Surface modification of Co-Cr-Mo alloys by electron-beam treatment

Valkov, Stefan; Parshorov, Stoyan; Andreeva, A.; Nikolova, Maria P.; Petrov, P.

doi:10.1088/1757-899x/1056/1/012008

Cited by 3 publications

(1 citation statement)

References 18 publications

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“…PCN and low-temperature PN successfully increased the corrosion-wear resistance of the Co-Cr alloy. Additionally, in his study, Valkov et al [59] explored the prospect of employing the electron-beam surface engineering approach to change the composition and characteristics of Co-Cr-Mo alloys. The technical variables were adjusted to achieve the fastest cooling rate possible without scorching the surface.…”

Section: Co-cr Alloysmentioning

confidence: 99%

Recent Advancements in Surface Modification, Characterization and Functionalization for Enhancing the Biocompatibility and Corrosion Resistance of Biomedical Implants

Thakur

Kumar²,

Kaya

et al. 2022

Coatings

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Metallic materials are among the most crucial engineering materials widely utilized as biomaterials owing to their significant thermal conductivity, mechanical characteristics, and biocompatibility. Although these metallic biomedical implants, such as stainless steel, gold, silver, dental amalgams, Co-Cr, and Ti alloys, are generally used for bone tissue regeneration and repairing bodily tissue, the need for innovative technologies is required owing to the sensitivity of medical applications and to avoid any potential harmful reactions, thereby improving the implant to bone integration and prohibiting infection lea by corrosion and excessive stress. Taking this into consideration, several research and developments in biomaterial surface modification are geared toward resolving these issues in bone-related medical therapies/implants offering a substantial influence on cell adherence, increasing the longevity of the implant and rejuvenation along with the expansion in cell and molecular biology expertise. The primary objective of this review is to reaffirm the significance of surface modification of biomedical implants by enlightening numerous significant physical surface modifications, including ultrasonic nanocrystal surface modification, thermal spraying, ion implantation, glow discharge plasma, electrophoretic deposition, and physical vapor deposition. Furthermore, we also focused on the characteristics of some commonly used biomedical alloys, such as stainless steel, Co-Cr, and Ti alloys.

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Section: Co-cr Alloysmentioning

confidence: 99%

Recent Advancements in Surface Modification, Characterization and Functionalization for Enhancing the Biocompatibility and Corrosion Resistance of Biomedical Implants

Thakur

Kumar²,

Kaya

et al. 2022

Coatings

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Influence of beam power on the surface architecture and corrosion behavior of electron-beam treated Co-Cr-Mo alloys

Valkov

Parshorov

Andreeva

et al. 2021

Nuclear Instruments and Methods in Physics Research Section B:

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Enhancing the Tribological Properties of Bearing Surfaces in Hip Arthroplasty by Shot-Peening the Metal Surface

Jarungvittayakon,

Khantachawana,

Sa-ngasoongsong

2024

Lubricants

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Total hip arthroplasty (THA) is a surgical procedure for patients with pain and difficulty walking due to hip osteoarthritis. In primary THA, the acetabulum and femoral head are replaced by a prosthesis where the modular femoral head and inner liner of the acetabulum form the bearing surface. The most popular bearing surface used in the United States, metal-on-polyethylene, consists of a cobalt–chromium molybdenum (CoCrMo) alloy femoral head that articulates with a polyethylene acetabular liner, typically made of highly cross-linked polyethylene. While successful in most cases, THA sometimes fails, commonly from aseptic loosening due to the wear debris of polyethylene. Fine-particle shot peening (FPSP) is a simple method for enhancing the mechanical properties and surface properties of metal, including reducing friction and enhancing the lubrication properties of the metal surface. In this study, we applied FPSP to the CoCr in the femoral head of a hip prosthesis to improve its surface properties and conducted experiments with pin-on-disc tribometers using CoCr as a pin and highly cross-linked polyethylene as a disc to mimic the THA implant. The results show that FPSP significantly enhances the tribological properties of the CoCr surface, including lubrication; decreases the friction coefficient; and decreases the polyethylene wear volume.

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Surface modification of Co-Cr-Mo alloys by electron-beam treatment

Cited by 3 publications

References 18 publications

Recent Advancements in Surface Modification, Characterization and Functionalization for Enhancing the Biocompatibility and Corrosion Resistance of Biomedical Implants

Recent Advancements in Surface Modification, Characterization and Functionalization for Enhancing the Biocompatibility and Corrosion Resistance of Biomedical Implants

Influence of beam power on the surface architecture and corrosion behavior of electron-beam treated Co-Cr-Mo alloys

Enhancing the Tribological Properties of Bearing Surfaces in Hip Arthroplasty by Shot-Peening the Metal Surface

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