CoCrWCu alloy with antibacterial activity fabricated by selective laser melting: Densification, mechanical properties and microstructural analysis

Lu, Yanjin; Ren, Ling; Wu, Songquan; Yang, Chun‐Chieh; Lin, Wenbin; Xiao, Suli; Yang, Yang; Yang, Ke; Lin, Jinxin

doi:10.1016/j.powtec.2017.11.018

Cited by 46 publications

(19 citation statements)

References 52 publications

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“…Using the SLM method, Ren et al successfully engineered a CoCrWCu alloy showing strong antibacterial and anti-biofilm properties (Ren et al, 2016). The 3 wt% CoCrWCu alloy is expected to become a dental restoration material candidate due to its superior corrosion resistance, mechanical properties, antibacterial properties, and biocompatibility (Lu et al, 2018). In addition to alloying Cu, a Co-30wt%Cr-5wt% Ag ternary alloy was developed by doping Ag into Co-Cr alloy and showed excellent antibacterial ability (Jiang et al, 2019).…”

Section: Antibacterial Co-based Alloymentioning

confidence: 99%

Recent Advances in Research on Antibacterial Metals and Alloys as Implant Materials

Jiao

Zhang

et al. 2021

Front. Cell. Infect. Microbiol.

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Implants are widely used in orthopedic surgery and are gaining attention of late. However, their use is restricted by implant-associated infections (IAI), which represent one of the most serious and dangerous complications of implant surgeries. Various strategies have been developed to prevent and treat IAI, among which the closest to clinical translation is designing metal materials with antibacterial functions by alloying methods based on existing materials, including titanium, cobalt, tantalum, and biodegradable metals. This review first discusses the complex interaction between bacteria, host cells, and materials in IAI and the mechanisms underlying the antibacterial effects of biomedical metals and alloys. Then, their applications for the prevention and treatment of IAI are highlighted. Finally, new insights into their clinical translation are provided. This review also provides suggestions for further development of antibacterial metals and alloys.

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Section: Antibacterial Co-based Alloymentioning

confidence: 99%

Recent Advances in Research on Antibacterial Metals and Alloys as Implant Materials

Jiao

Zhang

et al. 2021

Front. Cell. Infect. Microbiol.

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“…Among the various AM techniques, selective laser melting (SLM) uses a high energy laser as the heat source to selectively melt pre-deposited powder bed, and is regarded as one of the most advanced & promising AM techniques [3,4]. Its process is characterized by a number of key parameters, including metal powder as raw material, laser beam size and output power, scanning speed, and layer thickness [5].…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Study of Steel Powders (316L, H13, P20 and 18Ni300) for Their Selective Laser Melting Additive Manufacturing

Yan

Zhou

et al. 2019

Metals

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The determination of microstructural details for powder materials is vital for facilitating their selective laser melting (SLM) process. Four widely used steels (316L, H13, P20 and 18Ni300) have been investigated to detail their powders’ microstructures as well as laser absorptivity to understand their SLM processing from raw material perspective. Phase components of these four steel powders were characterized by X-ray diffraction (XRD), synchrotron radiation X-ray diffraction (SR-XRD) and scanning electron microscopy (SEM). X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) were utilized to reveal the surface structure of these four steel powders. It is found that phase components of H13, P20 and 18Ni300 are mainly composed of martensite and a small amount of austenite due to the high cooling rate during gas atomization processing, while 316L is characterized by austenite. XPS results show that the four steel powders all possess a layered surface structure, consisting of a thin iron oxide layer at the outmost surface and metal matrix at the inner surface. It is found that the presence of such oxide layer can improve the absorptivity of steel powders and is beneficial for their SLM process.

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“…The disadvantages of milling are the waste of materials and limited potential for complex products compared with casting and SLM [ 8 ]. SLM is a laser-based additive manufacturing technology, which is widely used in medical fields in recent years, especially for dental restorations like customized crowns, bridges, abutments, and screw-retained restorations [ 9 , 10 , 11 , 12 , 13 ]. SLM produces the metal substrate by fusing metal powder in layers without much porosity.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Mechanical Properties and Metal-Ceramic Bond Strength of Co-Cr Dental Alloy Fabricated by Different Manufacturing Processes

et al. 2018

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Cobalt-chromium (Co-Cr) alloy is a widely used base material for dental fixed prostheses. These restorations can be produced through casting technique, subtractive or additive manufacturing technologies. However, limited information is available regarding the influence of manufacturing techniques on the properties of Co-Cr alloy since most studies used different chemical compositions of Co-Cr alloy for different manufacturing methods. This study compares the mechanical properties, metal-ceramic bond strength, and microstructures of specimens produced by casting, milling, and selective laser melting (SLM) from one single Co-Cr alloy composition. The mechanical properties of the alloy were investigated by tensile and Vickers hardness tests, and metal-ceramic bond strength was determined by three-point bending. Scanning electron microscopy (SEM) with backscattered electron (BSE) images and optical microphotographs were used to analyze the surface microstructures. Compared with the casting and milling techniques, SLM Co-Cr alloy specimens indicated enhanced mechanical properties and comparable metal-ceramic bond strength. Besides, the microstructures of the SLM specimens showed finer grains with more second phase particles than the casting and milling specimens. The results of our study indicate that SLM might be superior to traditional techniques for the manufacturing of fixed dental restorations.

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CoCrWCu alloy with antibacterial activity fabricated by selective laser melting: Densification, mechanical properties and microstructural analysis

Cited by 46 publications

References 52 publications

Recent Advances in Research on Antibacterial Metals and Alloys as Implant Materials

Recent Advances in Research on Antibacterial Metals and Alloys as Implant Materials

A Comprehensive Study of Steel Powders (316L, H13, P20 and 18Ni300) for Their Selective Laser Melting Additive Manufacturing

Comparative Analysis of Mechanical Properties and Metal-Ceramic Bond Strength of Co-Cr Dental Alloy Fabricated by Different Manufacturing Processes

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