Influence of Cu on the microstructure and corrosion resistance of cold-rolled type 204 stainless steels

Liu, Xiaohong; Liu, Lele; Sui, Fengli; Bi, Hongyun; Chang, Edmond Chin‐Ping; Li, Moucheng

doi:10.1007/s10008-020-04614-1

Cited by 10 publications

(4 citation statements)

References 48 publications

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“…Possible reason for improvement of the corrosion resistance is attributed to the formation of a dense and stable passivation film on the surface of 430-Cu SS [ 29 , 30 ]. The passivation film is mainly composed of metal oxide, which reduces the electrochemical reaction rate by blocking the transfer of electrons, and effectively prevents the invasion of corrosion reactants and highly permeable ions [ 31 , 32 ].…”

Section: Resultsmentioning

confidence: 99%

Antibacterial mechanism of Cu-bearing 430 ferritic stainless steel

Zhang

Jin

et al. 2021

Rare Met.

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Graphical abstract Copper (Cu)-bearing stainless steel has testified its effectiveness to reduce the risk of bacterial infections. However, its antibacterial mechanism is still controversial. Therefore, three 430 ferritic stainless steels with different Cu contents are selected to conduct deeper research by the way of bacterial inactivation from two aspects of material and biology. Hereinto, electrochemical and antibacterial results show that the increase in Cu content simultaneously improves the corrosion resistance and antibacterial property of 430 stainless steel. In addition, it is found that Escherichia coli ( E. coli ) on the surface 430 Cu-bearing stainless steel by the dry method of inoculation possesses a rapid inactivation ability. X-ray photoelectron spectroscopy (XPS) aids with ion chelation experiments prove that Cu (I) plays a more crucial role in the contact-killing efficiency than Cu (II), resulting from more production of reactive oxygen species (ROS).

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Section: Resultsmentioning

confidence: 99%

Antibacterial mechanism of Cu-bearing 430 ferritic stainless steel

Zhang

Jin

et al. 2021

Rare Met.

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“…Martensite 1) Martensitic transformation brings high density of dislocation defects to the stainless steels. [34] 2) Alloying Cu reduces the dislocation defects in the rolled SS through suppressing the martensitic transformation.…”

Section: Microstructurementioning

confidence: 99%

“…The microstructure optimization is of prime importance to avoid corrosion nucleation owing to the penetration of an electrolyte through micropathways, such as dislocations, deformation bands, inclusions, and twins. [34][35][36][37][38] Thus, finer control of the microstructure and defects of materials is expected to overcome the microstructure-induced corrosion.…”

Section: Introductionmentioning

confidence: 99%

Effects of Alloying Elements and Microstructure on Stainless Steel Corrosion: A Review

Sun

Tang

Wang

et al. 2021

steel research int.

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Stainless steel has attracted significant attention in industrial and engineering applications. To improve its corrosion resistance, there are two major approaches that are to optimize the elemental composition and tune the microstructure. A comprehensive review of the main findings on the corrosion of stainless steel is presented, and some controversial issues are highlighted. First, the functional roles of alloying elements are discussed, including nonmetallic (B, C, and N) and metallic (Cr, Ni, Cu, and Mo) elements. Additionally, their detrimental and positive effects, as well as the corresponding mechanisms, are highlighted. Second, the microstructure‐induced corrosion of stainless steel is discussed, including the crystallographic‐orientation‐dependent corrosion, the dual influence of grain size and grain boundary distribution, texture, and defects in the matrix. In addition, nanostructured materials are mentioned herein. Third, challenges as well as research trends in the future are proposed with perspectives for the development of novel stainless steel in research and industrial applications.

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“…These current perturbances were generally considered as the proof of protective lm rupture and their re-building at the metallic surface, reecting the nucleation and growth of pitting. 30,31 These transient changes of current density caused the generation of metastable pits at surface, [32][33][34] thereinto, some of pits would repassivate immediately, but the others would continue to grow and ultimately cause damage to the metallic surface. 35 It was supposed that the instability of this lm was concerned with the adsorption of coumarin on the surface.…”

Section: Polarization Curvesmentioning

confidence: 99%