Corrosion of bio implants

Kamachimudali, U.; Sridhar, T. M.; Raj, Baldev

doi:10.1007/bf02706450

Cited by 268 publications

(125 citation statements)

References 49 publications

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“…The metal based biomaterials are often used for load bearing such as bolt, plate, connection, or knee joints, the stalk of the femur and others [5,6]. There are three types of metal alloys which are often used for orthopedic devices: stainless steel, titanium and its alloys, and cobalt-chromium-based alloy.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Behavior of Plasma Nitrided SS316L Biomaterial

Kartikasari¹,

Sutrisna²,

Aziz³

2017

Open Materials Sci. J.

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Abstract:Objective:This research aims to determine corrosion behavior of SS316L biomaterial metals after plasma nitriding process. Methods:The plasma nitriding process on the surface of SS316L was performed at 350oC, 400oC, 450oC, 500oC, 550oC and 1.8 mbar nitrogen gas pressure for 3 hours. The surface Nitrogen concentration level distribution from the surface was examined using Energy Dispersive X-ray Spectroscopy, the phases formed after nitriding process were determined using X-ray Diffraction. The corrosion resistance was investigated using three-electrode cell polarization method. Result:The results showed that the percentage of nitrogen concentration atoms on the surface of the SS316L after plasma nitriding process was in range of 7.61-21.73%, in which the highest number 21.73% occurred at 500oC. Metal nitride formed on the surface of SS316L for all temperature variations are Fe4N, CrN and β-Cr2N phases were formed after nitriding process. Optimum corrosion resistance (8.21 x 10-4 mm/yr) occurs at 350oC.

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Section: Introductionmentioning

confidence: 99%

Corrosion Behavior of Plasma Nitrided SS316L Biomaterial

Kartikasari¹,

Sutrisna²,

Aziz³

2017

Open Materials Sci. J.

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“…This may lead to the repairing or replacing parts of human body. The replacement should fit perfectly, act as the integral part of the body, have long lifetime, be bio-compatible, corrosion resistant and should not be expensive [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Titanium-Niobium Alloys on the Growth of the Oxide Layer

Krčil

Mára

Sobotová

et al. 2017

APP

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Abstract. This paper discusses issues of growth of a thin oxide layer formed on the surface of titanium alloys. The oxide layer on the surface introduces a corrosion resistance and a bio-compatibility, both of which are required for medical applications. The oxide layer is a result of a spontaneous passivation, but for the practical applications it is necessary to control the growth of oxides. In present work, the oxide layer was formed on the CP Ti grade 2, Ti39Nb alloy and CP Ti grade 2 with Ti39Nb PVD coating of two different thicknesses by a thermal oxidation at 600• C for 8 hours. After the oxidation process the oxide layer was observed by SEM.

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“…Bioactivity behavior is a specific biological response between implants and human body, which results in the formation of a bond between tissue and implant materials [2]. Metallic materials play a very predominant role in fulfilling almost every difficult factor that arises in implant applications [3]. In dental applications, biomaterials can be fabricated by stainless steels, Co-Cr-Mo alloys, Ti and Ti alloys, bio-glass and polymeric materials.…”

Section: Introductionmentioning

confidence: 99%

MICROSTRUCTURE AND IN-VITRO TEST BIOACTIVITY BEHAVIOR OF Co-Cr-Mo (F-75)/HYDROXYAPATITE IN PHOSPHATE BUFFERED SALINE SOLUTION

Jamaludin

Adzali

Derman³

et al. 2014

Acta Metall Slovaca

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Cobalt based alloys were the first metallic materials successfully used in orthopedic applications. However, these alloys are bio-inert, it is necessary to make them bioactive in the human body to improve their application as biomaterials. This research reported the microstructure and in-vitro bioactivity behavior of the novel Co-Cr-Mo alloy (ASTM F-75) filled with different amounts of hydroxyapatite (HAP). F-75 powder was mixed with 2, 6 and 10 wt. % of HAP before being cold compacted at 550 MPa using a uni-axial press machine. The composites then were sintered at 1100°C for 2 h. In-vitro bioactivity behavior of the composites was evaluated by immersing the composites into simulated body fluids for up to 18 days. Results showed that the nucleus of apatite, identified as the apatite layer formed on the surface of the prepared F-75/HAP composite after 18 days of immersion in the phosphate buffered solution (PBS). The Co-Cr-Mo alloy was successfully converted into a bioactive composite by adding 2, 6 and 10 wt. % of HAP particles. It was proposed that the formation of the apatite layer on the surface of F-75/HAP can contribute to the improved biocompatibility and osteoconductivity of F-75/HAP.

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Corrosion of bio implants

Cited by 268 publications

References 49 publications

Corrosion Behavior of Plasma Nitrided SS316L Biomaterial

Corrosion Behavior of Plasma Nitrided SS316L Biomaterial

The Influence of Titanium-Niobium Alloys on the Growth of the Oxide Layer

MICROSTRUCTURE AND IN-VITRO TEST BIOACTIVITY BEHAVIOR OF Co-Cr-Mo (F-75)/HYDROXYAPATITE IN PHOSPHATE BUFFERED SALINE SOLUTION

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