Influence of MWCNTS and sno2 additions on the tribological and bioactivity behavior of porous it-based shape memory alloys

Safaa N. Saud Al-humairi and Hirashini Ganesan and Nurzafirah Mazlan and Nur Faiqa Ismail (2025) Influence of MWCNTS and sno2 additions on the tribological and bioactivity behavior of porous it-based shape memory alloys. Metallurgical and Materials Transactions B, 56. pp. 1334-1351.

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Abstract

This study investigates the impact of multi-walled carbon nanotubes (MWCNTs) and tin dioxide nanoparticles (SnO2) additions on porous Ti43.93-Ni56.07 shape memory alloys (SMAs) tribological behavior. Porous Ti-Ni SMAs are increasingly favored for biomedical applications due to their low modulus and improved osseointegration capabilities. Adding MWCNTs and SnO2 is explored to enhance these alloys’ wear resistance and antibacterial properties. The experimental setup involves varying the weight percentages of MWCNTs (x = 0, 0.5, 0.75, and 1) wt.pct and SnO2 (y = 0, 0.5, 1, and 1.5) wt.pct in the Ti43.93-Ni56.07-x-y matrix. The samples were subjected to tribological testing under different loads of (0.5 and 1) kg and (10 and 20) hertz speeds, and the corresponding wear loss, wear diameter, and wear depth were measured. Statistical analyses, including one-factor ANOVA, two-way ANOM, and regression tests, were performed to determine the significance of the results. The findings reveal that the combination of 0.5 wt.pct MWCNTs and 0.5 wt.pct SnO2 significantly reduces wear loss and wear diameter, highlighting the synergistic effect of these additives. Additionally, biocompatibility tests demonstrated improved antibacterial properties with increased MWCNTs and SnO2 concentrations, especially at 1 wt.pct each. These results suggest that optimizing the concentrations of MWCNTs and SnO2 in Ti-Ni SMAs can significantly enhance their tribological and antibacterial performance, making them suitable for biomedical applications.

Item Type:	Article
Keyword:	Biomedical Materials, Materials Science, Tribology, Carbon Nanotubes and Fullerenes, Materials Chemistry, Materials Engineering
Subjects:	R Medicine > R Medicine (General) > R5-920 Medicine (General) > R856-857 Biomedical engineering. Electronics. Instrumentation T Technology > TA Engineering (General). Civil engineering (General) > TA1-2040 Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Department:	INSTITUTE > Borneo Marine Research Institute
Depositing User:	JUNAINE JASNI -
Date Deposited:	23 Oct 2025 15:38
Last Modified:	23 Oct 2025 15:38
URI:	https://eprints.ums.edu.my/id/eprint/45521

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