ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

In vitro corrosion behavior of novel FSP-fabricated ZE41/Ti–6Al–4V/SiC metal matrix composite for biomedical implant applications

Annayath Maqbool, Noor Zaman Khan, Tariq Ahmad, Adil Nazeer, Suhail Ahmed Manroo, Aqib Abdullah, Saad Parvez, and Babar Ahmad

National Institute of Technology Srinagar, Srinagar, India

E-mail: noorzaman@nitsri.ac.in

Received: 28 June 2025  Accepted: 16 August 2025

Abstract:

This study compares the corrosion behavior and surface bioactivity of a Mg alloy (ZE41) and a novel FSP-fabricated ZE41/Ti–6Al–4V/SiC metal matrix composite after immersion in simulated body fluid. The field emission scanning electron microscopy micrograph of metal matrix composite (MMC) exhibits a refined grain structure with uniformly dispersed reinforcement particles, confirming successful integration of Ti, Al, V, Si, and C into the Mg matrix. While the base alloy exhibited severe localized corrosion with deep pits, the MMC showed significantly enhanced corrosion resistance, with degradation rates decreasing from 4.6 mm/year to 0.86 mm/year (81% reduction). Energy-dispersive spectroscopy confirmed that the dispersed reinforcements promoted passivation and reduced galvanic corrosion. The MMC also displayed superior surface distribution of Ca and P, indicating improved bioactivity.

Keywords: ZE41 magnesium alloy; Friction stir processing; Biodegradable implants; Bioactivity

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-025-04331-x

Chemical Papers 79 (11) 8219–8226 (2025)