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Microstructure, Hardness and Corrosion Resistance of

2021420 · This work presents the new comparative results of Co–Cr alloys, including the surface hardness, mechanical and electrochemical corrosion properties. Two types of

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: N. Zidan, M. H. AL-Saadi

The microstructure, mechanical and electrochemical

2023224 · Figure 5 shows the porosity appearance of the CoCr alloy printed from virgin powder on a 2D surface (a) and a 3D microCT image (b), as well as for the same

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CoCr Alloys - ScienceDirect

202011 · 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

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Plastic deformation mechanism of CoCrxNi medium

2021513 · Chemical compositions of CoCr x Ni alloys measured by EPMA are shown in Table 1, which are close to the nominal compositions.The microstructures of the fully

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: Jiaohui Yan, Wei Fang, Jiaxin Huang, Jinfei Zhang, Ruobin Chang, Xin Zhang, Baoxi Liu, Jianhang Feng...

Origin of the Selective Cr Oxidation in CoCr Alloy Surfaces

2010713 · CoCr alloy surfaces are known to oxidize with the formation of stable Cr2O3 protecting films. However, the inherent mechanisms initiating the selective

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: Janina Zimmermann, Janina Zimmermann, Lucio Colombi Ciacchi, Lucio Colombi Ciacchi

(PDF) Co-Cr Alloys as Effective Metallic

201511 · 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 ...

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Frontiers | Additive Manufacturing of Co-Cr-Mo

201533 · Co-Cr-Mo alloy samples, fabricated using Laser Engineered Net Shaping – a laser-based additive manufacturing technology, have been subjected to heat treatment to study its influence on microstructure,

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Machining of Cobalt Chromium Molybdenum (CoCrMo)

2021620 · Cobalt chromium molybdenum (CoCrMo) alloys categorized as great material in many engineering fields of applications such as biomedical, aero-engine, gas

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(PDF) Investigation of CoCr Dental Alloy: Example from a

2021722 · Three groups of dental alloys were prepared by mixing 50% brand new alloy with alloy remnants from previous castings. The first group used 100% brand new

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A novel coping metal material CoCrCu alloy fabricated by

2016101 · Objective: The aim of this study was to fabricate a novel coping metal CoCrCu alloy using a selective laser melting (SLM) technique with antimicrobial and

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Effect of Ni, W and Mo on the microstructure, phases and

202048 · Friction and wear behaviors of CoCr matrix alloys depended on the hardness, microstructure, phases, alloying elements and temperature. The Ni-rich phase, W-rich and Mo-rich solid solutions could sustain external load. Cr 2 WO 6, WO 3 and CoWO 4 had the hard and brittle nature. During sliding, these compounds could more easily

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The formation of sigma phase in the CoCrFeNi high

2021716 · Alloy ingots with nominal composition of Co 0.5 CrFeNi, CoCrFeNi, CoCr 0.5 FeNi, CoCrFe 0.5 Ni were synthesized by melting appropriate mixtures of high-purity (>99.95%) constituent elements at least 4 times in Ar at high temperature in an electric arc furnace to ensure chemical homogeneity. To study the effects of heat treatment,

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GE+ CoCrMo Powder Data Sheet (PDS) - General Electric

202092 · 4. Indicative Values only from literature for alloy within same chemical limits and various manufacturing techniques & Heat treatments (e.g. wrought, casting, MIM, etc) 5. Ref: MIL-STD-889 (Dissimilar Metals), several literature reference (Biomedical & Aerospace applications of CoCr alloys) *NOTES Let’s Build Anything Together

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Origin of the Selective Cr Oxidation in CoCr Alloy Surfaces

2010713 · CoCr alloy surfaces are known to oxidize with the formation of stable Cr2O3 protecting films. However, the inherent mechanisms initiating the selective oxidation of one component, commonly observed in most metal alloys exposed to an oxidizing environment, are still largely unknown. Here we present a study of the early oxidation

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Frontiers | Additive Manufacturing of Co-Cr-Mo

201533 · Co-Cr-Mo alloy samples, fabricated using Laser Engineered Net Shaping – a laser-based additive manufacturing technology, have been subjected to heat treatment to study its influence on microstructure,

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(PDF) An Assessment of Medical Grade Cobalt

201571 · The ASTM F-1537 CoCr alloy is of particular interest for manufacturing orthopaedic implants since it forms a hard passive oxide layer on the surface, which makes it bio-compatible [2]. Cobaltbased ...

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Materials and Coatings for Medical Devices: Cardiovascular

201532 · gasketed test for a duration of ten days, the alloy was observed to degrade at a rate of 0.03 mg/cm 2 /day (Kuhn 1981). Degradation Properties/Mechanisms According to the Summary of Safety and Effectiveness Data for the Multi-Link Vision Stent, the corrosion resistance of the L-605 CoCr alloy tubing used to fabricate the stent is

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Introduction of ASTM CoCrMo Alloy ASTM F75 ...

2019214 · 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 ...

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3D prints & Machined parts from Cobalt

3D Printing with CoCr. Cobalt-based alloys are used for manufacturing tools that are applied for injection molding of plastic parts using 3D printing. The excellent material qualities and high hardness of the material allow

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ASTM F75 CoCr Alloy, ASTM F75 CoCr Alloy, Superalloys

ASTM F75 CoCr Alloy Superalloys Applications and Specifications. ASTM F75 CoCr is a non-magnetic Cobalt Chrome alloy exhibiting high temperature capability, strength, corrosion resistance, wear resistance as well as excellent biocompatibility. CoCr alloys are widely used within the orthopedics, aerospace, power generation and the dental fields.

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Effect of Ni, W and Mo on the microstructure, phases and

202048 · Friction and wear behaviors of CoCr matrix alloys depended on the hardness, microstructure, phases, alloying elements and temperature. The Ni-rich phase, W-rich and Mo-rich solid solutions could sustain external load. Cr 2 WO 6, WO 3 and CoWO 4 had the hard and brittle nature. During sliding, these compounds could more easily

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A three-dimensional finite element analysis of mechanical

2019927 · The maximum von Mises stress of the PDL of CoCr alloy, Ti alloy, PEEK groups were 0.17 ± 0.01 MPa, 0.15 ± 0.02 MPa, 0.12 ± 0.01 MPa respectively (mean ± SD), indicating significant difference ...

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Surface Modification of CoCr Alloy Using Varying

20141210 · CoCr alloy is commonly used in various cardiovascular medical devices for its excellent physical and mechanical properties. However, the formation of blood clots on the alloy surfaces is a serious concern. This research is focused on the surface modification of CoCr alloy using varying concentrations (1, 25, 50, 75, and 100 mM) of phosphoric

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Cobalt chromium alloy with immobilized BMP peptide for

2011328 · Musculoskeletal disorders are a leading cause of long‐term disability and affect hundreds of millions of people worldwide. 1 A key challenge of biomedical engineering is to accelerate remodeling and integration of implants in the body. Most metallic orthopedic implants are made from a mixture of alloys. 2 Cobalt chromium (CoCr) is one of the most

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Frontiers | Additive Manufacturing of Co-Cr-Mo

201533 · Co-Cr-Mo alloy samples, fabricated using Laser Engineered Net Shaping – a laser-based additive manufacturing technology, have been subjected to heat treatment to study its influence on microstructure,

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Surface modification of CoCr alloys by electrochemical

between PAP–CoCr disks and PMMA was measured using a tensile test machine (H25K-S, Tinius Olsen Testing Machine Co., Inc Willow Grove, PA) set up at a constant speed of 10 mm min 1. The specimens were loaded in the machine as Fig. 1 (A) Potentiodynamic curve of CoCr alloy in HCl (0.5 M). The pictures show the visual appearance of CoCr 0.5 V, CoCr

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Introduction of ASTM CoCrMo Alloy ASTM F75 ...

2019214 · 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 ...

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2018329 · Technology Research and Development :。. 280 V ,; Program of Tangshan 280 V ,。. 280 V , 679.94±46.87 MPa ...

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ASTM F75 CoCr Alloy, ASTM F75 CoCr Alloy, Superalloys

ASTM F75 CoCr Alloy Superalloys Applications and Specifications. ASTM F75 CoCr is a non-magnetic Cobalt Chrome alloy exhibiting high temperature capability, strength, corrosion resistance, wear resistance as well as excellent biocompatibility. CoCr alloys are widely used within the orthopedics, aerospace, power generation and the dental fields.

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Osseointegration of 3D printed microalloyed CoCr

2018210 · Incorporation of as little as 0.04% Zr into the CoCr alloy can significantly improve the biomechanical anchorage of constructs fabricated by EBM. Here we investigate bone material properties, including microstructure and composition, adjacent to 3D printed CoCr implants with and without addition of 0.04% Zr, after 8 weeks of healing in the ...

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A three-dimensional finite element analysis of mechanical

2019927 · The maximum von Mises stress of the PDL of CoCr alloy, Ti alloy, PEEK groups were 0.17 ± 0.01 MPa, 0.15 ± 0.02 MPa, 0.12 ± 0.01 MPa respectively (mean ± SD), indicating significant difference ...

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Comparative analysis of titanium coating on cobalt

20201126 · Titanium surface coating on cobalt-chromium (CoCr) alloy has characteristics desirable for an orthopedic implant as follows: strength, osteointegrative capability, and biocompatibility. Creating such a coated surface takes a challenging process and two dissimilar metals are not easily welded. In our study, we utilized additive

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Cobalt chromium alloy with immobilized BMP peptide for

2011328 · Musculoskeletal disorders are a leading cause of long‐term disability and affect hundreds of millions of people worldwide. 1 A key challenge of biomedical engineering is to accelerate remodeling and integration of implants in the body. Most metallic orthopedic implants are made from a mixture of alloys. 2 Cobalt chromium (CoCr) is one of the most

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Osseointegration of 3D printed microalloyed CoCr

2018210 · Incorporation of as little as 0.04% Zr into the CoCr alloy can significantly improve the biomechanical anchorage of constructs fabricated by EBM. Here we investigate bone material properties, including microstructure and composition, adjacent to 3D printed CoCr implants with and without addition of 0.04% Zr, after 8 weeks of healing in the ...

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[PDF]

Surface modification of CoCr alloys by electrochemical

between PAP–CoCr disks and PMMA was measured using a tensile test machine (H25K-S, Tinius Olsen Testing Machine Co., Inc Willow Grove, PA) set up at a constant speed of 10 mm min 1. The specimens were loaded in the machine as Fig. 1 (A) Potentiodynamic curve of CoCr alloy in HCl (0.5 M). The pictures show the visual appearance of CoCr 0.5 V, CoCr

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Cobalt-Chrome, ASTM F75 - Arcam - PDF Catalogs

ISSUED NOVEMBER 2007. ASTM F 75 CoCr Alloy General characteristics Cobalt-based alloys have been used in demanding applications for as long as investment casting has been available as an industrial process. Arcam’s Electron Beam Melting technology competes directly with investment casting and is a viable choice for manufacturing complex parts ...

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Machinability of Cobalt-based and Cobalt Chromium

2020513 · Cobalt chrome molybdenum alloy is considered as one of the advanced materials which is widely gaining popularity in various engineering and medical applications. ... According to American Standards for Testing and Materials (ASTM), there are four types of CoCr alloys which are recommended for surgical implant applications, they are: (1)

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Material Data Sheet - SLM Solutions

2020106 · Co-Alloy CoCr28Mo6 / 2.4979 / F75[1] The properties and mechanical characteristics apply to powder that is tested and sold by SLM Solutions, and that has been processed on SLM Solutions machines using the original SLM Solutions parameters in compliance with the applicable operating instructions

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ASTM F75 CoCr Alloy - Superalloys, High temperature

ASTM ASTM F75 CoCr Alloy Details. ASTM F75 CoCr is a non-magnetic Cobalt Chrome alloy exhibiting high temperature capability, strength, corrosion resistance, wear resistance as well as excellent biocompatibility. CoCr alloys are widely used within the orthopedics, aerospace, power generation and the dental fields.

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Co-Cr Alloys as Effective Metallic Biomaterials

20161021 · 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

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