Improvement on corrosion resistance of sintered Nd-Fe-B with bilayer Al/Cr thin films

Shi, Zhen; Zeng, Hang; Zhang, Zejun; Zhang, Xiaowei; Ćurković, Lidija; Mandić, Vilko; Fu, Song; Wang, Wei; Li, Jun; Zhao, Lizhong; Zhang, Xuefeng

doi:10.1016/j.jmmm.2022.170222

Cited by 8 publications

(3 citation statements)

References 37 publications

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“…It is noteworthy that this type of under‐film corrosion behavior is commonly observed in the development of filiform corrosion in Al alloys [ 78,79 ] and corrosion in thin films. [ 80–82 ]…”

Section: Resultsmentioning

confidence: 99%

“…It is noteworthy that this type of under-film corrosion behavior is commonly observed in the development of filiform corrosion in Al alloys [78,79] and corrosion in thin films. [80][81][82] A comparison between the corrosion morphology of the surface, before and after the removal of the corrosion products and the anodic layer, must be carried out to observe the real extent of the attack, as shown in Figure 10.…”

Section: Evaluation Of the Corrosion Attack In The Anodized Al Alloy ...mentioning

confidence: 99%

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An assessment of pitting corrosion in anodized aluminum alloys: It might not be what it seems

de Sousa Araujo,

Milagre,

Zhou

et al. 2024

Materials & Corrosion

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In this study, special attention was given to the characterization of pits on the anodized aluminum alloy (Al–Zn–Mg–Cu) with an anodic aluminum oxide formed in tartaric sulfuric acid. Anodic polarization in 0.1 mol L−1 NaCl solution was used to initiate pitting corrosion in the anodized alloy. Pit characteristics, such as morphology and depth, were evaluated by using optical microscopy and optical profilometry, and scanning electron microscopy. The methodology adopted in this study revealed severe under‐film pitting due to highly occluded conditions and showed that the extent of the under‐film pitting is significantly greater than the size of pit mouth observed from the surface.

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Section: Resultsmentioning

confidence: 99%

Section: Evaluation Of the Corrosion Attack In The Anodized Al Alloy ...mentioning

confidence: 99%

An assessment of pitting corrosion in anodized aluminum alloys: It might not be what it seems

de Sousa Araujo,

Milagre,

Zhou

et al. 2024

Materials & Corrosion

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show abstract

“…To demonstrate the versatility and the rapid assembly process, Nd-Fe-B permanent magnets were chosen due to their susceptibility of harsh conditions and poor corrosion resistance. [53][54][55] After immersion, the Nd-Fe-B surface exhibited hierarchical scale roughness (Figure 5a) and the surface was rendered superhydrophobic with water contact angle of 169.5°, compared with 86.7° on bare Nd-Fe-B surface (Figure 5d). EDS mapping in Figure S14 (Supporting Information) presents that Nd-Fe-B surface was fully covered with FAS-SiO 2 @PDA coatings and a minor amount of Fe was detected from the underlying Nd-Fe-B.…”

Section: Corrosion Protection For Nd-fe-b Permanent Magnetsmentioning

confidence: 99%

Constructing Superhydrophobicity by Self‐Assembly of SiO₂@Polydopamine Core‐Shell Nanospheres with Robust Oil‐Water Separation Efficiency and Anti‐Corrosion Performance

Shi

Zeng

Yuan

et al. 2023

Adv Funct Materials

Self Cite

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Vulnerable robustness of superhydrophobic materials have mightily hindered their practical applications. Herein, a controllable and effective strategy is demonstrated for constructing robust superhydrophobicity with aqueous hydrophobic interaction driving self-assembly (HIDS), using polydopamine (PDA) as the binder and SiO 2 particles as the nano-sized structures to enable low-adhesive property. The proposed strategy realizes the rapid interfacial assembly of PDA by manipulating the wetting properties of SiO 2 @PDA coreshell particles with hydrophobic modifier. The polyurethane (PU) sponges are facilely rendered superhydrophobic with remarkable robustness, stemming from the excellent adherence of HIDS enhanced covalent interaction between PDA and PU. Coated sponge possesses ultralong-term stability during the oil-water separation, the separation efficiency can be maintained at 98.8% even after 1000 cycle separations and strikingly, superhydrophobicity is still retained after 100 cycle abrasion with ultrahigh loading pressure of 49 kPa. Versatilely, the coatings can be assembled on various substrates through scalable dip coating for attaining superhydrophobicity, regardless of size, roughness, chemistry, and rigidity. The complete water-repellent coatings on permanent magnet of Nd-Fe-B hold excellent anti-corrosion properties without deteriorating the magnetic properties, exhibiting a low corrosion current density of 2.03 × 10 −8 A cm −2 , which is three orders of magnitude lower than that of 1.30 × 10 −5 A cm −2 for bare Nd-Fe-B magnet.

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Preparation and Anticorrosion Performance of Double-Layer Epoxy Resin Coatings on Bonded NdFeB Magnets

Yang,

Sun,

Yang

et al. 2023

J. of Materi Eng and Perform

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Improvement on corrosion resistance of sintered Nd-Fe-B with bilayer Al/Cr thin films

Cited by 8 publications

References 37 publications

An assessment of pitting corrosion in anodized aluminum alloys: It might not be what it seems

An assessment of pitting corrosion in anodized aluminum alloys: It might not be what it seems

Constructing Superhydrophobicity by Self‐Assembly of SiO₂@Polydopamine Core‐Shell Nanospheres with Robust Oil‐Water Separation Efficiency and Anti‐Corrosion Performance

Preparation and Anticorrosion Performance of Double-Layer Epoxy Resin Coatings on Bonded NdFeB Magnets

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Improvement on corrosion resistance of sintered Nd-Fe-B with bilayer Al/Cr thin films

Cited by 8 publications

References 37 publications

An assessment of pitting corrosion in anodized aluminum alloys: It might not be what it seems

An assessment of pitting corrosion in anodized aluminum alloys: It might not be what it seems

Constructing Superhydrophobicity by Self‐Assembly of SiO2@Polydopamine Core‐Shell Nanospheres with Robust Oil‐Water Separation Efficiency and Anti‐Corrosion Performance

Preparation and Anticorrosion Performance of Double-Layer Epoxy Resin Coatings on Bonded NdFeB Magnets

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Product

Resources

About

Constructing Superhydrophobicity by Self‐Assembly of SiO₂@Polydopamine Core‐Shell Nanospheres with Robust Oil‐Water Separation Efficiency and Anti‐Corrosion Performance