journal article·2025-07-08

Corrosion Resistance and Bacteriostatic Properties of DCPD-PMTMS-CS Coating on Additive Manufacturing Preparation of NiTi Alloy Surface

Yanan Yang, Pengwei Sha, Panpan Li, Zezhou Xu, Yunting Guo, Zhenglei Yu, Zhihui Zhang, Chunling Mao, Luquan Ren

Langmuir· Volume 41· Issue 26
Publisher page

Abstract

The nickel–titanium (NiTi) alloy implant materials produced by using the laser powder bed melting (LPBF) technique exhibit significant potential for application. The coating modification method can further enhance the surface biological functions of the alloy implants. This study presents a coating of calcium dihydrogen phosphate, siloxane, and chitosan (DCPD-PMTMS-CS) applied to the surface of NiTi alloys through electrochemical deposition and dip coating methods. This coating enhances the biocompatibility, corrosion resistance, and antibacterial properties of the alloy’s surface. The findings indicate that the corrosion current density decreases (from 1.5 × 10 –6 to 1.2 × 10 –8 A/cm 2 ), demonstrating a significant improvement compared to bare NiTi alloy. Furthermore, the cell vitality reached an impressive 108%. Additionally, the antibacterial efficacy against E. coli and S. aureus exceeded 70%, effectively mitigating the risk of postoperative infections. The DCPD-PMTMS-CS composite coating holds promise for facilitating the broader application of LPBF-NiTi in the medical implantation sector.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: ZnO doping and properties · High Entropy Alloys Studies · Shape Memory Alloy Transformations

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, 5988, Renmin Street, Changchun 130025, China

College of Mechanical and Electrical Engineering

Northeast Forestry University

National Key Laboratory of Automotive Chassis Integration and Bionics, Jilin University, 5988, Renmin Street, Changchun 130025, China

Changchun Vocational Institute of Technology

Funding

National Key Research and Development Program of China · China Postdoctoral Science Foundation · Natural Science Foundation of Heilongjiang Province · Jilin University · Jilin Provincial Scientific and Technological Development Program · National Natural Science Foundation of China · Education Department of Jilin Province · Interdisciplinary Cultivation Project for Young Teachers and Students · Innovative Research and Development Team for Bone Implants based on Additive Manufacturing · Capital construction fund plan within the budget of Jilin Province

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