Multiphase Ceramic Coatings with High Hardness and Wear Resistance on 5052 Aluminum Alloy by a Microarc Oxidation Method

Qin, Decai; Xu, Guiyin; Yang, Yang; Chen, Song

doi:10.1021/acssuschemeng.7b03883

Cited by 30 publications

(9 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When AA7075 alloy is applied in seawater environments, surface coatings are always needed to enhance their corrosion‐resistant performance from severe corrosion. Plasma electrolytic oxidation (PEO), also known as micro‐arc oxidation (MAO), has been extensively developed to improve the mechanical and corrosion‐resistant performances of valve metals 3–9 . During the PEO process, the substrates were subjected to the transient high temperature and the large strong electric field and then covered by a defect‐free ceramic film.…”

Section: Introductionmentioning

confidence: 99%

Enhanced corrosion‐resistant performance of the PEO coatings on AA7075 alloy by a sol–gel‐derived silica layer

Tong

Wan

et al. 2022

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

The paper aimed to increase the corrosion-resistant performance of AA7075 alloy by the incorporation of sol-gel with plasma electrolytic oxidation (PEO) technologies. The AA7075 alloy substrate was first coated by an oxide ceramic layer with the help of the PEO process and then covered by a sol-gel-derived SiO 2 layer. The results from an X-ray diffraction and scanning electron microscope clearly show that a layer of sol-gel-derived SiO 2 uniformly covered and sealed the surface microporous structure of PEO coatings on AA7075 alloy, effectively enhancing the corrosion-resistant performance of PEO-coated AA7075 alloy in an aqueous solution containing 3.5-wt.% NaCl. The lower current density of 2.09 × 10 −7 A/cm 2 and the larger polarization resistance of 5.35 × 10 4 Ω cm 2 were found for sol-gel/PEO-coated AA7075 alloy as compared with 3.68 × 10 −6 A/cm 2 and 9.81 × 10 3 Ω cm 2 for individual PEO-coated AA7075 alloy. Thus, it is an effective strategy to improve the corrosion-resistant performance of the AA7075 alloy by combining the PEO and sol-gel techniques.

show abstract

Section: Introductionmentioning

confidence: 99%

Enhanced corrosion‐resistant performance of the PEO coatings on AA7075 alloy by a sol–gel‐derived silica layer

Tong

Wan

et al. 2022

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

show abstract

“…The underlying principle is to engineer the surface topography to control friction or outgrowths and adhesion to the substrate. As the contact area of the surface depends on the surface features, surface characteristics can be tuned by an appropriate method for enhanced protection and wear properties in various engineering applications [13,14].…”

Section: Introductionmentioning

confidence: 99%

High Entropy Alloy Coatings and Technology

Sharma

2021

Coatings

View full text Add to dashboard Cite

Recently, the materials research community has seen a great increase in the development of multicomponent alloys, known as high entropy alloys (HEAs) with extraordinary properties and applications. In surface protection and engineering, diverse applications of HEAs are also being counted to benefit from their attractive performances in various environments. Thermally sprayed HEA coatings have outperformed conventional coating materials and have accelerated further advancement in this field. Therefore, this review article overviews the initial developments and outcomes in the field of HEA coatings. The authors have also categorized these HEA coatings in metallic, ceramic, and composite HEA coatings and discussed various developments in each of the categories in detail. Various fabrication strategies, properties, and important applications of these HEAs are highlighted. Further, various issues and future possibilities in this area for coatings development are recommended.

show abstract

“…Wang Shaopeng [3] studied the morphology and wear resistance of the composite coatings formed on a TA2 substrate using micro arc oxidation. Qin Decai [4] researched multiphase ceramic coatings with a high hardness and wear resistance using the micro arc oxidation method. Leslaw Kyziol et al [5] investigated the stress corrosion of micro arc oxidation coatings.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Wear Properties of Micro Arc Oxidation Ceramic Coatings

Shang

et al. 2020

Materials

View full text Add to dashboard Cite

The interaction effect of micro arc oxidation (MAO) parameters on the microstructure and wear properties was investigated. The results showed that the electric current and oxidation time significantly influenced the thickness and grinding crack width of the ceramic coatings within the range of the selected parameters, and the interaction effect of the electrical parameters was not obvious. The surface morphology, cross-section morphology, and element distribution of the coatings were observed using scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). The results showed that ceramic coatings with γ-Al2O3 and α-Al2O3 formed, which enhanced the coating performance. After that, the microhardness and wear resistance were tested. Under the optimal process, the microhardness of a coating section was up to 1200 HV0.1, and the friction coefficient was just 0.3. When wear occurred, the volcanic microstructures experienced extrusion and deformation, and then peeled off under shear stress, which led to the formation of a grinding crack. The main failure modes of the micro arc oxidation coatings were abrasive wear and spalling failure.

show abstract

Multiphase Ceramic Coatings with High Hardness and Wear Resistance on 5052 Aluminum Alloy by a Microarc Oxidation Method

Cited by 30 publications

References 36 publications

Enhanced corrosion‐resistant performance of the PEO coatings on AA7075 alloy by a sol–gel‐derived silica layer

Enhanced corrosion‐resistant performance of the PEO coatings on AA7075 alloy by a sol–gel‐derived silica layer

High Entropy Alloy Coatings and Technology

Microstructure and Wear Properties of Micro Arc Oxidation Ceramic Coatings

Contact Info

Product

Resources

About