Study on the effect law of virtual impact separator efficiency based on multi-factor orthogonal test

Wang, Yuhuan; Yu, Haiming; Yang, Xianhang; Xie, Sen; Ye, Yuxi; Hou, Chuangen; Gao, Tianyuan

doi:10.1016/j.psep.2022.12.093

Cited by 7 publications

(1 citation statement)

References 40 publications

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“…However, due to the long-term effects of human and mechanical stress and corrosive media, the coating inevitably exhibits phenomena such as peeling, breakage, and foaming [8,9]. At present, electrochemical impedance spectroscopy (EIS) is widely used to analyze the protection of coatings on metals [10][11][12], which evaluates the protective effect of coatings to a certain extent. However, coating failure and matrix metal corrosion often start in local areas, and EIS cannot obtain information related to local corrosion.…”

Section: Introductionmentioning

confidence: 99%

Effect of Coating Damage on the Micro Area Corrosion Performance of HDR Duplex Stainless Steel

Lin,

Li,

Wang

et al. 2024

Coatings

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In order to determine the effect of damaged insulating enamel on the corrosion of high-chromium (H), duplex (D), and corrosion-resistant (R) duplex stainless steel, the corrosion characteristics of HDR duplex stainless steel in 3.5% NaCl solution were studied by means of local electrochemical impedance spectroscopy (LEIS) and micro-morphology analysis. It was shown that the LEIS impedance was stable at about 7.0 × 103 Ω within 10 days when the HDR duplex stainless steel was not coated. The minimum LEIS impedance of exposed HDR at the damaged area fluctuated around 6.5 × 103 Ω within 15 days when the coating of the self-control insulating enamel damaged area was 1 mm × 10 mm. The coating-damaged area from 1 mm × 10 mm reduced to a circular hole with a diameter of φ1 mm, and the LEIS impedance of the exposed HDR increased at the damaged coating. When extending along the damaged coating to the intact coating area, the impedance rapidly increased, and the further the distance from the damage, the greater the increase in impedance. The impedance of coated HDR increased with the prolongation of immersion time and ultimately stabilized. The thicker the coating, the longer the impedance took to reach a stable state. The stabilized coating had a better effect on improving the corrosion resistance of HDR duplex stainless steel. Within 15 days, the HDR ferrite structure at different areas of coating damage prioritized corrosion. Cl− mainly comes from the solution, and Si and S elements mainly come from elements of the collective itself, with Cl− adsorption, S, and Si element inclusion being the main factors influencing the corrosion of the ferrite structure.

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Section: Introductionmentioning

confidence: 99%