Design of novel Zn-Ag-Zr alloy with enhanced strength as a potential biodegradable implant material

Maria Wątroba; Wiktor Bednarczyk; Jakub Kawałko; Krzysztof Mech; Marianna Marciszko; Gabriela Boelter; Manuel Banzhaf; Piotr Bała

doi:10.1016/j.matdes.2019.108154

Design of novel Zn-Ag-Zr alloy with enhanced strength as a potential biodegradable implant material

Maria Wątroba^*, Wiktor Bednarczyk, Jakub Kawałko, Krzysztof Mech, Marianna Marciszko, Gabriela Boelter, Manuel Banzhaf, Piotr Bała

^*Corresponding author for this work

Biosciences

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Abstract

In this study, a new biodegradable alloy from the Zn-Ag-Zr system was investigated. Most importantly, mechanical properties and ductility were significantly improved in designed Zn1Ag0.05Zr alloy in comparison to binary Zn1Ag and previously investigated Zn0.05Zr alloys (wt%). The characterized alloy reached values of yield strength, ultimate tensile strength and elongation to failure equal to 166 ± 2 MPa, 211 ± 1 MPa and 35 ± 1%, respectively. Simultaneous addition of both alloying elements contributed to solid solution strengthening, intermetallic Zr-rich phase formation, and effective grain refinement. Immersion and electrochemical in vitro corrosion tests showed a slight increase of degradation rate in ternary alloy up to 17.1 ± 1.0 μm/year and no significant loss of mechanical properties after 28-day of immersion in simulated physiological solution. In addition, the preliminary antimicrobial studies show antimicrobial activity of the investigated Zn-Ag-Zr alloy against Escherichia coli and Staphylococcus aureus. The presented results demonstrate that newly developed Zn-based alloy can be considered as a promising biodegradable material for medical applications.

Original language	English
Article number	108154
Number of pages	12
Journal	Materials and Design
Volume	183
Early online date	26 Aug 2019
DOIs	https://doi.org/10.1016/j.matdes.2019.108154
Publication status	Published - 5 Dec 2019

Keywords

Antimicrobial properties
Biodegradable
Corrosion behavior
Mechanical properties
Microstructure
Zn-based alloy

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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Wątroba_et_al_Design_of_novel_Zn_Ag_Zr_alloy_with_enhanced_strength_as_a_potential_biodegradable_implant_material_Materials_and_Design_2019
Checked for eligibility: 06/11/2019
Final published version, 6.47 MBLicence: Creative Commons: Attribution (CC BY)

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abstract = "In this study, a new biodegradable alloy from the Zn-Ag-Zr system was investigated. Most importantly, mechanical properties and ductility were significantly improved in designed Zn1Ag0.05Zr alloy in comparison to binary Zn1Ag and previously investigated Zn0.05Zr alloys (wt%). The characterized alloy reached values of yield strength, ultimate tensile strength and elongation to failure equal to 166 ± 2 MPa, 211 ± 1 MPa and 35 ± 1%, respectively. Simultaneous addition of both alloying elements contributed to solid solution strengthening, intermetallic Zr-rich phase formation, and effective grain refinement. Immersion and electrochemical in vitro corrosion tests showed a slight increase of degradation rate in ternary alloy up to 17.1 ± 1.0 μm/year and no significant loss of mechanical properties after 28-day of immersion in simulated physiological solution. In addition, the preliminary antimicrobial studies show antimicrobial activity of the investigated Zn-Ag-Zr alloy against Escherichia coli and Staphylococcus aureus. The presented results demonstrate that newly developed Zn-based alloy can be considered as a promising biodegradable material for medical applications.",

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AU - Wątroba, Maria

AU - Bednarczyk, Wiktor

AU - Kawałko, Jakub

AU - Mech, Krzysztof

AU - Marciszko, Marianna

AU - Boelter, Gabriela

AU - Banzhaf, Manuel

AU - Bała, Piotr

PY - 2019/12/5

Y1 - 2019/12/5

N2 - In this study, a new biodegradable alloy from the Zn-Ag-Zr system was investigated. Most importantly, mechanical properties and ductility were significantly improved in designed Zn1Ag0.05Zr alloy in comparison to binary Zn1Ag and previously investigated Zn0.05Zr alloys (wt%). The characterized alloy reached values of yield strength, ultimate tensile strength and elongation to failure equal to 166 ± 2 MPa, 211 ± 1 MPa and 35 ± 1%, respectively. Simultaneous addition of both alloying elements contributed to solid solution strengthening, intermetallic Zr-rich phase formation, and effective grain refinement. Immersion and electrochemical in vitro corrosion tests showed a slight increase of degradation rate in ternary alloy up to 17.1 ± 1.0 μm/year and no significant loss of mechanical properties after 28-day of immersion in simulated physiological solution. In addition, the preliminary antimicrobial studies show antimicrobial activity of the investigated Zn-Ag-Zr alloy against Escherichia coli and Staphylococcus aureus. The presented results demonstrate that newly developed Zn-based alloy can be considered as a promising biodegradable material for medical applications.

AB - In this study, a new biodegradable alloy from the Zn-Ag-Zr system was investigated. Most importantly, mechanical properties and ductility were significantly improved in designed Zn1Ag0.05Zr alloy in comparison to binary Zn1Ag and previously investigated Zn0.05Zr alloys (wt%). The characterized alloy reached values of yield strength, ultimate tensile strength and elongation to failure equal to 166 ± 2 MPa, 211 ± 1 MPa and 35 ± 1%, respectively. Simultaneous addition of both alloying elements contributed to solid solution strengthening, intermetallic Zr-rich phase formation, and effective grain refinement. Immersion and electrochemical in vitro corrosion tests showed a slight increase of degradation rate in ternary alloy up to 17.1 ± 1.0 μm/year and no significant loss of mechanical properties after 28-day of immersion in simulated physiological solution. In addition, the preliminary antimicrobial studies show antimicrobial activity of the investigated Zn-Ag-Zr alloy against Escherichia coli and Staphylococcus aureus. The presented results demonstrate that newly developed Zn-based alloy can be considered as a promising biodegradable material for medical applications.

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KW - Microstructure

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Design of novel Zn-Ag-Zr alloy with enhanced strength as a potential biodegradable implant material

Abstract

Keywords

ASJC Scopus subject areas

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