Fabricating antibacterial CoCrCuFeNi high-entropy alloy via selective laser melting and in-situ alloying

Gao, Jingbo; Jin, Yuting; Fan, Yongqiang; Xu, Dake; Meng, Lei; Wang, Cong; Yu, Yuanping; Zhang, Deliang; Wang, Fuhui

doi:10.1016/j.jmst.2021.07.002

Cited by 46 publications

(16 citation statements)

References 24 publications

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“…The present research confirms that the HEAs have better antibacterial rates than conventional materials, effectively killing bacteria in the planktonic state while providing a better antagonistic effect on the formation of biofilm. [35][36][37][38] To further improve the antibacterial properties of HEAs, the application of advanced manufacturing processes in the preparation of antibacterial HEAs has also been explored recently. The quasi-equiatomic CoCrCuFeNi HEAs are fabricated by the selected laser melting (SLM) and traditional ingot metallurgy (IM) process.…”

Section: Antibacterial Propertiesmentioning

confidence: 99%

Corrosion‐Resistant Biomedical High‐Entropy Alloys: A Review

Shi,

Fang,

Liaw

et al. 2023

Adv Eng Mater

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High entropy alloys (HEAs) exhibit the outstanding properties, such as excellent antibacterial property, remarkable biocompatibility, and superior corrosion resistance, in the field of biomedical applications. Herein, we summarize the biomedical function of HEAs in aspects of the antibacterial behavior against planktonic gram‐negative/gram‐positive bacteria and biofilms, the biocompatibility inspired by low‐ cytotoxicity alloying elements. Considering the corrosive service environment of biomedical device, the corrosion behavior and mechanism are discussed in terms of alloying elements (Al, Ni, Cr, and Cu) and microstructure (phase composition and grain size). Additionally, the promising approaches to simultaneously achieve biomedical function and corrosion resistance, the possible application of additive manufacturing, and the prospective effects of short‐range orderings on the corrosion resistance are simply discussed.This article is protected by copyright. All rights reserved.

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Section: Antibacterial Propertiesmentioning

confidence: 99%

Corrosion‐Resistant Biomedical High‐Entropy Alloys: A Review

Shi,

Fang,

Liaw

et al. 2023

Adv Eng Mater

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“…[16] It further promotes the in situ alloying of raw powder materials during the LPBF building. [17,18] Therefore, LPBF technology can not only meet the precision forming of TiAl-based complex components but also facilitate to create the unique metastable microstructures and improve the overall performance of as-fabricated components.…”

Section: Doi: 101002/adem202200846mentioning

confidence: 99%

Ball Milling Treatment of Nb and B Nanoparticles Modified TiAl4822 Composite Powder and Its Effect on Powder Bed Quality and Powder Spreadability in Additive Manufacturing

Luo

Fang

et al. 2023

Adv Eng Mater

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Ball milling treatment is a low‐cost and achievable large‐scale production method for preparing the composite powder used for the laser powder bed fusion (LPBF) process. For the ball‐milled composite powder, good powder spreadability and composition homogeneity are essential for obtaining the LPBF‐fabricated part with good forming quality. In this article, the Nb and B nanoparticles modified TiAl4822 composite powder with a nominal composition of Ti‐47.53Al‐1.98Cr‐2.81Nb‐0.15B are prepared via ball milling. It is found that the physical properties of the composite powder are more sensitive to the milling time than the milling speed and ball‐to‐powder ratio. Long‐time milling is inclined to cause the formation of broken particles, poor powder flowability, and high oxygen contamination. Besides, the process maps between the ball milling energy E t and particle size distribution width, the static angle of repose, composition inhomogeneity, and oxygen content are established, respectively. Results show that when the applied E t is insufficient or excessive, the degree of sphericity or composition homogeneity always worsens. In these cases, deposition defects such as line or area defects are more prone to occur, due to the enhanced particle rearrangement resistance induced by the addition of nanoparticles.

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“…Because of the abuse of antibiotics over the whole world, some bacteria exhibit high multidrug-resistance (MDR). Lately, another CoCrCuFeNi AHEA has been successfully synthesized based on the research on the Al 0.4 CoCrCuFeNi AHEA (Gao et al, 2022). The experimental results suggest that the bacteria resistance against the Gramnegative Acinetobacter baumannii and Gram-positive methicillin-resistant Staphylococcus aureus of the new CoCrCuFeNi AHEA can approach ∼99%, far exceeding the conventional Cu-bearing stainless steel.…”

Section: Biology Antibiosismentioning

confidence: 99%

A Focused Review on Engineering Application of Multi-Principal Element Alloy

et al. 2022

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Compared with traditional alloys with one principal component up to 40–90%, multi-principal element alloys (MPEAs) were born in the complicated intermingling of traditional and non-traditional physical metallurgy, and brings us a great amount of excellent performances. Here, we would briefly summarize the potential applications in some key areas, which is helpful for latecomers to quickly and comprehensively understand this new alloy system. Especially, the applications of MPEAs in aerospace, industrial equipment, national defense, energy, navigation and so on are discussed roughly. Subsequently, several emerging areas have also been compared. Finally, some suggestions are given for the future development trend.

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Fabricating antibacterial CoCrCuFeNi high-entropy alloy via selective laser melting and in-situ alloying

Cited by 46 publications

References 24 publications

Corrosion‐Resistant Biomedical High‐Entropy Alloys: A Review

Corrosion‐Resistant Biomedical High‐Entropy Alloys: A Review

Ball Milling Treatment of Nb and B Nanoparticles Modified TiAl4822 Composite Powder and Its Effect on Powder Bed Quality and Powder Spreadability in Additive Manufacturing

A Focused Review on Engineering Application of Multi-Principal Element Alloy

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