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. 2024 Aug 23;17(17):4173.
doi: 10.3390/ma17174173.

Influence of Noble Metals on Morphology and Topology of Structural Elements in Magnesium Alloy

Viktor L Greshta  1 , Vadim A Shalomeev  1 , Oleksandr S Lukianenko  1 , Rafał Bogucki  2 , Kinga Korniejenko  2 , Serhii S Tabunshchyk  1
Affiliations

Influence of Noble Metals on Morphology and Topology of Structural Elements in Magnesium Alloy

Viktor L Greshta et al. Materials (Basel). .

Abstract

The main motivation for this study was to improve implant materials. The influence of silver and gold on the structure and mechanical properties of Mg-Nd-Zr alloy was studied. In the work, quantitative and qualitative evaluation of the structural components of magnesium alloy with noble metal additives was performed. The research methods used were investigation of the mechanical properties and observation of micro- and macrostructures. The results showed that modification of magnesium alloy with Ag and Au contributes to the formation of spherical intermetallics of smaller size groups, which become additional centers of crystallization and grind the cast structure. The best composition from additional alloying with silver and gold was determined. Their positive effect on the strength and ductility properties of the metal was established. Preclinical and clinical testing was performed and the prospects for noble metal modification of bioabsorbable magnesium alloy for implant production usage were shown.

Keywords: implant; intermetallics; magnesium alloy; mechanical properties; microstructure; noble metals.

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Conflict of interest statement

The authors declare no conflicts of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript; or in the decision to publish the results.

Figures

Figure 1
Figure 1
Macro- ((a) ×5) and microstructure ((b), ×100) of bone tissue samples after mechanical tests.
Figure 2
Figure 2
Microstructure of NZ30K alloy (×100): (a) initial; (b) 0.1% Au; (c) 0.1% Ag.
Figure 3
Figure 3
Topology of intermetallics of the NZ30K alloy (lamellar (a) and spherical (b) particles of intermetallic phases).
Figure 4
Figure 4
Effect of Ag and Au content on the volume percentage (V) of intermetallics in NZ30K alloy.
Figure 5
Figure 5
Effect of the volume percentage of intermetallics (V) on micrograin size (dsrp) in the NZ30K alloy.
Figure 6
Figure 6
Influence of the volume percentage of intermetallics (V) on the properties of NZ30K alloy: (a) Ag; (b) Au.
See this image and copyright information in PMC

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