Effect of aluminum anodizing in phosphoric acid electrolyte on adhesion strength and thermal performance

Lee, SulKi; Kim, Dong-Hyun; Kim, Yonghwan; Jung, Uoo-Chang; Chung, Wonsub

doi:10.1007/s12540-015-5426-2

Cited by 23 publications

(7 citation statements)

References 26 publications

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“…Although aluminum alloys are prone to form an oxide layer in the atmospheric environment, the primary oxide layer is only a non-uniform structure of tens to hundreds of angstroms, resulting in low hardness and poor wear resistance of 6061 aluminum alloy [8][9][10][11]. Currently, micro-arc oxidation, anodizing, plasma electrolytic oxidation, enameling, painting, and electroplating are often used in industry to improve the surface performance and service life of aluminum alloys [12,13]. Anodizing has become the most promising preparation technology of aluminum alloy films because of its low cost, excellent film performance, functionality, and colorability.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Anodizing Temperature on Microstructure and Tribological Properties of 6061 Aluminum Alloy Anodic Oxide Films

et al. 2022

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Anodizing a simple and effective method to improve the wear resistance of 6061 aluminum alloy. In this study, the microstructure of 6061 aluminum alloy oxide films (AAO) was adjusted by changing the electrolyte temperature (5, 15, and 25 °C) using 160 g/L sulfuric acid as the electrolyte. The phase composition, microstructure, and morphological characteristics of the specimens were detected using X-ray diffractometer and field emission scanning electron microscopy (SEM). The hardness, elastic modulus, and tribological properties of the films were examined using hardness testers and a rotary friction tester. The results showed that as the temperature of the electrolyte increases, the surface of the oxide films changes from uniformly distributed small-sized pores to a coral-like loose porous structure, and the thickness of the films increases. The electrolyte temperature has a significant effect on the friction performance of the AAO films. When the solution temperature decreases from 25 to 5 °C, the steady-state friction coefficient decreases from 0.46 to 0.39. According to the morphology of the wear tracks, it can be determined that the main wear mechanism of AAO films gradually changes from delamination wear to abrasive and adhesive wear, and the wear rate drops by ~69%.

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Section: Introductionmentioning

confidence: 99%

Effect of the Anodizing Temperature on Microstructure and Tribological Properties of 6061 Aluminum Alloy Anodic Oxide Films

et al. 2022

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“…The unidirectional carbon fiber prepreg was wound on the aluminum block, as shown in Figure 1, which was anodized with phosphoric acid to improve the surface adhesion. [ 23 ] The number of each specimen ply was 10 with the ply orientations of [0] 10 . The MWCNTs were evenly distributed in the bonding area by spraying a solvent dispersion of nanotubes with an airbrush.…”

Section: Mwcnts Enhanced Interfaced Test and Modelingmentioning

confidence: 99%

Experimental and numerical investigation of T‐joints with multiwalled carbon nanotubes

Zhu

Tao

et al. 2021

Polymer Composites

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Combined experimental and numerical methods were used to study the mechanical properties of multiwalled carbon nanotubes (MWCNTs) enhanced composite T-joints in this article. Herein, an enhanced interface model was created based on the interface mechanical properties with MWCNTs obtained by a flatwise tension test and a single-lap shear test. Then, the finite element model of composite T-joints with MWCNTs was developed with a cohesive zone model to study the damage initiation, evolution, and final failure process of T-joints. Meanwhile, a quasi-static tensile test of the T-joints was carried out to compare with the numerical analysis results. The study results showed that the out-of-plane tensile strength and the in-plane shear strength of MWCNTs enhanced composite increased by up to 26.3%(@3 g/m 2) and 23.4%(@2 g/m 2), respectively. The properties of the filler, which was the weakest part of the T-joints, can be enhanced by adding MWCNTs. The overall bearing capacity of the T-joints was 18.8%(@2 g/m 2 MWCNTs) increase under tensile loading. Predictions given by the FEM of composite T-joints were in good agreement with the experimental results. This article provides a method for analyzing and predicting the complex composite structure enhanced with MWCNTs, which can be used for functional structure design.

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“…However, due to his heterogeneous microstructure the A6061 is prone to localized corrosion, a drawback that limits its technical applications especially in an aggressive environment [2][3][4]. Currently, many researchers have investigated anodizing process to improve the surface performance and corrosion resistance of aluminum alloys [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Effect of Surface Preparation on Mechanical Properties of Anodized A6061 in Sulfuric Acid Bath

Sahli¹,

Djema

Bouabdallah

et al. 2022

ENPESJ

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The aims of this work are to examine the effect of the pickling conditions on the mechanical behavior of anodized A6061. Pickling was explored at 60°C for 30, 60, 90 and 120 second. The growth rate of the anodic layer, surface roughness, microhardness and tensile strength of anodized samples treated by alkaline pickling were investigated. The experimental results showed that the thickness of the anodic layer is directly related to the roughness of the substrate. In addition an important growth in thickness layer affects slightly the mechanical proprieties.

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Effect of aluminum anodizing in phosphoric acid electrolyte on adhesion strength and thermal performance

Cited by 23 publications

References 26 publications

Effect of the Anodizing Temperature on Microstructure and Tribological Properties of 6061 Aluminum Alloy Anodic Oxide Films

Effect of the Anodizing Temperature on Microstructure and Tribological Properties of 6061 Aluminum Alloy Anodic Oxide Films

Experimental and numerical investigation of T‐joints with multiwalled carbon nanotubes

Effect of Surface Preparation on Mechanical Properties of Anodized A6061 in Sulfuric Acid Bath

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