Future Trends in Metallic Biomaterials

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Biobased and Biodegradable Metals".

Deadline for manuscript submissions: closed (1 December 2023) | Viewed by 5859

Special Issue Editors


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Guest Editor
Faculty of Materials Science and Engineering, “Gheorghe Asachi” Technical University of Iasi, 41 “D. Mangeron” Street, 700050 Iasi, Romania
Interests: biomaterials; obtaining and testing new biomaterials; orthopedic implants; medical devices; surface engineering; tissue-implant interact phenomena; materials science
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Special Issue Information

Dear Colleagues,

Metallic biomaterials are generally used for the manufacture of medical devices that require long periods of cuntion and the ability to withstand the mechanical stresses to which they are exposed. Permanent implants based on stainless steel, Co–Cr alloys and titanium or its alloys constitute the main types of metallic biomaterials used in medicine. Worldwide, most implants used for the knee or hip joint, spine, dental area or other medical applications are made of metallic materials. However, it cannot be overlooked that these materials present, in addition to advantages, some limitations. It is well known that the human body is an aggressive environment, meaning metallic biomaterials are exposed to the corrosion process.

In this Special Issue, original research articles and reviews are welcome that focus on material preparation methods, forging or heat treatment, characterization and also interaction of all kind of metallic biomaterials for medical applications. Articles presenting the biofunctionalization of metallic materials, with various methods and surface modification techniques, are also welcome.  

Dr. Mădălina Simona Bălțatu
Prof. Dr. Petricǎ Vizureanu
Guest Editors

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Keywords

  • new biomaterials
  • mettalic biomaterials
  • biocompatibility
  • heat treatments
  • controlled reactions
  • medical applications
  • biofunctionalization

Published Papers (4 papers)

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Research

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24 pages, 14356 KiB  
Article
Improving Corrosion and Stress Corrosion Cracking Performance of Machined Biodegradable Alloy ZX20 by HF-Treatment
by Evgeniy D. Merson, Vitaliy A. Poluyanov, Pavel N. Myagkikh, Alexander S. Bunev, Dmitri L. Merson and Alexei Vinogradov
Metals 2023, 13(10), 1660; https://doi.org/10.3390/met13101660 - 27 Sep 2023
Viewed by 804
Abstract
The treatment with hydrofluoric acid (HF-treatment) was suggested to be an effective way of improving the corrosion resistance of Mg alloys, including Mg-Zn-Ca (ZX) ones used for biodegradable implants. However, the effect of the HF-treatment on the stress corrosion cracking (SCC) susceptibility of [...] Read more.
The treatment with hydrofluoric acid (HF-treatment) was suggested to be an effective way of improving the corrosion resistance of Mg alloys, including Mg-Zn-Ca (ZX) ones used for biodegradable implants. However, the effect of the HF-treatment on the stress corrosion cracking (SCC) susceptibility of ZX alloys has not been reported yet, although this phenomenon can induce premature brittle failures of the metallic medical devices, and thus, it is critical for their in-service structural integrity. In the present study, the effect of the HF-treatment on the microstructure, cytotoxicity, corrosion rate, mechanical properties, and fracture and side surface characteristics of the as-cast ZX20 alloy were investigated with the use of scanning electron microscopy, immersion, and slow-strain rate tensile testing in Hanks’ solution and indirect cell viability tests. It is found that the HF-treatment exerts no cytotoxic effect and results in a significant reduction in corrosion rate (up to 6 times of magnitude) and SCC susceptibility indexes (up to 1.5 times of magnitude). The observed improvement of corrosion and SCC performance of the alloy by the HF-treatment is found to be attributed to three effects, including (i) formation of the protective surface film of MgF2, (ii) removal of surficial contaminations originating from sample preparation procedures, and (iii) dissolution of surficial secondary phase particles. The mechanism of corrosion and SCC in the specimens before and after the HF-treatment are discussed. Full article
(This article belongs to the Special Issue Future Trends in Metallic Biomaterials)
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Review

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20 pages, 2991 KiB  
Review
Influence of Metal Processing on Microstructure and Properties: Implications for Biodegradable Metals—A Mini Review
by Khulud Jaraba and Anil Mahapatro
Metals 2023, 13(10), 1635; https://doi.org/10.3390/met13101635 - 23 Sep 2023
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Abstract
Biodegradable metallic alloys are currently being explored extensively for use in temporary implant applications, since the prolonged existence of implants within the body has been linked with health complications and metal toxicity. There are many metal alloy fabrication methods available in the industrial, [...] Read more.
Biodegradable metallic alloys are currently being explored extensively for use in temporary implant applications, since the prolonged existence of implants within the body has been linked with health complications and metal toxicity. There are many metal alloy fabrication methods available in the industrial, aerospace, and biomedical fields; some of them have more advanced techniques and specialized equipment than others. Past studies have shown that the performances of materials is greatly affected by the concentration of alloying elements and the metal processing techniques used. However, the impact each fabrication method has on the chemical and mechanical properties of the material is not fully understood; this lack of knowledge limits the advancement of the field of biodegradable metals. This review provides a general introduction to biodegradable metals and their applications and then aims to give a broad overview of the influence of metal processing on the microstructure and properties of metal alloys. The possible implications of these fabrication methods for the biodegradable metals are discussed. Full article
(This article belongs to the Special Issue Future Trends in Metallic Biomaterials)
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30 pages, 11713 KiB  
Review
The Potential of Duplex Stainless Steel Processed by Laser Powder Bed Fusion for Biomedical Applications: A Review
by Maria Laura Gatto, Alberto Santoni, Eleonora Santecchia, Stefano Spigarelli, Fabrizio Fiori, Paolo Mengucci and Marcello Cabibbo
Metals 2023, 13(5), 949; https://doi.org/10.3390/met13050949 - 14 May 2023
Cited by 4 | Viewed by 1473
Abstract
The austenitic stainless steels utilized in the production of osteosynthesis devices are susceptible to crevice corrosion. Several studies have compared the corrosive behavior of austenitic and duplex stainless steels (DSS), both of which are recognized as viable biomaterials for tissue engineering applications. All [...] Read more.
The austenitic stainless steels utilized in the production of osteosynthesis devices are susceptible to crevice corrosion. Several studies have compared the corrosive behavior of austenitic and duplex stainless steels (DSS), both of which are recognized as viable biomaterials for tissue engineering applications. All of the in vitro and in vivo studies on animals and clinical results reported to date indicate that austeno-ferritic duplex stainless steel can be recommended as a suitable alternative to ASTM F138 steel, since it is resistant to crevice corrosion in the human body and presents superior mechanical properties. The use of DSS for biomedical applications is still under discussion, mainly due to the lack of knowledge of its behavior in terms of device heating or induced movement when exposed to magnetic fields, a potentially harmful effect for the human body. As a breakthrough production technology, additive manufacturing (AM) has demonstrated significant benefits for the fabrication of metal devices with patient-specific geometry. Laser powder bed fusion has particularly been used to manufacture DSS-based components. A fine control of the processing conditions allows for an understanding of DSS microstructural evolution, which is essential for selecting processing parameters and estimating performance, including mechanical properties and corrosion resistance. Furthermore, scientific investigation is necessary for determining the relationships among material, process, and magnetic properties, in order to establish the underlying principles and critical responses. The purpose of this review is to highlight the key performances of DSS for biomedical applications and to point out the relevant role of advanced processing technologies such as additive manufacturing. Full article
(This article belongs to the Special Issue Future Trends in Metallic Biomaterials)
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28 pages, 6848 KiB  
Review
Modifying Coatings for Medical Implants Made of Titanium Alloys
by Sergey Grigoriev, Catherine Sotova, Alexey Vereschaka, Vladimir Uglov and Nikolai Cherenda
Metals 2023, 13(4), 718; https://doi.org/10.3390/met13040718 - 06 Apr 2023
Cited by 9 | Viewed by 1760
Abstract
This review considered various methods for depositing special modifying coatings on medical implants made of titanium alloys including techniques such as electrochemical deposition, sol–gel process, atmospheric plasma deposition, and PVD methods (magnetron sputtering and vacuum arc deposition). The rationale is provided for the [...] Read more.
This review considered various methods for depositing special modifying coatings on medical implants made of titanium alloys including techniques such as electrochemical deposition, sol–gel process, atmospheric plasma deposition, and PVD methods (magnetron sputtering and vacuum arc deposition). The rationale is provided for the use of modifying coatings to improve the performance efficiency of implants. The concept of a functional multilayer coating designed for products operating in the human body environment is proposed. The advantages and disadvantages of various methods for depositing coatings are considered based on the possibility of their use for obtaining modifying coatings for medical purposes deposited on a titanium alloy base. Full article
(This article belongs to the Special Issue Future Trends in Metallic Biomaterials)
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