Articles
  • The role of eggshell as a biomaterial in iron-titanium mixtures: innovation and sustainability

  • Aslı Betül Yönetkena,* and Ahmet Yönetkenb

  • aAnkara Yıldırım Beyazıt University,Faculty of Dentistry,Department of Prosthodontics, Yayla Mahallesi Yozgat Bulvarı, 1487. Cadde No:55 Keçiören / Ankara, Türkiye
    bAfyon Kocatepe University, Technology Faculty, Mechatronics Engineering Dept., 03200, Afyonkarahisar, Türkiye

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In this study, Fe-Ti-based composite materials reinforced with varying amounts of EggShell (3-13 wt.%) were fabricated and sintered at 750 °C under an argon atmosphere. Six different compositions were prepared by gradually decreasing Fe and Ti content while increasing the EggShell ratio. The purpose of the study was to investigate the influence of bioceramic (CaCO₃-based) EggShell addition on the microstructural evolution, densification behavior, and potential biofunctionality of the Fe-Ti matrix. The sintering process was carried out in an inert argon atmosphere to prevent oxidation and to ensure controlled diffusion between phases. Preliminary results suggest that the EggShell addition alters the phase composition and porosity, potentially improving the biocompatibility and tailoring the mechanical properties of the composites. These findings may contribute to the development of cost-effective, eco-friendly, and biocompatible materials for biomedical or structural applications.


Keywords: Ceramic-metal composite, Eggshell powder, Innovation, Powder metallurgy.

This Article

  • 2025; 26(6): 1000-1008

    Published on Dec 31, 2025

  • 10.36410/jcpr.2025.26.6.1000
  • Received on Aug 3, 2025
  • Revised on Oct 16, 2025
  • Accepted on Nov 6, 2025

Correspondence to

  • Aslı Betül Yönetken

  • Ankara Yıldırım Beyazıt University,Faculty of Dentistry,Department of Prosthodontics, Yayla Mahallesi Yozgat Bulvarı, 1487. Cadde No:55 Keçiören / Ankara, Türkiye
    Tel : +90 312 906 1000 Fax: +90 312 906 2950

  • E-mail: abyonetken@aybu.edu.tr, yonetken@aku.edu.tr