|
1
|
Wu H, Xi K, Huang Y, Zheng Z, Wu Z, Liu R, Zhou C, Xu Y, Du H, Yin Y. Highly Orientated Sericite Nanosheets in Epoxy Coating for Excellent Corrosion Protection of AZ31B Mg Alloy. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2310. [PMID: 37630895 PMCID: PMC10457806 DOI: 10.3390/nano13162310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 08/01/2023] [Accepted: 08/08/2023] [Indexed: 08/27/2023]
Abstract
The growing demands for material longevity in marine environments necessitate the development of highly efficient, low-cost, and durable corrosion-protective coatings. Although magnesium alloys are widely used in the automotive and aerospace industries, severe corrosion issues still hinder their long-term service in naval architecture. In the present work, an epoxy composite coating containing sericite nanosheets is prepared on the AZ31B Mg alloy using a one-step electrophoretic deposition method to improve corrosion resistance. Due to the polyetherimide (PEI) modification, positively charged sericite nanosheets can be highly orientated in an epoxy coating under the influence of an electric field. The sericite-incorporated epoxy coating prepared in the emulsion with 4 wt.% sericite exhibits the highest corrosion resistance, with its corrosion current density being 6 orders of magnitude lower than that of the substrate. Electrochemical measurements and immersion tests showed that the highly orientated sericite nanosheets in the epoxy coating have an excellent barrier effect against corrosive media, thus significantly improving the long-term anti-corrosion performance of the epoxy coating. This work provides new insight into the design of lamellar filler/epoxy coatings with superior anticorrosion performance and shows promise in the corrosion protection of magnesium alloys.
Collapse
Affiliation(s)
- Hao Wu
- Guangdong Key Laboratory of Materials and Equipment in Harsh Marine Environment, Guangzhou Maritime University, Guangzhou 510725, China; (H.W.); (Y.H.); (Z.Z.); (Z.W.); (R.L.); (H.D.)
- School of Naval Architecture and Ocean Engineering, Guangzhou Maritime University, Guangzhou 510725, China
| | - Ke Xi
- School of Mechanical and Automobile Engineering, South China University of Technology, Guangzhou 510641, China;
| | - Yan Huang
- Guangdong Key Laboratory of Materials and Equipment in Harsh Marine Environment, Guangzhou Maritime University, Guangzhou 510725, China; (H.W.); (Y.H.); (Z.Z.); (Z.W.); (R.L.); (H.D.)
- School of Naval Architecture and Ocean Engineering, Guangzhou Maritime University, Guangzhou 510725, China
| | - Zena Zheng
- Guangdong Key Laboratory of Materials and Equipment in Harsh Marine Environment, Guangzhou Maritime University, Guangzhou 510725, China; (H.W.); (Y.H.); (Z.Z.); (Z.W.); (R.L.); (H.D.)
- School of Naval Architecture and Ocean Engineering, Guangzhou Maritime University, Guangzhou 510725, China
| | - Zhenghua Wu
- Guangdong Key Laboratory of Materials and Equipment in Harsh Marine Environment, Guangzhou Maritime University, Guangzhou 510725, China; (H.W.); (Y.H.); (Z.Z.); (Z.W.); (R.L.); (H.D.)
- School of Naval Architecture and Ocean Engineering, Guangzhou Maritime University, Guangzhou 510725, China
| | - Ruolin Liu
- Guangdong Key Laboratory of Materials and Equipment in Harsh Marine Environment, Guangzhou Maritime University, Guangzhou 510725, China; (H.W.); (Y.H.); (Z.Z.); (Z.W.); (R.L.); (H.D.)
| | - Chilou Zhou
- School of Mechanical and Automobile Engineering, South China University of Technology, Guangzhou 510641, China;
| | - Yao Xu
- Guangdong Institute of Special Equipment Inspection and Research, Foshan 510655, China;
| | - Hao Du
- Guangdong Key Laboratory of Materials and Equipment in Harsh Marine Environment, Guangzhou Maritime University, Guangzhou 510725, China; (H.W.); (Y.H.); (Z.Z.); (Z.W.); (R.L.); (H.D.)
- School of Naval Architecture and Ocean Engineering, Guangzhou Maritime University, Guangzhou 510725, China
| | - Yansheng Yin
- Guangdong Key Laboratory of Materials and Equipment in Harsh Marine Environment, Guangzhou Maritime University, Guangzhou 510725, China; (H.W.); (Y.H.); (Z.Z.); (Z.W.); (R.L.); (H.D.)
| |
Collapse
|
|
2
|
Zhang ZQ, Yang YX, Li JA, Zeng RC, Guan SK. Advances in coatings on magnesium alloys for cardiovascular stents - A review. Bioact Mater 2021; 6:4729-4757. [PMID: 34136723 PMCID: PMC8166647 DOI: 10.1016/j.bioactmat.2021.04.044] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/27/2021] [Accepted: 04/27/2021] [Indexed: 12/15/2022] Open
Abstract
Magnesium (Mg) and its alloys, as potential biodegradable materials, have drawn wide attention in the cardiovascular stent field because of their appropriate mechanical properties and biocompatibility. Nevertheless, the occurrence of thrombosis, inflammation, and restenosis of implanted Mg alloy stents caused by their poor corrosion resistance and insufficient endothelialization restrains their anticipated clinical applications. Numerous surface treatment tactics have mainly striven to modify the Mg alloy for inhibiting its degradation rate and enduing it with biological functionality. This review focuses on highlighting and summarizing the latest research progress in functionalized coatings on Mg alloys for cardiovascular stents over the last decade, regarding preparation strategies for metal oxide, metal hydroxide, inorganic nonmetallic, polymer, and their composite coatings; and the performance of these strategies in regulating degradation behavior and biofunction. Potential research direction is also concisely discussed to help guide biological functionalized strategies and inspire further innovations. It is hoped that this review can give assistance to the surface modification of cardiovascular Mg-based stents and promote future advancements in this emerging research field.
Collapse
Affiliation(s)
- Zhao-Qi Zhang
- School of Material Science and Engineering & Henan Key Laboratory of Advanced Magnesium Alloy & Key Laboratory of Materials Processing and Mold Technology (Ministry of Education), Zhengzhou University, 100 Science Road, Zhengzhou, 450001, PR China
| | - Yong-Xin Yang
- School of Material Science and Engineering & Henan Key Laboratory of Advanced Magnesium Alloy & Key Laboratory of Materials Processing and Mold Technology (Ministry of Education), Zhengzhou University, 100 Science Road, Zhengzhou, 450001, PR China
| | - Jing-An Li
- School of Material Science and Engineering & Henan Key Laboratory of Advanced Magnesium Alloy & Key Laboratory of Materials Processing and Mold Technology (Ministry of Education), Zhengzhou University, 100 Science Road, Zhengzhou, 450001, PR China
| | - Rong-Chang Zeng
- Corrosion Laboratory for Light Metals, College of Material Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Shao-Kang Guan
- School of Material Science and Engineering & Henan Key Laboratory of Advanced Magnesium Alloy & Key Laboratory of Materials Processing and Mold Technology (Ministry of Education), Zhengzhou University, 100 Science Road, Zhengzhou, 450001, PR China
| |
Collapse
|