Fabrication of microscaffolds from Ti-6Al-7Nb alloy by SLM

Pawlak, A.; Szymczyk, Patrycja; Ziółkowski, Grzegorz; Chlebus, Edward; Dybała, Bogdan

doi:10.1108/rpj-10-2013-0101

Cited by 23 publications

(19 citation statements)

References 13 publications

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“…The structure of cellulose coating the implants visualized by SEM is presented in Fig 2 . It should be emphasized that as we have proven in our earlier work, the presence of un-sintered metal powder (as seen in Fig 2B ) does not affect the mechanical properties of the implants manufactured [ 30 , 31 ]. Additional data concerning the chemical composition of the manufactured scaffolds are presented in S1 Table .…”

Section: Resultsmentioning

confidence: 66%

Development and biological evaluation of Ti6Al7Nb scaffold implants coated with gentamycin-saturated bacterial cellulose biomaterial

et al. 2018

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Herein we present an innovative method of coating the surface of Titanium-Aluminium-Niobium bone scaffold implants with bacterial cellulose (BC) polymer saturated with antibiotic. Customized Ti6Al7Nb scaffolds manufactured using Selective Laser Melting were immersed in a suspension of Komagataeibacter xylinus bacteria which displays an ability to produce a 3-dimensional structure of bio-cellulose polymer. The process of complete implant coating with BC took on average 7 days. Subsequently, the BC matrix was cleansed by means of alkaline lysis and saturated with gentamycin. Scanning electron microscopy revealed that BC adheres and penetrates into the implant scaffold structure. The viability and development of the cellular layer on BC micro-structure were visualized by means of confocal microscopy. The BC-coated implants displayed a significantly lower cytotoxicity against osteoblast and fibroblast cell cultures in vitro in comparison to non-coated implants. It was also noted that gentamycin released from BC-coated implants inhibited the growth of Staphylococcus aureus cultures in vitro, confirming the suitability of such implant modification for preventing hostile microbial colonization. As demonstrated using digital microscopy, the procedure used for implant coating and BC chemical cleansing did not flaw the biomaterial structure. The results presented herein are of high translational value with regard to future use of customized, BC-coated and antibiotic-saturated implants designed for use in orthopedic applications to speed up recovery and to reduce the risk of musculoskeletal infections.

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Section: Resultsmentioning

confidence: 66%

Development and biological evaluation of Ti6Al7Nb scaffold implants coated with gentamycin-saturated bacterial cellulose biomaterial

et al. 2018

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“…The AM technologies outlined above offer the possibility to efficiently use alloying elements and hence obtain new alloys with better mechanical and thermal properties, and/or with increased resistance to abrasive and corrosive wear [56]. Moreover, the features of the process such as layer by layer and selective melting of the powder material enable manufacturing of parts with complex shapes and any designed (solid or having the designed porosity) internal geometry [57]. These advantages of AM technologies, and in particular of L-PBF, make them increasingly popular in the industry.…”

Section: L-pbf Technologymentioning

confidence: 99%

The potential of SLM technology for processing magnesium alloys in aerospace industry

Kurzynowski

Pawlak

Smolina

2020

Archiv.Civ.Mech.Eng

100

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Selective Laser Melting (SLM) of magnesium alloys is the technology undergoing dynamic development in many research centres. The results are promising and make it possible to manufacture defect-free material with better properties than those offered by the manufacturing technologies used to date. This review aims to evaluate present state as well as main challenges of using Laser Powder Bed Fusion (L-PBF) for processing magnesium alloys as an alternative way to conventional technologies to manufacture parts in the aerospace industry. This literature review is the first one to outline information concerning the potential to use magnesium alloys in the aerospace industry as well as to summarise the results of magnesium alloy processing using AM technologies, in particular L-PBF. The available literature was reviewed to gather information about: the use of magnesium alloys in the aerospace industry-the benefits and limitations of using magnesium and its alloys, examples of applications using new processing methods to manufacture aerospace parts, the benefits and potential of using L-PBF to process metallic materials, examples of the use of L-PBF to manufacture aerospace parts, and state-of-the-art research into L-PBF processing of magnesium and magnesium alloys.

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“…Therefore, Ni-Ti alloy is also a biocompatible metal material [42]. Considering that Nb has excellent corrosion resistance, chemical inertness, and is harmless to the human body [43], it can be combined with biocompatible Ti to form biocompatible Ti-Nb alloys, for example, Ti-6Al-7Nb [44]. However, Al, V, and Ni are toxic ions and should not be released inside the human body.…”

Section: Biocompatible Metallic Materialsmentioning

confidence: 99%

Additive Manufacturing of Customized Metallic Orthopedic Implants: Materials, Structures, and Surface Modifications

Bai

Cheng

Chen

et al. 2019

Metals

132

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Metals have been used for orthopedic implants for a long time due to their excellent mechanical properties. With the rapid development of additive manufacturing (AM) technology, studying customized implants with complex microstructures for patients has become a trend of various bone defect repair. A superior customized implant should have good biocompatibility and mechanical properties matching the defect bone. To meet the performance requirements of implants, this paper introduces the biomedical metallic materials currently applied to orthopedic implants from the design to manufacture, elaborates the structure design and surface modification of the orthopedic implant. By selecting the appropriate implant material and processing method, optimizing the implant structure and modifying the surface can ensure the performance requirements of the implant. Finally, this paper discusses the future development trend of the orthopedic implant.

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Fabrication of microscaffolds from Ti-6Al-7Nb alloy by SLM

Cited by 23 publications

References 13 publications

Development and biological evaluation of Ti6Al7Nb scaffold implants coated with gentamycin-saturated bacterial cellulose biomaterial

Development and biological evaluation of Ti6Al7Nb scaffold implants coated with gentamycin-saturated bacterial cellulose biomaterial

The potential of SLM technology for processing magnesium alloys in aerospace industry

Additive Manufacturing of Customized Metallic Orthopedic Implants: Materials, Structures, and Surface Modifications

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