Corrosion Behavior and Biocompatibility of Diamond-like Carbon-Coated Zinc: An In Vitro Study

• DOI: 10.1021/acsomega.1c00531
• Publication Date: 2021-04-02T20:48:15Z
• Authors: Feng Peng; Yulin Lin; Dongdong Zhang; Qingdong Ruan; Kaiwei Tang; Mei Li; Xuanyong Liu; Paul K. Chu; Yu Zhang
• Keywords: Biocompatibility; Diamond-like carbon

Owing to the desirable degradation rate and good biocompatibility, zinc (Zn) Zn alloys are promising biodegradable implant metals in orthopedic cardiovascular applications. Surface modification, such as deposition of coatings, is frequently implemented further enhance their biological properties. In this study, diamond-like carbon (DLC) films deposited on by magnetron sputtering. The DLC do not change surface morphology but alter hydrophobic properties with a contact angle approximately 90°. Electrochemical vitro immersion tests reveal that corrosion resistances DLC-coated decrease unexpectedly, which possibly due galvanic between film substrate. Furthermore, uncoated coated samples show hemolysis ratios less than 1%. cells cultured extract exhibit higher viability those Zn, suggesting cytocompatibility Zn. lower resistance has little influence ratio, an obstacle for design Zn-based biomaterials. Our results traditional concept protection may be applicable universally decreased actually observed