Abstract
The paper focuses on surface characterization of cardiovascular metal stents fabricated by a promising laser-based additive manufacturing technique. The prototype stents were developed and printed by the laser powder bed fusion (LPBF) process using a biocompatible Co-Cr alloy powder. The chemical composition and microanalysis of the powder and LPBF-built alloy are addressed. The stent geometry, strut thickness, surface morphology, and defects on the surface of the 3D-printed stent strut are also studied. Results indicated that the LPBF-built stent test parts are characterized by the required geometrical accuracy, having the chemical composition without changes. The rough surface is formed in the 3D printed stents, containing various the surface defects. The macrodefects in the LPBF-built Co-Cr alloy stents were not found.
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Lesyk, D., Lymar, O., Dzhemelinkyi, V. (2021). Surface Characterization of the Cobalt-Based Alloy Stents Fabricated by 3D Laser Metal Fusion Technology. In: Karabegović, I. (eds) New Technologies, Development and Application IV. NT 2021. Lecture Notes in Networks and Systems, vol 233. Springer, Cham. https://doi.org/10.1007/978-3-030-75275-0_40
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DOI: https://doi.org/10.1007/978-3-030-75275-0_40
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