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Showing 1 to 12 of 12 for “"electropolishing"”.
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Pulsatile Electropolishing of Nitinol Stents
… titanium or chromium present a challenge to electropolishing because the polarization that dissolves the metal species produces positive ions, these oxidize and form stable surface layers of metallic oxides that prevent further dissolution. This is usually overcome with the use of acid …
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Anodic dissolution and electropolishing of copper in phosphoric acid
The present work deals with the phenomena associated with the electrochemical dissolution of Cu in phosphoric acid. The investigation employs not only standard electrochemical methods, but also the purely physical methods of microscopy and schlieren analysis.
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Electropolishing of Niobium in Sulfuric Acid-Methanol Electrolytes: Development of Hydrofluoric Acid-Free Electrolytes
… dependent upon the quality of Nb surface. Electropolishing (EP) in hydrofluoric acid (HF)-containing electrolytes is the currently accepted treatment process. The presence of HF is necessary for the removal of the passive oxide surface film formed in aqueous electrolytes. But HF is …
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Evaluation of Electrochemical and Laser Polishing of Selectively LaserMelted 316L Stainless Steel
… the mechanical strength of a lattice design that electropolishing would have. Electropolishing was found to significantly reduce the surface roughness of the as-printed part, but not to a usable value. Additionally, electropolishing was found to be unacceptable for use on lattice parts. Laser …
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Cu-based shape memory microwires : towards complex structures
… throughout processing of alloys and wires. Electropolishing rates were determined for improving surface texture and size constraint.
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Thin Films for the Transport of Polarized Ultracold Neutrons for Fundamental Symmetry Study
… resulting from the mechanical polishing and electropolishing of the guides that make up the UCNA beamline is presented.
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Investigation of the Superconducting Properties of Niobium Radio-Frequency Cavities
… different treatments, such as anodization, electropolishing and post-purification, and with different metallurgical properties and we study the effectiveness of baking in each case. As a result, none of the models proposed so far can explain all the experimental observations. We elaborated a …
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Enhanced Field Emission Studies on Nioboim Surfaces Relevant to High Field Superconducting Radio-Frequency Devices
… preparation, including chemical etching and electropolishing, combined with ultrasonic or high-pressure water rinse. Emitters have been identified, analyzed and the preparation process has been examined and improved based on EFE results. As a result, field-emission-free or near …
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Improvement to the surface finish of additive laser manufactured parts made by selective laser melting
… technique, laser re-melting followed by electropolishing. In this investigation Renishaw’s SLM 125 was employed to produce 3Dimensional (3D) parts by using stainless steel 316L material with powder particle size ranges from 15 to 45 microns. Samples with different inclinations were …
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Transmission Electron Microscopy Studies In Shape Memory Alloys
… and ex situ lift out focused ion beam (FIB) and electropolishing techniques were employed to fabricate shape memory alloy samples for TEM characterization. The Ni rich NiTi samples were fully austenitic in the undeformed state. The introduction of plastic deformation (8% and 14% in the samples …
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Stents for transcatheter aortic valve replacement
… manufactured through laser cutting and electropolishing and showed good surface quality. In vitro testing included determination of crimping and expansion behaviour and measurement of mechanical properties such as resistance to migration in the anatomy. Valve performance was evaluated …