Effect of Preliminary Etching of Alloy Ml5 Before Plasma Electrolytic Oxidation

Kozlov, I. A.; Vinogradov, S. S.; Uridiya, Z.P.; Duyunova, V. A.; Manchenko, V.A.

doi:10.18577/2307-6046-2018-0-9-32-42

Cited by 3 publications

(5 citation statements)

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“…Such a structure should negatively affect the protective properties of the coating. The opposite pattern was observed using a polarizing current pulse to the sequence "negative-positive": the dimensions of the surface and base layers are the same and the boundary between them is visible [128][129][130][131][132][133]. With this formation of pulses, the volumetric porosity is 11%, and with the sequence "positive-negative" 15%, this is very important since it is the layer with the absence of pores that determines the corrosion protective properties [127].…”

Section: Plasma Electrolytic Oxidationmentioning

confidence: 99%

“…In the case of applying protective coatings by anodizing, preliminary surface preparation plays an important role [133]. Thus, the surface formed after LSP treatment can serve as a good basis for applying coatings by anodizing [125].…”

Section: Protective Coating Using Powder or Filler Materialsmentioning

confidence: 99%

Section: Surface Preparation Before Anti-corrosion Treatmentmentioning

confidence: 99%

“…The work [133] presents the results of surface preparation of the Mg-Al-Zn-Mn alloy system before applying a PEO coating. Figure 24 The work [133] presents the results of surface preparation of the Mg-Al-Zn-Mn alloy system before applying a PEO coating. Figure 24 shows the structure of the PEO coating formed in the areas with the Mg17Al12 (Figure 24a,b) and AlxMny (Figure 24c) phases.…”

Section: Surface Preparation Before Anti-corrosion Treatmentmentioning

confidence: 99%

“…Cross-section of ML5 alloy with PEO coating: (a) section of a PEO coating formed on the Mg17Al12 phase, which was initially on the surface of the alloy; (b) section of PEO-coating formed at the site of the Mg17Al12 phase, deep in the magnesium alloy; (c) area of the PEO coating with a minimum number of through defects formed on the Al8Mn2 phase initially located on the alloy surface. Adapted from [133].…”

Section: Surface Preparation Before Anti-corrosion Treatmentmentioning

confidence: 99%

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Promising Methods for Corrosion Protection of Magnesium Alloys in the Case of Mg-Al, Mg-Mn-Ce and Mg-Zn-Zr: A Recent Progress Review

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High specific strength characteristics make magnesium alloys widely demanded in many industrial applications such as aviation, astronautics, military, automotive, bio-medicine, energy, etc. However, the high chemical reactivity of magnesium alloys significantly limits their applicability in aggressive environments. Therefore, the development of effective technology for corrosion protection is an urgent task to ensure the use of magnesium-containing structures in various fields of application. The present paper is aimed to provide a short review of recent achievements in corrosion protection of magnesium alloys, both surface treatments and coatings, with particular focus on Mg-Al-Mn-Ce, Mg-Al-Zn-Mn and Mg-Zn-Zr alloys, because of their wide application in the transport industry. Recent progress was made during the last decade in the development of protective coatings (metals, ceramics, organic/polymer, both single layers and multilayer systems) fabricated by different deposition techniques such as anodization, physical vapour deposition, laser processes and plasma electrolytic oxidation.

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