Corrosion inhibition of AISI 304- and AISI 316-type stainless steel coated with nickel oxide in H2SO4 as a function of annealing temperature

Savaloni, Hadi; Kazemi, Zahra

doi:10.1007/s00339-021-04561-2

Cited by 2 publications

(1 citation statement)

References 56 publications

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“…304 stainless steel is widely used in marine, petrochemical and nuclear power fields by virtue of its good plastic toughness, corrosion resistance and processability. However, the surface properties of material, such as low strength and hardness, limit its further development and application [1,2]. Laser surface treatment technology, as an efficient and controllable surface modification technique, can achieve rapid solidification of materials by controlling the cooling rate with different energy inputs to achieve surface modification [3].…”

Section: Introductionmentioning

confidence: 99%

Effects of laser scanning overlap rate on microstructure and properties of laser surface remelting stainless steel

Chen¹,

Li²,

Liu³

et al. 2022

Phys. Scr.

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To study the effect of laser scanning overlap rate (LSOR) on the microstructure and properties of 304 stainless steel remelted layer (RL), nanosecond pulsed laser was used to remelt the surface of 304 stainless steel. The micro-morphology, hardness, roughness, adhesion force and corrosion resistance of RL are studied by changing the LSOR. The experimental results show that a layer of oxides mainly composed of Cr, Fe and Mn is formed on the surface of 304 stainless steel and the phase transition from α-Fe to γ-Fe after laser irradiation. Laser surface remelting (LSR) hardens the substrate surface with a hardness of 185 HV and the maximum hardness after remelting is 248.9HV. With the increase of LSOR, the surface roughness gradually increased, the adhesion force first increased and then decreased and the maximum adhesion is 26.1N. The LSOR at the turning point is 80% and the phase distribution of the RL is more uniform at this time. The maximum self-corrosion potential of the RL is -0.283V, which is positively shifted by 0.268V compared to the substrate self-corrosion potential. LSR is a promising technique to improve the surface microstructure and properties of 304 stainless steel.

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Section: Introductionmentioning

confidence: 99%

Effects of laser scanning overlap rate on microstructure and properties of laser surface remelting stainless steel

Chen¹,

Li²,

Liu³

et al. 2022

Phys. Scr.

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Do Wettability Measurements Define Corrosion Inhibition of Etched Surfaces? A Study on Acid‐Etched 316L Stainless Steel

Jothi Prakash,

Lee

2024

Adv Eng Mater

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Special wetting surfaces have attracted attention owing to their potential applications in the automotive, engineering, environmental, and biomedical industries. Specifically, nature‐inspired superhydrophobic surfaces are more effective in blocking moisture, thus limiting corrosion. Hence, surface wettability analysis remains the primary method for demonstrating the corrosion mitigation characteristics of rough‐engineered surfaces. Herein, the influence of wettability measurements on the corrosion inhibition of 316L stainless steel surfaces etched in HCl: HNO3 acid is systematically investigated. Interestingly, etched hydrophobic surfaces with a contact angle of ≈125° significantly improve the corrosion resistance by 50%, resulting in suppressed corrosion rates. Furthermore, the surface chemical states of the etched 316L steel are analyzed and discussed in detail.

show abstract

Corrosion inhibition of AISI 304- and AISI 316-type stainless steel coated with nickel oxide in H2SO4 as a function of annealing temperature

Cited by 2 publications

References 56 publications

Effects of laser scanning overlap rate on microstructure and properties of laser surface remelting stainless steel

Effects of laser scanning overlap rate on microstructure and properties of laser surface remelting stainless steel

Do Wettability Measurements Define Corrosion Inhibition of Etched Surfaces? A Study on Acid‐Etched 316L Stainless Steel

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