Method of preparing coating of biomedical magnesium alloys and magnesium or magnesium alloy comprising the coating

US10619264B2 · kind B2 · utility

Assignee

• CHANGZHOU UNIVERSITY · CN

Inventors

• Shaokang GUAN · Zhengzhou, CN
• Di Mei · Zhengzhou, CN
• Yashan Feng · Zhengzhou, CN
• Shijie Zhu · Heyuan, CN
• Jun Wang · Nanjing, CN
• Liguo Wang · Huangyang, CN
• Yanhua Wang · Beijing, CN

Key dates

• Filing date: Jun 28, 2018
• Grant date: Apr 14, 2020
• Expiry date: Jul 12, 2038

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61L2430/02
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A method including: employing pure magnesium or a magnesium alloy as a substrate material, and sanding and cleaning the substrate material; preparing an electrolyte including 0.8-8 mmol/L of Zn2+, 30-50 mmol/L of Ca+, 15-35 mmol/L of H2PO4−, 0-0.5 mol/L of NaNO3, and 0-0.05 mmol/L of a magnesium ion complexing agent; employing the substrate material as a cathode, a graphite flake as an anode, heating the electrolyte to a temperature of between 60 and 90° C., and synchronously immersing the cathode and the anode into the electrolyte; and implementing an electrochemical deposition method in the electrolyte for between 20 and 60 min.