	US 12,203,152 B2
	Method of preparing biodegradable Zn—Mg—Bi zinc alloy
Shengqiang Ma, Xi'an (CN); Ping Lv, Xi'an (CN); Xuebin He, Shangluo (CN); Yimin Gao, Xi'an (CN); Xudong Cui, Shangluo (CN); Jiandong Xing, Xi'an (CN); Xiaoli Meng, Xi'an (CN); and Jiankang Zhang, Shangluo (CN)
Assigned to Xi'an Jiaotong University, Xi'an (CN); and SHAANXI ZINC INDUSTRY CO., LTD., Shangluo (CN)
Filed by Xi'an Jiaotong University, Xi'an (CN); and SHAANXI ZINC INDUSTRY CO., LTD., Shangluo (CN)
Filed on Dec. 22, 2023, as Appl. No. 18/395,215.
Application 18/395,215 is a division of application No. 17/840,871, filed on Jun. 15, 2022, abandoned.
Claims priority of application No. 202111525807.3 (CN), filed on Dec. 14, 2021.
Prior Publication US 2024/0295009 A1, Sep. 5, 2024
Int. Cl. C22C 12/00 (2006.01); C22C 1/02 (2006.01); C22C 13/00 (2006.01); C22C 18/00 (2006.01)

CPC C22C 12/00 (2013.01) [C22C 1/02 (2013.01); C22C 13/00 (2013.01); C22C 18/00 (2013.01)]

6 Claims

1. A method for preparing a biodegradable Zn—Mg—Bi zinc alloy, comprising:

(1) melting magnesium under an inert atmosphere to obtain a magnesium melt; adding bismuth particles to the magnesium melt followed by reaction under stirring and heat preservation treatment to obtain a Mg—Bi alloy melt; allowing the Mg—Bi alloy melt to stand in a furnace; and subjecting the Mg—Bi alloy melt to refining, slagging-off, casting and demoulding to obtain a Mg-50 wt. % Bi alloy ingot; and

(2) melting zinc to obtain a zinc melt; adding the Mg-50 wt. % Bi alloy ingot and pure magnesium or pure bismuth to the zinc melt, followed by heating under stirring, and heat preservation to obtain a Zn—Mg—Bi alloy melt; allowing the Zn—Mg—Bi alloy melt to stand in the furnace; and subjecting the Zn—Mg—Bi alloy melt to refining, slagging-off, casting and demoulding to obtain the biodegradable Zn—Mg—Bi zinc alloy.