Superficial Modification of the Mg–Zn Biomaterials via Ion Nitriding for Biomedical Applications
| Autor: | Sergio Gonzaga, Arturo Molina, Rene Guardian, Horacio Martínez, Edna Vázquez-Vélez, Eduardo Lira-Díaz |
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| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Metals, Vol 14, Iss 2, p 203 (2024) |
| Druh dokumentu: | article |
| ISSN: | 14020203 2075-4701 |
| DOI: | 10.3390/met14020203 |
| Popis: | In the present work, the powder metallurgy (PM) technique was used to synthesize biocompatible alloys Mg95–Zn5, Mg90–Zn10, and Mg85–Zn15 (wt %) under an argon atmosphere that employed stainless-steel vessels and spheres with a milling treatment of 360 rpm during 15 h. The obtained powder was consolidated through a sintering process for subsequent ion nitriding treatment to increase its corrosion resistance and hardness. The synthesized alloys analyzed by Scanning electron microscopy (SEM) images showed a reduction in particle size with increasing grinding time. The X-ray diffraction (XRD) results showed the formation of a MgZn intermetallic phase and, furthermore, that no impurities were found during the grinding process. The surface-modified Mg–Zn alloys showed some improvement in terms of corrosion (Ecorr 26% and Icorr 13%) and microhardness (HV 40%) compared to Mg. Cytotoxicity evaluation was conducted via an MTT ((3-(4,5-DIMETHYLTHIAZOL-2-YL)-2,5-DIPHENYLTETRAZOLIUM BROMIDE)) assay, which revealed that the Mg–Zn alloys and nitrided samples did not exhibit cytotoxicity towards fibroblast cells after 96 h. |
| Databáze: | Directory of Open Access Journals |
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