The Effect of Cooling Rate on the Microstructure and Hardness of As-Cast Co-28Cr-6Mo Alloy Used as Biomedical Knee Implant

Silva, Douglas Júnior da; Contieri, Rodrigo José; Cremasco, Alessandra; Floriano, Ricardo

doi:10.1007/s40962-021-00749-7

Cited by 9 publications

(3 citation statements)

References 17 publications

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“…Therefore, the current solution treatments exceeding 1,000 °C induce a phase transition from ε-Co to γ-Co in the castings. It is worth mentioning that the volume fraction of precipitated phases shown in Table 1 is relatively small, which is below the detection limit of the XRD equipment [34] . Consequently, the diffraction peak of precipitated phases could not be clearly observed.…”

Section: Effect Of Current Solution Treatment Temperature On Microstr...mentioning

confidence: 89%

Microstructure and mechanical properties of Co-28Cr-6Mo-0.22C investment castings by current solution treatment

Dan,

Liu,

Zhang

et al. 2024

China Foundry

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Section: Effect Of Current Solution Treatment Temperature On Microstr...mentioning

confidence: 89%

Microstructure and mechanical properties of Co-28Cr-6Mo-0.22C investment castings by current solution treatment

Dan,

Liu,

Zhang

et al. 2024

China Foundry

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“…Cobalt-chromium-molybdenum alloy has high hardness, excellent wear resistance, good biocompatibility and outstanding corrosion resistance. It has a wide range of applications in the biomedical eld and is commonly used for oral dentures and joint implants [1][2][3][4][5]. However, this alloy suffers from poor machinability and high processing costs.…”

Section: Introductionmentioning

confidence: 99%

Electrolyte component preference and surface integrity impact analysis for electrolytic plasma polishing of cobalt-chromium-molybdenum alloys

Liu¹,

Zhang³

2023

Preprint

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Cobalt-chromium-molybdenum alloys is an excellent cobalt-based alloy material used in the manufacturing of medical metal parts, which often requires a high-quality surface finish. In this paper, electrolytic plasma polishing (EPP) technology is applied to the surface treatment of cobalt-chromium-molybdenum alloy. Experiments are conducted to preference the additive components in the electrolyte to improve the surface quality after processing, and the effects of different types of complexing agents on the surface processing effect are investigated. The best polishing effect is obtained by mixing the electrolyte with ammonium sulfate and EDTA at a mass fraction of 4:1, resulting in the lowest surface roughness value of 0.0134µm and a high material removal rate of 4.935µm/min. Simultaneously, the addition of complexing agents further improves the wetting properties of the material surface. Polishing experiments are continued using the optimized electrolyte, and the surface integrity of the cobalt-chromium-molybdenum alloy is analyzed. The experimental results show that EPP can achieve a smooth and flat surface, and the surface profile curve after processing is stable and consistent. Additionally, the surface organization of the material changes, the surface layer hardness decreases and a more corrosion-resistant surface is obtained.

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“…No componente tibial as concentrações de Cr e N ficaram próximas ao limite superior da especificação enquanto que as concentrações do C e Mo encontram-se em regiões intermediárias da faixa de especificação. menor fração e tamanho de carbonetos[SILVA et al, 2022]. No estudo realizado por VALER[2014] foi observado para a liga Co-28Cr-6Mo no estado bruto de solidificação tamanho médio de carbonetos na faixa de 25 µm a 200 µm, os quais…”

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Propriedades mecânicas, resistência à corrosão e biocompatibilidade da liga Co-28Cr-6Mo ASTM F75 utilizada em implantes de joelho

Júnior da Silva

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The Effect of Cooling Rate on the Microstructure and Hardness of As-Cast Co-28Cr-6Mo Alloy Used as Biomedical Knee Implant

Cited by 9 publications

References 17 publications

Microstructure and mechanical properties of Co-28Cr-6Mo-0.22C investment castings by current solution treatment

Microstructure and mechanical properties of Co-28Cr-6Mo-0.22C investment castings by current solution treatment

Electrolyte component preference and surface integrity impact analysis for electrolytic plasma polishing of cobalt-chromium-molybdenum alloys

Propriedades mecânicas, resistência à corrosão e biocompatibilidade da liga Co-28Cr-6Mo ASTM F75 utilizada em implantes de joelho

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