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Corrosion resistance and antimicrobial properties of ZnO-Ce2O3 coatings by magnetron sputtering

Year: 2025

Type: article

Abstract: The ZnO-Ce2O3 composite coating developed in this study significantly enhances the medical applicability of 316L stainless steel by synergistically improving corrosion resistance and antibacterial performance. Through magnetron sputtering, the ZnO-Ce2O3 composite coating reduces the corrosion current density of 316L stainless steel by an order of magnitude (from 2.935 × 10−7 to 1.278 × 10−8 A/cm2), outperforming individual ZnO or CeO2 coatings. Biological experiments demonstrated that the composite coating achieved over 98% antibacterial efficiency against Staphylococcus aureus while exhibiting low cytotoxicity toward mesenchymal stem cells, thereby addressing critical limitations of traditional stainless steel in medical devices. Additionally, the increased water contact angle (from 80° to 114°) correlated with inhibited bacterial adhesion, suggesting a dual antibacterial mechanism. This multifunctional coating strategy offers a promising solution for improving implant safety and patient outcomes.

Source: Journal of Vacuum Science & Technology A Vacuum Surfaces and Films

DOI: 10.1116/6.0004466

Authors: Rong Tu, Zixiong Qin, Wei Wu, Long Zheng, Qingfang Xu, Tenghua Gao, Song Zhang, Honglian Dai, Takashi Goto

Institutions: Wuhan University of Technology, State Key Laboratory of Advanced Technology For Materials Synthesis and Processing

Language: English

Topic: Surface Treatment and Coatings

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Good health and well-being

Open Access status: hybrid

OpenAlex ID: W4410825806

FWCI:

Cites: 30

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Related to: 10