Bartlomiej Wysocki

Bartlomiej Wysocki
Cardinal Stefan Wyszynski University in Warsaw · Multidisciplinary Research Center

Doctor of Philosophy

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29
Publications
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539
Citations

Publications

Publications (29)
Article
Purpose-The purpose of this paper is to investigate the effect of remelting each layer on the homogeneity of nickel-titanium (NiTi) parts fabricated from elemental nickel and titanium powders using laser powder bed fusion (LPBF). In addition, the influence of manufacturing parameters and different melting strategies, including multiple cycles of re...
Article
Full-text available
Technologie wytwarzania przyrostowego metali (tzw. druku 3D) zrewolucjonizowały przemysł wytwórczy poprzez umożliwienie produkcji obiektów o dowolnej geometrii z szerokiej gamy materiałów, np. stali, lekkich stopów aluminium, tytanu, szkieł metalicznych, a nawet kompozytów metal-ceramika. Głównymi odbiorcami, stanowiącymi po-nad 60% całego rynku te...
Article
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The use of elemental metallic powders and in situ alloying in additive manufacturing (AM) is of industrial relevance as it offers the required flexibility to tailor the batch powder composition. This solution has been applied to the AM manufacturing of nickel-titanium (NiTi) shape memory alloy components. In this work, we show that laser powder bed...
Article
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Powder bed fusion using a laser beam (PBF-LB) is a commonly used additive manufacturing (3D printing) process for the fabrication of various parts from pure metals and their alloys. This work shows for the first time the possibility of using PBF-LB technology for the production of 3D titanium substrates (Ti 3D) for surface-enhanced Raman scattering...
Article
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In this work, NiTi alloy parts were fabricated using laser powder bed fusion (LBPF) from pre-alloyed NiTi powder and in situ alloyed pure Ni and Ti powders. Comparative research on the corrosive and biological properties of both studied materials was performed. Electrochemical corrosion tests were carried out in phosphate buffered saline at 37 °C,...
Article
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Additive Manufacturing of scaffolds with controlled porosity has demonstrated its value in many fields such as tissue regeneration and filtration applications. However, there is a scarcity of reports investigating the manufacturing of scaffolds with hollow fibers. Mainly, this was due to the lack of proper tools (extrusion nozzles) that enable the...
Article
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NiTi alloys are widely used in different industrial and medical applications. Due to the inherent difficulty in the machining of these alloys, the use of Additive Manufacturing (AM) methods has become a popular method for their production. When working with NiTi alloys, there is a requirement on the precise control of their chemical composition, as...
Article
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Dental implants are, nowadays, established surgical devices for the restoration of lost teeth. Considered as an alternative for traditional prosthetic appliances, dental implants surpass them in reliability and patient feedback. Local drug delivery around the implants promotes osseointegration and reduces peri-implantitis. However, there are curren...
Article
Nickel–titanium (NiTi) alloys have shown promise for a variety of biomedical applications because of their unique properties of shape memory, superelasticity, and low modulus of elasticity (Young's modulus). Nevertheless, NiTi bulk components cannot be easily machined (e.g., CNC, rolling, grinding, casting, or press molding) due to their thermomech...
Article
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A new powder production method has been developed to speed up the search for novel alloys for additive manufacturing. The technique involves an ultrasonically agitated cold crucible installed at the top of a 20 kHz ultrasonic sonotrode. The material is melted with an electric arc and undergoes pulverization with standing wave vibrations. Several di...
Article
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Selective Laser Melting (SLM) is a manufacturing technique that is currently used for the production of functional parts that are difficult to form by the traditional methods such as casting or CNC (Computer Numerical Control) cutting from a wide range of metallic materials. In our study, a mixture of commercially pure titanium (Ti) and 15% at. alu...
Patent
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A composite coating and method for preparing the composite coating on titanium implants for tissue culture and tissue engineering is provided. The implants are characterized in that the titanium component to be coated is placed in a aqueous solution containing calcium cations, phosphate anions, and dispersed carbon nanoparticles (such as single lay...
Article
The paper presents a new approach to selective laser melting (SLM) of alloys with low glass-forming ability and the basics of microstructure evolution during SLM of iron-based metallic glasses. After extensive parameters optimization, a novel scanning strategy, involving two-step melting, comprising preliminary laser melting, followed by short-puls...
Article
Full-text available
The use of laser 3D printers is very perspective in the fabrication of solid and porous implants made of various polymers, metals, and its alloys. The Selective Laser Melting (SLM) process, in which consolidated powders are fully melted on each layer, gives the possibility of fabrication personalized implants based on the Computer Aid Design (CAD)...
Article
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The article presents the results of experimental and numerical studies of titanium scaffolds for cell cultures. In structural studies using scanning microscopy, the influence of incremental technology and technological process parameters on the shape and the size of the designed pores was analyzed. The designed constructions of various sizes and po...
Article
Selective Laser Melting (SLM) is a powder-bed-based additive manufacturing method, using a laser beam, which can be used to produce metallic scaffolds for bone regeneration. However, this process also has a few disadvantages. One of its drawbacks is the necessity of post-processing in order to improve the surface finish. Another drawback lies in th...
Article
he effect of the morphology of open-cell foam structures on their functional properties is investigated. A stochastic microstructure model is used to generate representative 3D open-cell foam structures, where morphological properties are systematically varied. Subsequently, permeability of these virtual, but realistic microstructures is determined...
Article
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Additive Manufacturing (AM) methods are generally used to produce an early sample or near net-shape elements based on three-dimensional geometrical modules. To date, publications on AM of metal implants have mainly focused on knee and hip replacements or bone scaffolds for tissue engineering. The direct fabrication of metallic implants can be achie...
Article
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Druk 3D jako metoda umożliwiająca wytwarzanie obiektów o skomplikowanej geometrii oraz dużej dokładności odwzorowania kształtu i wymiarów podbija wiele gałęzi przemysłu. Dzieje się tak dzięki coraz bardziej wydajnym urządzeniom do druku 3D oraz rosnącemu spektrum materiałów polimerowych, metalicznych i kompozytowych możliwych do zastosowania w tej...
Article
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Laser Engineering Net Shaping (LENS), which is one of the 3DP techniques, allows for both – the production and the modification of surface layer of the product previously prepared. In the current work, using LENS technique, highly developed bioactive layers, were prepared on the surface of the hip prosthesis. Both, fabricated layers and hip prosthe...
Article
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In the paper optimization process for selective laser melting of Fe-based metallic glass powder has been described. Melting process has been conducted with various laser strategies and parameters to increase materials amorphisation degree. Results showed strong influence of melt pool mixing and heating rate on amorphisation. KEYWORDS: selective l...
Article
The aim of this study was the characterization of the microstructure and the mechanical properties of commercially pure titanium (CP Ti) processed by Selective Laser Melting (SLM) in a regulated reactive atmosphere with a slight addition of oxygen (0.2–0.4 vol. %) to enhance the mechanical properties of the material. This work is one of the first e...
Article
Full-text available
Nowadays, post-surgical or post-accidental bone loss can be substituted by custom-made scaffolds fabricated by additive manufacturing (AM) methods from metallic powders. However, the partially melted powder particles must be removed in a post-process chemical treatment. The aim of this study was to investigate the effect of the chemical polishing w...
Article
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Surface functionalisation of carbon nanotubes (CNTs) provides possibility of employing them in the biomedical industry as drug/growth factor carriers improving healing of a patient after injury. Carbon nanotubes are also very perspective nanomaterials as reinforcement in composites because of their mechanical properties. In the present work, single...
Conference Paper
Full-text available
The custom-made scaffolds fabricated by Additive Manufacturing (AM) methods can fulfil these days post-surgical or post-accidental bone loss. Scaffolds are structures which mimics natural bone and facilitate three-dimensional tissue growth when living tissue cells are seeded on them by tissue engineering methods. Interconnected pore system with por...

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Question
Are there any books or publications with the melting temperature of Ni2Ti4Ox?

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Projects

Projects (6)
Project
The project aim is to create a Multidisciplinary Research Center (MCB). Its main element is the construction of a unique research center in the field of digital sciences, which priority will be creating and introducing innovative solutions of digital technologies in the economy and the implementation of state tasks at various levels related to digital transformation.
Project
The project hypothesis says that by combining computer modeling, 3D printing and anodization methods it is possible to synthesize multifunctional three-dimensional titanium-based materials with complex micro and nanoporosity that will have desired properties. Authors of this project suggest that such materials will have an ability to enhance osseointegration and at the same time, due to the incorporation of e.g., antibiotics, suppress bacterial adhesion to the implant surface. Therefore, proposed within this project materials, seems to be an interesting alternative for the conventionally used implants. Computer modeling methods will be applied in order to predict the porous structure and mechanical properties of titanium scaffolds. Such three-dimensional models will be then printed using a selective laser melting (SLM) method. Subsequently, synthesized titanium scaffolds will be used for the anodization process in order to receive nanostructural titanium oxide layers on Ti. Then, as-received structures will be functionalized by the deposition of silver and/or zinc oxide nanoparticles that are known for their antibacterial properties. Moreover, drug release test from the synthesized 3D porous scaffolds will be performed. Two model pharmaceuticals will be used for the determination of release kinetics. The microbiological tests will be applied for the assessment of antibacterial properties of the selected samples. Finally, bioactivity and biocompatibility of the synthesized structures will be examined.
Project
The main goal of the project is to develop a novel scaffold-based in vivo tissue engineering approach to regenerate large bone defects (iTE) in oncological patients.