	US 12,258,656 B2
	In-situ magnesium hydroxide nanosheet layer modified magnesium alloy and preparation and application thereof
Guomin Wang, Guangdong (CN); Huaiyu Wang, Guangdong (CN); and Kimho Paul Chu, Guangdong (CN)
Assigned to SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY CHINESE ACADEMY OF SCIENCES, Guangdong (CN)
Appl. No. 16/624,542
Filed by SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY CHINESE ACADEMY OF SCIENCES, Guangdong (CN)
PCT Filed Sep. 30, 2019, PCT No. PCT/CN2019/109475 § 371(c)(1), (2) Date Oct. 6, 2021, PCT Pub. No. WO2021/035875, PCT Pub. Date Mar. 4, 2021.
Claims priority of application No. 201910818027.4 (CN), filed on Aug. 30, 2019.
Prior Publication US 2022/0090236 A1, Mar. 24, 2022
Int. Cl. C23C 22/60 (2006.01); A61L 27/04 (2006.01); A61L 27/30 (2006.01); A61L 27/54 (2006.01); C22C 23/00 (2006.01); B82Y 5/00 (2011.01)

CPC C22C 23/00 (2013.01) [A61L 27/047 (2013.01); A61L 27/306 (2013.01); A61L 27/54 (2013.01); C23C 22/60 (2013.01); A61L 2300/404 (2013.01); A61L 2400/18 (2013.01); A61L 2420/02 (2013.01); B82Y 5/00 (2013.01)]

10 Claims

1. A preparation method of a magnesium alloy material, wherein the preparation method comprises the step of conducting a hydrothermal reaction of a magnesium alloy under an alkaline condition to form a magnesium hydroxide nanosheet layer in situ;

wherein a temperature of the hydrothermal reaction is from 60 to 200° C.; a reaction time of the hydrothermal reaction is more than 30 minutes; and a heating rate of the hydrothermal reaction is 1-30° C.·min⁻¹;

wherein the magnesium alloy material comprises a magnesium alloy body and a magnesium hydroxide nanosheet layer on the surface; the magnesium hydroxide nanosheet in the magnesium hydroxide nanosheet layer has an area between 1 nm²and 10 μm²and a thickness between 1 nm and 1 μm;

wherein the magnesium alloy body is a magnesium alloy having a magnesium content greater than 85 wt %.