The effect of deposition voltage on microstructure and properties of silver-containing porous Al alloy

IF 5.3 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology Pub Date : 2025-02-27 DOI:10.1016/j.surfcoat.2025.131982

Jianjun Yang , Junlin Peng , Caihe Fan , Zaiqi Zhang , Jinfeng Li , Danyang Liu , Tao Tao , Wei Zhang , Edward Ghali , Luowei Chen , Qing Wu , Zaiyu Zhang

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引用次数: 0

Abstract

6061 Al alloy has been extensively utilized due to its lightweight nature and excellent mechanical properties. However, its insufficient antibacterial performance limits its applications in medical and specialized environments. To overcome this limitation, this study focuses on the development of a surface functionalization technology for aluminum alloys, aiming to achieve enhanced wear resistance and superior antibacterial properties. In this paper, a silver (Ag)-containing porous layer was prepared on the surface of a 6061 Al alloy using electrochemical pore-forming and Ag⁺ deposition techniques. The effects of different deposition voltages on the microstructure, wear resistance, and antimicrobial properties of the porous layer of 6061 antimicrobial Al alloy were investigated. The results show that Ag in the porous layer primarily combines with O²⁻ and SO₄²⁻ in the form of Ag⁺ to form phases such as Ag₂O and Ag₂SO₄, which appear as white particles. A deposition voltage of 25 V yielded the highest Ag content of 1.92 wt% on the surface of the porous layer, resulting in the best abrasion resistance, and antimicrobial properties. Under these conditions, the wear volume, and antimicrobial rate were 0.067 mm³, and 97.75 %, respectively. In conclusion, the wear resistance, and antibacterial performance of 6061 Al alloys improve with increasing Ag⁺ deposition voltage.

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来源期刊

Surface & Coatings Technology 工程技术-材料科学：膜

CiteScore

10.00

自引率

11.10%

发文量

921

审稿时长

19 days

期刊介绍： Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.