Characteristics of Mg-Based Sintered Alloy with Au Addition
The magnesium-based alloys produced by mechanical alloying (MA) are characterized by specific porosity, fine-grained structure, and isotropic properties. In addition, alloys containing magnesium, zinc, calcium, and the noble element gold are biocompatible, so they can be used for biomedical implants...
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MDPI AG
2023-02-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/5/1915 |
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| author | Sabina Lesz Małgorzata Karolus Adrian Gabryś Bartłomiej Hrapkowicz Witold Walke Wojciech Pakieła Klaudiusz Gołombek Julia Popis Peter Palček |
| author_facet | Sabina Lesz Małgorzata Karolus Adrian Gabryś Bartłomiej Hrapkowicz Witold Walke Wojciech Pakieła Klaudiusz Gołombek Julia Popis Peter Palček |
| author_sort | Sabina Lesz |
| collection | DOAJ |
| description | The magnesium-based alloys produced by mechanical alloying (MA) are characterized by specific porosity, fine-grained structure, and isotropic properties. In addition, alloys containing magnesium, zinc, calcium, and the noble element gold are biocompatible, so they can be used for biomedical implants. The paper assesses selected mechanical properties and the structure of the Mg<sub>63</sub>Zn<sub>30</sub>Ca<sub>4</sub>Au<sub>3</sub> as a potential biodegradable biomaterial. The alloy was produced by mechanical synthesis with a milling time of 13 h, and sintered via spark-plasma sintering (SPS) carried out at a temperature of 350 °C and a compaction pressure of 50 MPa, with a holding time of 4 min and a heating rate of 50 °C∙min<sup>−1</sup> to 300 °C and 25 °C∙min<sup>−1</sup> from 300 to 350 °C. The article presents the results of the X-ray diffraction (XRD) method, density, scanning electron microscopy (SEM), particle size distributions, and Vickers microhardness and electrochemical properties via electrochemical impedance spectroscopy (EIS) and potentiodynamic immersion testing. The obtained results reveal the compressive strength of 216 MPa and Young’s modulus of 2530 MPa. The structure comprises MgZn<sub>2</sub> and Mg<sub>3</sub>Au phases formed during the mechanical synthesis, and Mg<sub>7</sub>Zn<sub>3</sub> that has been formed during the sintering process. Although MgZn<sub>2</sub> and Mg<sub>7</sub>Zn<sub>3</sub> improve the corrosion resistance of the Mg-based alloys, it has been revealed that the double layer formed because of contact with the Ringer’s solution is not an effective barrier; hence, more data and optimization are necessary. |
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| id | doaj.art-003cc1adc1fe4dd98e8210b5448a079a |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T07:19:12Z |
| publishDate | 2023-02-01 |
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| spelling | doaj.art-003cc1adc1fe4dd98e8210b5448a079a2023-11-17T08:04:41ZengMDPI AGMaterials1996-19442023-02-01165191510.3390/ma16051915Characteristics of Mg-Based Sintered Alloy with Au AdditionSabina Lesz0Małgorzata Karolus1Adrian Gabryś2Bartłomiej Hrapkowicz3Witold Walke4Wojciech Pakieła5Klaudiusz Gołombek6Julia Popis7Peter Palček8Department of Engineering Materials and Biomaterials, Silesian University of Technology, 18a Konarskiego Street, 44-100 Gliwice, PolandInstitute of Materials Engineering, University of Silesia, 1a 75 Pulku Piechoty Street, 41-500 Chorzow, PolandDepartment of Engineering Materials and Biomaterials, Silesian University of Technology, 18a Konarskiego Street, 44-100 Gliwice, PolandDepartment of Engineering Materials and Biomaterials, Silesian University of Technology, 18a Konarskiego Street, 44-100 Gliwice, PolandDepartment of Biomaterials and Medical Device Engineering, Silesian University of Technology, Roosevelta 40 Street, 41-800 Zabrze, PolandDepartment of Engineering Materials and Biomaterials, Silesian University of Technology, 18a Konarskiego Street, 44-100 Gliwice, PolandMaterials Research Laboratory, Silesian University of Technology, 18a Konarskiego Street, 44-100 Gliwice, PolandDepartment of Engineering Materials and Biomaterials, Silesian University of Technology, 18a Konarskiego Street, 44-100 Gliwice, PolandDepartment of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Veľký Diel, SK-010 26 Žilina, SlovakiaThe magnesium-based alloys produced by mechanical alloying (MA) are characterized by specific porosity, fine-grained structure, and isotropic properties. In addition, alloys containing magnesium, zinc, calcium, and the noble element gold are biocompatible, so they can be used for biomedical implants. The paper assesses selected mechanical properties and the structure of the Mg<sub>63</sub>Zn<sub>30</sub>Ca<sub>4</sub>Au<sub>3</sub> as a potential biodegradable biomaterial. The alloy was produced by mechanical synthesis with a milling time of 13 h, and sintered via spark-plasma sintering (SPS) carried out at a temperature of 350 °C and a compaction pressure of 50 MPa, with a holding time of 4 min and a heating rate of 50 °C∙min<sup>−1</sup> to 300 °C and 25 °C∙min<sup>−1</sup> from 300 to 350 °C. The article presents the results of the X-ray diffraction (XRD) method, density, scanning electron microscopy (SEM), particle size distributions, and Vickers microhardness and electrochemical properties via electrochemical impedance spectroscopy (EIS) and potentiodynamic immersion testing. The obtained results reveal the compressive strength of 216 MPa and Young’s modulus of 2530 MPa. The structure comprises MgZn<sub>2</sub> and Mg<sub>3</sub>Au phases formed during the mechanical synthesis, and Mg<sub>7</sub>Zn<sub>3</sub> that has been formed during the sintering process. Although MgZn<sub>2</sub> and Mg<sub>7</sub>Zn<sub>3</sub> improve the corrosion resistance of the Mg-based alloys, it has been revealed that the double layer formed because of contact with the Ringer’s solution is not an effective barrier; hence, more data and optimization are necessary.https://www.mdpi.com/1996-1944/16/5/1915magnesium alloysmechanical alloyingspark plasma sintering |
| spellingShingle | Sabina Lesz Małgorzata Karolus Adrian Gabryś Bartłomiej Hrapkowicz Witold Walke Wojciech Pakieła Klaudiusz Gołombek Julia Popis Peter Palček Characteristics of Mg-Based Sintered Alloy with Au Addition Materials magnesium alloys mechanical alloying spark plasma sintering |
| title | Characteristics of Mg-Based Sintered Alloy with Au Addition |
| title_full | Characteristics of Mg-Based Sintered Alloy with Au Addition |
| title_fullStr | Characteristics of Mg-Based Sintered Alloy with Au Addition |
| title_full_unstemmed | Characteristics of Mg-Based Sintered Alloy with Au Addition |
| title_short | Characteristics of Mg-Based Sintered Alloy with Au Addition |
| title_sort | characteristics of mg based sintered alloy with au addition |
| topic | magnesium alloys mechanical alloying spark plasma sintering |
| url | https://www.mdpi.com/1996-1944/16/5/1915 |
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