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Structure and physical properties of Mg93−xZnxCa7 metallic glasses

DOI: 10.3390/ma16062313 DOI Help

Authors: Stefan Michalik (Diamond Light Source) , Zuzana Molčanová (Institute of Materials Research of SAS, Slovak Academy of Sciences) , Michaela Sulikova (Pavol Jozef Šafárik University in Košice) , Katarína Kušnírová (Institute of Materials Research of SAS, Slovak Academy of Sciences) , Pál Jóvári (Institute for Solid State Physics and Optics (Hungary)) , Jacques Darpentigny (CEA-Saclay) , Karel Saksl (Institute of Materials Research of SAS, Slovak Academy of Sciences; Technical University of Košice)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Materials , VOL 16

State: Published (Approved)
Published: March 2023

Open Access Open Access

Abstract: The Mg-Zn-Ca system has previously been proposed as the most suitable biodegradable candidate for biomedical applications. In this work, a series of ribbon specimens was fabricated using a melt-spinning technique to explore the glass-forming ability of the Mg-Zn-Ca system along the concentration line of 7 at.% of calcium. A glassy state is confirmed for Mg50Zn43Ca7, Mg60Zn33Ca7, and Mg70Zn23Ca7. Those samples were characterised by standard methods to determine their mass density, hardness, elastic modulus, and crystallisation temperatures during devitrification. Their amorphous structure is described by means of pair distribution functions obtained by high-energy X-ray and neutron diffraction (HEXRD and ND) measurements performed at large-scale facilities. The contributions of pairs Mg-Mg, Mg-Zn, and Zn-Zn were identified. In addition, a transformation process from an amorphous to crystalline structure is followed in situ by HEXRD for Mg60Zn33Ca7 and Mg50Zn43Ca7. Intermetallic compounds IM1 and IM3 and hcp-Mg phase are proposed to be formed in multiple crystallisation events.

Journal Keywords: metallic glasses; high-energy X-ray diffraction; neutron diffraction; PDF analysis

Diamond Keywords: Alloys

Subject Areas: Materials, Biology and Bio-materials, Medicine

Instruments: I12-JEEP: Joint Engineering, Environmental and Processing

Other Facilities: P21.1 at PETRA III/DESY

Added On: 19/03/2023 16:45


Discipline Tags:

Biomaterials Materials Science Metallurgy

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