Next Article in Journal
Thermal Analysis and Machinability Assessment of Aluminium–Biomass Ash Composites in Orthogonal Cutting Processes
Previous Article in Journal
Enhancing Predictive Accuracy of Novel Creep Model for Stainless Steel 316 Using AI-Driven Optimization and Machine Learning Methods
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Materials Proceedings
Volume 31
Issue 1
10.3390/materproc2026031030
materproc-logo
Submit to this Journal
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
Proceeding Paper

An Investigation into the Electrochemical Test on Corrosion and Surface Characterisation of Alumina AI2O3 for Bio-Inspired 3D Dental Implants †

by
Winnie Mtetwa
1,*,
Emmanuel Munenge
1,
Lebogang Lebea
2,
Harry M. Ngwangwa
1 and
Thanyani Pandelani
1
1
Department of Mechanical, Bioresources and Biomedical Engineering, College of Science and Engineering Technology, University of South Africa, P.O. Box Private Bag X6, Johannesburg 1710, South Africa
2
Department of Mechanical and Mechatronic Engineering, Central University of Technology, P.O. Box Private Bag X20539, Bloemfontein 9300, South Africa
*
Author to whom correspondence should be addressed.
†
Presented at the 4th International Conference on Applied Research and Engineering, Pretoria, South Africa, 21–23 November 2025.
Mater. Proc. 2026, 31(1), 30; https://doi.org/10.3390/materproc2026031030
Published: 26 May 2026
(This article belongs to the Proceedings of The 4th International Conference on Applied Research and Engineering)
Browse Figures
Versions Notes

Abstract

Alumina is a long-used dental and medicinal biomaterial. It is considered one of the best jaw implant materials and has greater antibacterial resistance than titanium (Ti6Al-4V). 3D-printed alumina dental implants were tested in NaCl and Ringer’s solutions for electrochemical corrosion. In six studies, linear polarisation (LPR), electrochemical impedance spectroscopy (EIS), linear sweep voltammetry (LSV), and SEM were used to assess, compare, and elucidate corrosion mechanisms in 3.5% NaCl solution and Ringer’s solution at 25 °C, 45 °C, and 65 °C. At 25–65 °C, alumina in NaCl had corrosion rates of 0.000016–0.000013 mm/yr. Polarisation resistance was good even in a chloride-rich environment at high temperatures, showing effective corrosion protection. The EIS test indicated that the alumina film’s excellent dielectric and insulating capabilities prevented deterioration of the alumina substrate in a concentrated chloride solution. The SEM showed no deep pits.
Keywords: additive manufacturing; corrosion; alumina; dental implants; microstructure; electrochemical corrosion additive manufacturing; corrosion; alumina; dental implants; microstructure; electrochemical corrosion

Share and Cite

MDPI and ACS Style

Mtetwa, W.; Munenge, E.; Lebea, L.; Ngwangwa, H.M.; Pandelani, T. An Investigation into the Electrochemical Test on Corrosion and Surface Characterisation of Alumina AI2O3 for Bio-Inspired 3D Dental Implants. Mater. Proc. 2026, 31, 30. https://doi.org/10.3390/materproc2026031030

AMA Style

Mtetwa W, Munenge E, Lebea L, Ngwangwa HM, Pandelani T. An Investigation into the Electrochemical Test on Corrosion and Surface Characterisation of Alumina AI2O3 for Bio-Inspired 3D Dental Implants. Materials Proceedings. 2026; 31(1):30. https://doi.org/10.3390/materproc2026031030

Chicago/Turabian Style

Mtetwa, Winnie, Emmanuel Munenge, Lebogang Lebea, Harry M. Ngwangwa, and Thanyani Pandelani. 2026. "An Investigation into the Electrochemical Test on Corrosion and Surface Characterisation of Alumina AI2O3 for Bio-Inspired 3D Dental Implants" Materials Proceedings 31, no. 1: 30. https://doi.org/10.3390/materproc2026031030

APA Style

Mtetwa, W., Munenge, E., Lebea, L., Ngwangwa, H. M., & Pandelani, T. (2026). An Investigation into the Electrochemical Test on Corrosion and Surface Characterisation of Alumina AI2O3 for Bio-Inspired 3D Dental Implants. Materials Proceedings, 31(1), 30. https://doi.org/10.3390/materproc2026031030

Article Metrics

Back to TopTop