Agung Premono, Imam Basori, Ragil Sukarno, Ferry Budhi Susetyo, A. Ali Alhamidi, Hanif Setia Anugrah, Mochammad Fajr Dzakwan Muqafillah, Sigit Dwi Yudanto, Muhammad Yunan Hasbi, Evi Ulina Margareta Situmorang, Daniel Edbert, Etty Mutiara, Rosika Kriswarini, Agus Jamaludin, Maman Kartaman Ajiriyanto, Cahaya Rosyidan
Magnesium (Mg) alloy is used for various medical purposes, such as bone implants. In the present study, MgAlSixZn alloys were created utilizing the gravity casting by adding various Zinc (Zn) (x is 0, 0.5, 1.2, and 1.7 wt.%) and then homogenized at 400◦ C for around two hours. MgAlSixZn as-homogenized samples were investigated for microstructure, phase structure, electrochemical behavior, surface morphology, bacterial activity, hardness, and thermal behavior using an optical microscope, XRD, Potentiostat, SEM-EDS, digital camera, Vickers hardness test, and Thermogravimetric apparatus, respectively. Several findings include that increasing Zn content implies a grain growth inhibition mechanism facilitated by Zn segregation at grain boundaries, increased corrosion rates, a rise in the hardness, and increased weight loss. It should be noted that the increase in the corrosion rate and weight loss occurs linearly for Zn addition in the Mg alloy until 1.2 wt.%. An increase in Zn concentration causes the peak shift in MgAlSi-based alloy samples, but no crystallographic orientation is apparent. At the end, the highest corrosion rate and inhibition area are observed in MgAlSi1.2Zn sample, which indicates that it is suitable for biodegradable orthopedic wire. © 2026 The Authors.
Department of Mechanical Engineering, Universitas Negeri Jakarta, Jakarta, 13220, Indonesia; Department of Mechanical Engineering, Jenderal Sudirman University, Purwokerto, 53371, Indonesia; Research Center for Metallurgy, National Research and Innovation Agency, Banten, Tangerang Selatan, 15314, Indonesia; Department of Physiology School of Medicine and Health Sciences, Atma Jaya Catholic University of Indonesia, Jakarta, 14440, Indonesia; Department of Microbiology, Atma Jaya Catholic University of Indonesia, Jakarta, 14440, Indonesia; Research Center for Nuclear Material and Radioactive Waste Technology, National Research and Innovation Agency, Banten, Tangerang Selatan, 15314, Indonesia; Department of Petroleum Engineering, Universitas Trisakti, Jakarta, 11440, Indonesia
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