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Fabrication and Characterization Analysis of Biodegradable Magnesium and Zinc-Based Alloys...
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Special Issue "Fabrication and Characterization Analysis of Biodegradable Magnesium and Zinc-Based Alloys Developed as New Biomedical Materials"

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

Deadline for manuscript submissions: closed (15 April 2023) | Viewed by 2241

Special Issue Editor

Prof. Dr. Debao Liu

E-Mail Website
Guest Editor
School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China
Interests: biodegradable metallic materials; magnesium alloys and Mg-based composites; zinc alloys and Zn-based composites; fabrication; characterization analysis; in vitro performances; in vivo performances

Special Issue Information

Dear Colleagues,

In recent years, much progress has been made on the development of biodegradable magnesium and zinc alloys as implants in cardiovascular and orthopedic applications. This Special Issue focuses on the following topics: (i) the design, fabrication and characterization analysis of biodegradable magnesium and zinc alloys materials (ii) in vitro and in vivo performances of developed magnesium and zinc alloys materials.

Prof. Dr. Debao Liu
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • biodegradable metallic materials
  • magnesium alloys
  • zinc alloys
  • fabrication
  • characterization analysis
  • in vitro performances

Published Papers (2 papers)

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Article
Microstructure, Mechanical Performance and Anti-Bacterial Activity of Degradable Zn-Cu-Ag Alloy
by
Tongxin Di
,
Ying Xu
,
Debao Liu
and
Xiaohao Sun
Metals 2022, 12(9), 1444; https://doi.org/10.3390/met12091444 - 30 Aug 2022
Cited by 3 | Viewed by 790
Abstract
Zn-based materials have attracted increasing attention in the biodegradable materials field due to their unique combination of suitable biodegradability and good biological functionalities. However, the currently existing Zn alloys exhibited poor mechanical reliability and insufficient anti-bacterial activity. In this study, the microstructure, mechanical [...] Read more.
Zn-based materials have attracted increasing attention in the biodegradable materials field due to their unique combination of suitable biodegradability and good biological functionalities. However, the currently existing Zn alloys exhibited poor mechanical reliability and insufficient anti-bacterial activity. In this study, the microstructure, mechanical properties, corrosion behavior and antibacterial properties of Zn-1Cu-0.5Ag and Zn-1Cu-1Ag alloys were investigated. The average grain size of the alloys decreased from 1.91 μm in the Zn-1Cu-0.5Ag alloy to 1.64 μm in the Zn-1Cu-1Ag alloy with the increasing Ag concentration. Due to the grain refinement effect, Zn-1Cu-1Ag exhibited higher ductility (elongation of 36.0%) compared with its Zn-1Cu-0.5Ag counterparts (elongation of 26.3%). In the meantime, the Zn-1Cu-1Ag alloy possessed the ultimate tensile strength (UTS) of 292.04 MPa, the yield strength (YS) of 269.49 MPa, and the Vickers hardness value of 96.9. The anti-bacterial properties of the material were evaluated by the inhibition zone test. The addition of Cu and Ag endowed strong anti-bacterial activity to staphylococcus aureus (S. aureus) and escherichia coli (E. coli) with the zinc matrix. The Zn-1Cu-1Ag alloy exhibited improved mechanical properties, a moderate degradation rate of 0.0484 mm/y, acceptable cytocompatibility, and efficient anti-bacterial properties which should be useful for orthopedic applications. Full article
(This article belongs to the Special Issue Fabrication and Characterization Analysis of Biodegradable Magnesium and Zinc-Based Alloys Developed as New Biomedical Materials)
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Article
Microstructure Evolution and Properties of β-TCP/Mg-Zn-Ca Biocomposite Processed by Hot Extrusion Combined with Multi-Pass ECAP
by
Xiaohao Sun
,
Yue Su
,
Yan Huang
,
Minfang Chen
and
Debao Liu
Metals 2022, 12(4), 685; https://doi.org/10.3390/met12040685 - 16 Apr 2022
Cited by 2 | Viewed by 979
Abstract
To further improve the comprehensive performance of Mg-based alloy, hot extrusion combined with multi-pass equal channel angular pressing (ECAP) was applied to process Mg-3 wt%Zn-0.2 wt%Ca alloy and 1 wt%β-TCP/Mg-3 wt%Zn-0.2 wt%Ca biocomposites. The microstructure evolution, mechanical properties, corrosion behavior, and cell biocompatibility [...] Read more.
To further improve the comprehensive performance of Mg-based alloy, hot extrusion combined with multi-pass equal channel angular pressing (ECAP) was applied to process Mg-3 wt%Zn-0.2 wt%Ca alloy and 1 wt%β-TCP/Mg-3 wt%Zn-0.2 wt%Ca biocomposites. The microstructure evolution, mechanical properties, corrosion behavior, and cell biocompatibility of the experimental specimens were systematically investigated. The average grain size of 13.4 ± 0.6 μm in MgZnCa alloy and 9.6 ± 0.3 μm in composites materials can be achieved by six ECAP passes. The uniaxial compressive strength (UCS) of 388.4 ± 7.3 MPa and the strain at failure of 14.3 ± 1.5% were confirmed in MgZnCa alloy, while the UCS of 405.3 ± 7.4 MPa and the strain at failure of 9.8 ± 1.9% were achieved by the addition of β-TCP after six ECAP passes. In spite of different compositions, the minimum corrosion rate of 0.895 mm·Y−1 and 1.117 mm·Y−1 can be achieved by two ECAP passes at 593 K. The cytocompatibility evaluation revealed that the experimental materials processed by six ECAP passes had no significant cytotoxicity to L929 cells, and the addition of β-TCP improved the cytocompatibility. Full article
(This article belongs to the Special Issue Fabrication and Characterization Analysis of Biodegradable Magnesium and Zinc-Based Alloys Developed as New Biomedical Materials)
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