Study of Anodic Film’s Surface and Hardness on A356 Aluminum Alloys, Using Scanning Electron Microscope and In-Situ Nanoindentation

Musza, Alexandra; Ugi, Dávid; Vida, Ádám; Chinh, Nguyen Q.

doi:10.3390/coatings12101528

Cited by 4 publications

(5 citation statements)

References 32 publications

(39 reference statements)

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“…In the unmodified alloys, the eutectic Si particles showed a polygonal flake shape and formed a continuous branched network [32]. This is also confirmed by our own measurement, that after anodization, an amorphous aluminum oxide layer is formed, with Si precipitates in it [33].…”

Section: Introductionsupporting

confidence: 82%

“…The hardness value of the substrate was 79 ± 1 HV. Based on previous tests [33], we found that the oxide layer formed on the surface is γ-Al 2 O 3 , in which there are silicon precipitates.…”

Section: Microstructure Of the Anodized Layersmentioning

confidence: 75%

“…Our previous work [33] showed that the layer thickness does not increase linearly with the oxidation time but reaches a limit, characteristic of the process, so it can be concluded that layer thickness is determined by the quality, concentration, temperature, and current conditions of the electrolyte solution. If the sample reaches the limit value, it does not thicken any further, but a chemical redissolution begins, and in addition to this, the base metal also undergoes deformation.…”

Section: Microstructure Of the Anodized Layersmentioning

confidence: 98%

“…In our previous work, we studied the effect of anodizing conditions on the layer thickness, structure, and hardness of A356 alloy. Then, when planning the research conditions for this research, pointing to tribological properties, we tried to choose the most interesting parameters [33].…”

Section: Sample Preparationmentioning

confidence: 99%

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Tribological Examination of Anodized Al-356 for Automotive Use

Musza,

Windisch,

Török

et al. 2023

Coatings

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The A356 alloy is commonly used in the foundry industry to produce high-stressed automotive components, such as motor frames and cylinder heads. The aim of this work was to investigate how the mechanical and tribological properties of this alloy can be improved by applying an anodizing process. The properties of the oxide layer formed by anodizing using oxalic acid at low temperatures were characterized by different analytical and tribological methods. The combination of tribological methods with standard measurement techniques—such as hardness measurement, layer thickness measurement, as well as the analysis of the morphological characteristics—was used to track the layer evolution during wear developments.

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Section: Introductionsupporting

confidence: 82%

Section: Microstructure Of the Anodized Layersmentioning

confidence: 75%

Section: Microstructure Of the Anodized Layersmentioning

confidence: 98%

Section: Sample Preparationmentioning

confidence: 99%

See 2 more Smart Citations

Tribological Examination of Anodized Al-356 for Automotive Use

Musza,

Windisch,

Török

et al. 2023

Coatings

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“…Furthermore, the BAA treatment of aluminum alloys has been shown to increase their mechanical properties when compared to standard anodizing sulfuric acid [18]. Because of the improved stickiness and hardness of the BAA layer, aluminum alloys can perform better and endure longer in a range of applications, including aerospace components.…”

mentioning

confidence: 99%

Research on the Influence of Coating Technologies on Adhesion Anti-Corrosion Layers in the Case of Al7175 Aluminum Alloy

2023

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A key element in ensuring the service life and strength of aluminum alloys in many industrial applications is the adhesion of anti-corrosion coatings. The aim of this study is to analyze how coating processes affect the adhesion of anti-corrosion coatings on aluminum alloy 7175. In other words, the influence of the nature of the elementary layers that form the anti-corrosion coating was studied for the following: the anodic layer, the primer, and the topcoat. To learn more about the different coating technologies and how they affect adhesion, a thorough literature review was carried out. In addition, a case study using electrocoating and thermal spraying was conducted to show the impact of coating processes on adhesion. The results showed that electrodeposition, as opposed to thermal spraying, improved the adhesion of anti-corrosion coatings. In the case of the aluminum alloy analyzed, there is a significant difference in terms of the adhesion strength of the anti-corrosion coatings. This resistance is influenced by both the anodic coating (BSA TSA SAA) and the type of primer and topcoat used (water-based or solvent-based). The correct choice of anode coat and primer and topcoat can lead to an increase (or decrease) in the adhesion strength of the paint coat by 20%. In conclusion, this study highlights how crucial it is to select the best coating process to maximize the adhesion and durability of aluminum alloys under corrosion conditions.

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The effect of tempering time and cooling environment on the corrosion behavior of AA5083‐H111 alloy

Karagöz,

Buğdaycı,

Öncel

2024

Materialwissenschaft Werkst

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The tempering process can increase the mechanical properties of the material, such as hardness and impact strength, as well as enhance the corrosion resistance. Therefore, the selection of appropriate tempering time and cooling environment is crucial. This study aims to investigate changes in properties such as hardness, tensile strength, corrosion resistance, and microstructure of AA5083‐H111 alloy after a brief tempering process (30 minutes, 45 minutes and 60 minutes) at 320 °C, followed by cooling in air and water environments. The study found that tempering time and cooling environment significantly affect the mechanical properties and corrosion rate. The results show that samples labeled as S30 and S60 have the highest hardness and impact strength, but the best corrosion resistance is achieved in the S60 sample. This study demonstrates that even after a limited‐term tempering process, the mechanical properties and corrosion resistance of AA5083‐H111 alloy can be improved. This information is crucial data for use in the production and application of alloys. The findings of this study could have important implications for the production and application of AA5083‐H111 alloy in industries such as aerospace, automotive, and marine engineering.

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Study of Anodic Film’s Surface and Hardness on A356 Aluminum Alloys, Using Scanning Electron Microscope and In-Situ Nanoindentation

Cited by 4 publications

References 32 publications

Tribological Examination of Anodized Al-356 for Automotive Use

Tribological Examination of Anodized Al-356 for Automotive Use

Research on the Influence of Coating Technologies on Adhesion Anti-Corrosion Layers in the Case of Al7175 Aluminum Alloy

The effect of tempering time and cooling environment on the corrosion behavior of AA5083‐H111 alloy

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