stainless steel SCC for nuclear pressure vessels and steam generators is one of the key factors in the analysis of SCC mechanism and quantitative prediction of crack growth rate [1,2] . In the process of SCC, a layer of oxide film can be formed on the crack tip surface of the nickel base alloy [3] .…”

mentioning

confidence: 99%

Effect of Film-Induced Stress on Mechanical Properties at Stress Corrosion Cracking Tip

Yang

Xue

Yang

et al. 2017

Rare Metal Materials and Engineering

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Oxide film rupture theory has become one of the most popular models to quantitatively predict the stress corrosion cracking (SCC) rate at crack tip of nickel-based alloys in high temperature and high pressure environments, and stress intensity factor has become an important parameter to measure the stress corrosion cracking rate. In order to further understand the fracture mechanism of the oxide film and the driving force of crack growth, film-induced stress intensity factor was proposed. To understand the effect of film-induced stress intensity factor on the micro-mechanical state at the tip of EAC (environmentally assisted cracking), the stress-strain in the base metal at the EAC tip was simulated and discussed using a commercial finite element analysis code. And then the effect of film-induced stress intensity factor on Mises stress, equivalent plastic strain, tensile stress, tensile strain and tensile plastic strain gradient of crack tip was obtained, which provides a parameter to improve the quantitative predication accuracy of EAC growth rate of nickel-based alloys and austenitic stainless steels in the important structures of nuclear power plants. Therefore the oxide film rupture theory was improved.

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Microstructure–mechanical and chemical behavior relationships in passive thin films

Cited by 22 publications

References 33 publications

Effect of passive film on mechanical properties of martensitic stainless steel 15-5PH in a neutral NaCl solution

Effect of passive film on mechanical properties of martensitic stainless steel 15-5PH in a neutral NaCl solution

Electrochemical behavior of 2205 duplex stainless steel in simulated solution containing high concentration Cl− and saturated CO2 at different temperatures

Effect of Film-Induced Stress on Mechanical Properties at Stress Corrosion Cracking Tip

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