Selection of metals for biomedical devices

Okazaki, Yoshimitsu

doi:10.1016/b978-0-08-102666-3.00002-x

Cited by 6 publications

(10 citation statements)

References 100 publications

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“…Simultaneous testing of wear and corrosion in one test system is known as a tribocorrosion test ( currently using various unstandardised design/setup of tribometer ) [ 280 , 287 , 304 ] or biotribology test [ 256 , 327 ], all of which were conducted in a wet-contact environment between the sample and the test system ( tribometer ). To date, most of the reported trials of the anodised titanium tribocorrosion properties have been able to estimate the mechanical stability of the coating as a whole once it has been in contact with the bodily fluids [ 256 , 280 , 287 , 304 , 327 ]. Despite the limited literature, development of standards and test protocols for testing the tribocorrosion properties of anodic TiO 2 layers is lacking.…”

Section: Current Challenges In Using Tio 2 Anodic Layermentioning

confidence: 99%

Evolution of anodised titanium for implant applications

Alipal

Lee

Koshy

et al. 2021

Heliyon

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Anodised titanium has a long history as a coating structure for implants due to its bioactive and ossified surface, which promotes rapid bone integration. In response to the growing literature on anodised titanium, this article is the first to revisit the evolution of anodised titanium as an implant coating. The review reports the process and mechanisms for the engineering of distinctive anodised titanium structures, the significant factors influencing the mechanisms of its formation, bioactivity, as well as recent pre-and post-surface treatments proposed to improve the performance of anodised titanium. The review then broadens the discussion to include future functional trends of anodised titanium, ranging from the provision of higher surface energy interactions in the design of biocomposite coatings (template stencil interface for mechanical interlock) to techniques for measuring the boneto-implant contact (BIC), each with their own challenges. Overall, this paper provides up-to-date information on the impacts of the structure and function of anodised titanium as an implant coating in vitro and in/ex vivo tests, as well as the four key future challenges that are important for its clinical translations, namely (i) techniques to enhance the mechanical stability and (ii) testing techniques to measure the mechanical stability of anodised titanium, (iii) real-time/in-situ detection methods for surface reactions, and (iv) cost-effectiveness for anodised titanium and its safety as a bone implant coating.

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Section: Current Challenges In Using Tio 2 Anodic Layermentioning

confidence: 99%

Evolution of anodised titanium for implant applications

Alipal

Lee

Koshy

et al. 2021

Heliyon

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“…Metallic biomaterials account for more than 70% of existing biomaterials and medical devices [7], [8]. Metallic biomaterials as researchers prefer implant materials due to their superior mechanical properties in longterm implantation applications [9], [10].…”

Section: Introductionmentioning

confidence: 99%

Effects of Porosity and Boron Reinforcement in AISI 316L Stainless Steel for Biomedical Applications

Aksakal,

Aslan,

Fidan

2024

Fırat Üniversitesi Mühendislik Bilimleri Dergisi

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AISI 316L stainless steel (SS) is one of the most widely used biomaterials in the manufacture of implants and biomaterials. It has advantages over equivalent biomaterials such as low cost, good mechanical properties and biocompatibility. The pores found in porous biomaterials provide mechanical interlock, ensuring strong attachment of the implant to the tissue. In this study, 20%, 30% and 40% by volume of PVA and Boron powder were added into 316L powder to obtain porous SS implant. To investigate the effect of porosity and boron effect on the stainless steel implant material, the samples produced in PVA and Boron added groups, were sintered at 1180 oC under an argon atmosphere. With the evaporation of PVA in the structure, porous and boron added samples were obtained in two groups. Finally, the samples were subjected to Brinell hardness and compression tests and analyzed by SEM, EDS and XRD. As a result of the hardness tests, the highest values were measured as 37.006, 31.32, 25.28 HBS. 39.5, 34.5, 26.2 MPa strengths were measured for 20%, 30% and 40% porous samples respectively.

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“…Among the available classes of biomaterials, metallic materials are extensively used, accounting for over 70% of all implants and medical devices [9][10][11]. The selection of metal as an implant material can be attributed to its superior corrosion resistance and mechanical strength required for better performance in long-term implantation [12,13].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Modified 316L Stainless Steel Alloy for Biomedical Applications Using Powder Metallurgy

et al. 2022

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AISI 316L stainless steel (SS) is one of the extensively used biomaterials to produce implants and medical devices. It provides a low-cost solution with ample mechanical properties, corrosion resistance, and biocompatibility compared to its counterpart materials. However, the implants made of this material are subjected to a short life span in human physiological conditions leading to the leaching of metal ions, thus limiting its use as a biomaterial. In this research, the addition of boron, titanium, and niobium with varying concentrations in the SS matrix has been explored. This paper explores the impact of material composition on modified SS alloy’s physical and mechanical properties. The study’s outcomes specify that the microhardness increases for all the alloy compositions, with a maximum increase of 64.68% for the 2 wt.% niobium added SS alloy. On the other hand, the tensile strength decreased to 297.40 MPa for the alloy containing 0.25 wt.% boron and 2 wt.% titanium additions compared to a tensile strength of 572.50 MPa for pure SS. The compression strength increased from 776 MPa for pure SS to 1408 MPa for the alloy containing niobium and titanium additions in equal concentrations.

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Selection of metals for biomedical devices

Cited by 6 publications

References 100 publications

Evolution of anodised titanium for implant applications

Evolution of anodised titanium for implant applications

Effects of Porosity and Boron Reinforcement in AISI 316L Stainless Steel for Biomedical Applications

Microstructure and Mechanical Properties of Modified 316L Stainless Steel Alloy for Biomedical Applications Using Powder Metallurgy

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