Mg-<i>x</i>Sc(<i>x</i>=0.5,1.0,3.0,5.0)生物医用合金组织与性能研究

doi:10.11896/cldb.24090019

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Abstract Medical implants are moving towards cyclic degradation and reduction of complications. Magnesium alloys are excellent candidates for the preparation of medical implants due to their excellent biodegradability and biocompatibility. In this paper, the effects of microstructure of under-alloyed Mg-xSc (x=0.5, 1.0, 3.0, 5.0 in wt%) alloys on their mechanical properties and corrosion resistance were investigated. The expe-rimental study showed that the solid solution of Sc in the Mg matrix increased the ultimate tensile strength and activated the non-basal slip system to improve fracture elongation through solid solution strengthening. The Mg-5.0Sc alloy was measured to have an ultimate tensile strength and a fracture elongation of 277 MPa and 37.8%, respectively. The corrosion of the Mg-xSc alloys in Hanks’ balanced salt solution were evaluated through three methods (weight loss, hydrogen evolution, and electrochemical tests), indicating the superior corrosion resistance of Mg-5.0Sc to the other three alloys. The corrosion rates of the under-alloyed Mg-xSc were all lower than 0.5 mm/y according to weight loss calculation, and the corrosion products consisted mainly of Sc₂O₃ and Mg(OH)₂.

Key words： under-alloyed Mg-Sc alloy microstructure mechanical property corrosion resistance

Published: 10 March 2025 Online: 2025-03-18

CLC number:

TG14

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	Articles by authors
	WANG Senwei
	WANG Li
	WANG Mingqing
	SHE Jia
	YI Jiayan
	CHEN Xianhua
	PAN Fusheng

Cite this article:

WANG Senwei,WANG Li,WANG Mingqing, et al. Microstructure and Properties of Mg-xSc (x=0.5,1.0,3.0,5.0) Biomedical Alloys[J]. Materials Reports, 2025, 39(5): 24090019-8.

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https://www.mater-rep.com/EN/10.11896/cldb.24090019 OR https://www.mater-rep.com/EN/Y2025/V39/I5/24090019

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