Электронная почта: [email protected]
2022930 · Since 2017, the European Union (EU) regulatory framework for Co–Cr alloys has been undergoing profound changes. A new EU Medical Devices Regulation (MDR) (2017/745) will be applied in May 2021 with the need to consider that Co metal is
contact2021101 · In 2017, the European Union (EU) Committee for Risk Assessment (RAC) recommended the classification of metallic cobalt (Co) as Category 1B with respect to its
contact202011 · In CoCr alloys, cobalt serves as the base FCC (face-centered-cubic, α-Co) crystal structure of these alloys. On its own, it is known to have low stacking fault energy
contact20201218 · Alloy CoCr 3.002. Dentaurum (Germany) 31.0–35.0 28.0–32.0. ... Since the 1990s, the European legislature has focused on the regulation of medical devices in
contact2016612 · 1b.1 Introduction. Cobalt-chromium (CoCr) alloys have been extensively used for making various orthopedic, dental, and cardiovascular implants and devices.
contactThis opened new possibilities for the use of titanium-alloys with improved properties (E-module). The aim of this study was to summarise the use of titanium in removable
contact2010713 · CoCr alloy surfaces are known to oxidize with the formation of stable Cr2O3 protecting films. However, the inherent mechanisms initiating the selective
contactBackground: The use of titanium alloy (Ti) rods is frequently associated with rod fracture after spinal fixation. To address this issue, cobalt chrome (CoCr) rods, which are
contactThis paper sought to determine corrosion resistance changes in the artificial saliva of a CoCrMoW-based alloy used for dental prostheses under Nd:YAG laser welding with
contactBackground: The toxicological risk of Co-Cr dental alloys is actually a sensitive subject with the European regulatory changes, namely regulation (EU) 2017/745 and annex VI to the CLP regulation (EC) 1972/2008. Objectives: The objective of this review is to conduct a rigorous analysis of the cytocompatibility of cobalt–chromium (Co-Cr) dental
contact2020527 · Europe PMC is an archive of life sciences journal literature.
contactThis paper sought to determine corrosion resistance changes in the artificial saliva of a CoCrMoW-based alloy used for dental prostheses under Nd:YAG laser welding with CoCr alloy and stainless steel wire filler metals. The paper presents the corrosion characteristics of such joints, including the next stage of porcelain-fused-to-metal (PFM) firing.
contact2 · Cobalt-chrome (CoCr) is a metal alloy that has outstanding strength, as well as wear and corrosion resistance. Because of these features and itâ s biocompatibility, Cobalt-chrome is often used ...
contact2023322 · MXene/CoCr 2 O 4: 417.9: 1M KOH [88] MXene/Ag 2 CrO 4: 525: 0.1M H 2 SO 4 [89] MXene/CuCr 2 O 4: 445.5: 0.1M H 2 SO 4: ... Journal of the European Ceramic Society, 27 (2-3) (2007), pp. 903-907. Google Scholar. 16. ... Influence of the Chromium Content in Low-Alloyed Cu–Cr Alloys on the Structural Changes, Phase Transformations
contact2022628 · The majority of stellites used in dentistry contain about 60% Co and 25% Cr, which ensure the biocompatibility of the alloy. Alloys may also contain small amounts of molybdenum (Mo), tungsten (W), and other metals [ 10][ 16]. Cobalt and chromium form a solid solution if the latter is found up to about 30%, according to the Co–Cr diagram.
contact2022317 · Herein, we report in-situ NiCo alloy nanoparticle formation of extremely small diameter (1–5 nm) on nitrogen (N)-doped carbon spheres by the CVD method at 750 °C temperature, followed by its use in oxygen evolution reaction (OER) electrocatalysis. Secondary electron microscope (SEM) imaging shows the open as well as close cup
contact2015220 · the biocompatibility of a metal alloy are its chemical compo-sition and corrosion resistance. In addition, there is growing concern for metal ion release from implanted materials. Ion ... 6-aluminum 7-niobium alloy Yes, Europe ISO 5832-12: 2007 Implants for surgery – Metallic alloys – Part 12: Wrought cobalt-chromium-molybdenum
contact2019214 · CoCrMo is typically used for: – Gas turbines – Orthopaedic implants – Dental implants. 1.4 Powder specification. The Arcam ASTM F75 CoCr alloy powder for EBM is produced by gas atomization and the chemical composition complies with the ASTM F75 ...
contact2022818 · Cobalt chromium (CoCr) alloy tubes have been widely used in manufacturing of vascular stents, due to their excellent bio-mechanical properties, especially their high strength. In recent years, fiber
contactBackground: The toxicological risk of Co-Cr dental alloys is actually a sensitive subject with the European regulatory changes, namely regulation (EU) 2017/745 and annex VI to the CLP regulation (EC) 1972/2008. Objectives: The objective of this review is to conduct a rigorous analysis of the cytocompatibility of cobalt–chromium (Co-Cr) dental
contact2019927 · The maximum von Mises stresses of the CoCr alloy, Ti alloy and PEEK framework were 375.48 ± 39.31 MPa, 240.17 ± 67.52 MPa and 99.54 ± 16.98 MPa (mean ± SD) respectively.
contact20201223 · The optimized laser polishing parameters were initially obtained from the experimental tests carried out on CoCr alloy planar surfaces. Surface roughness reductions up to 93%, comparable to the results obtained on planar surfaces, were achieved on complex surface geometry. In general, a significant improvement of the fatigue life of AM
contact201511 · In this chapter, first, the history and current status of biomedical Co-Cr alloys such as Co-28Cr-6Mo and Co-20Cr-15W-10Ni alloys are reviewed. Their microstructure, processing, and properties are ...
contact2020824 · Europe PMC is an archive of life sciences journal literature.
contact20161021 · Another classification of the Co-Cr alloys focuses on Ni content. The Ni content in ASTM F 75 alloy is required to be less than 0.5 mass%, and the Ni contents in ASTM F 799 and F 1537 alloys are required to be less than 1.0mass%. Other Co-Cr alloys such as ASTM F 90 (Co-20Cr-15W-10Ni), ASTM F 562 (Co-35Ni-20Cr-10Mo), and
contact2017921 · test specimens) made of Co–Cr dental alloys were produced by lost-wax casting and SLM processes. Vickers hardness distribution along the depth of the dental bridges as well as the Rockwell hardness and tensile strength of the samples were studied out. The hardness of CoCr – dental alloys are dependent on the manufacturing technique
contact2015220 · the biocompatibility of a metal alloy are its chemical compo-sition and corrosion resistance. In addition, there is growing concern for metal ion release from implanted materials. Ion ... 6-aluminum 7-niobium alloy Yes, Europe ISO 5832-12: 2007 Implants for surgery – Metallic alloys – Part 12: Wrought cobalt-chromium-molybdenum
contact2019214 · CoCrMo is typically used for: – Gas turbines – Orthopaedic implants – Dental implants. 1.4 Powder specification. The Arcam ASTM F75 CoCr alloy powder for EBM is produced by gas atomization and the chemical composition complies with the ASTM F75 ...
contact202118 · Brief Summary: In the current prospective, randomized study, two different materials of the same total knee arthroplasty (TKA) system - cobalt-chromium (CoCr) and titanium-nitride (TiN) - are going to be compared with regards to postoperative outcome. Two-hundred patients are planned to be included in the study over a 4-year period,
contact2017824 · The recommended mechanical properties for the CoCr alloys for fixed and removable dental restorations and appliances are reflected in the ISO 22674 [].Few studies compared the mechanical
contact2020527 · Europe PMC is an archive of life sciences journal literature.
contact201511 · In this chapter, first, the history and current status of biomedical Co-Cr alloys such as Co-28Cr-6Mo and Co-20Cr-15W-10Ni alloys are reviewed. Their microstructure, processing, and properties are ...
contact2023322 · MXene/CoCr 2 O 4: 417.9: 1M KOH [88] MXene/Ag 2 CrO 4: 525: 0.1M H 2 SO 4 [89] MXene/CuCr 2 O 4: 445.5: 0.1M H 2 SO 4: ... Journal of the European Ceramic Society, 27 (2-3) (2007), pp. 903-907. Google Scholar. 16. ... Influence of the Chromium Content in Low-Alloyed Cu–Cr Alloys on the Structural Changes, Phase Transformations
contactThis paper sought to determine corrosion resistance changes in the artificial saliva of a CoCrMoW-based alloy used for dental prostheses under Nd:YAG laser welding with CoCr alloy and stainless steel wire filler metals. The paper presents the corrosion characteristics of such joints, including the next stage of porcelain-fused-to-metal (PFM) firing. Corrosion
contact202252 · Cobalt–chromium (Co-Cr) alloys have been widely used as dental-restoration materials for many years. This study sought to investigate whether selective laser melting (SLM) is a more appropriate process than traditional casting (CAST) for fabricating dental Co-Cr alloys. Metallurgical microscopy, X-ray photoelectron spectroscopy (XPS),
contact2 · Cobalt-chrome (CoCr) is a metal alloy that has outstanding strength, as well as wear and corrosion resistance. Because of these features and itâ s biocompatibility, Cobalt-chrome is often used ...
contact2015220 · the biocompatibility of a metal alloy are its chemical compo-sition and corrosion resistance. In addition, there is growing concern for metal ion release from implanted materials. Ion ... 6-aluminum 7-niobium alloy Yes, Europe ISO 5832-12: 2007 Implants for surgery – Metallic alloys – Part 12: Wrought cobalt-chromium-molybdenum
contact2019214 · CoCrMo is typically used for: – Gas turbines – Orthopaedic implants – Dental implants. 1.4 Powder specification. The Arcam ASTM F75 CoCr alloy powder for EBM is produced by gas atomization and the chemical composition complies with the ASTM F75 ...
contact2022317 · Herein, we report in-situ NiCo alloy nanoparticle formation of extremely small diameter (1–5 nm) on nitrogen (N)-doped carbon spheres by the CVD method at 750 °C temperature, followed by its use in oxygen evolution reaction (OER) electrocatalysis. Secondary electron microscope (SEM) imaging shows the open as well as close cup
contact