Journal Article

PUBDB-2026-00543

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Stainless magnesium alloy based on self-healing amorphous surface

Chen, Y. ; Liu, Y. ; Ying, T. (Corresponding author) ; Yang, Y. ; Wang, J. (Corresponding author) ; Xu, X. ; Shen, Z. ; Li, Y. ; Qiu, D. (Corresponding author) ; Zhu, H. ; Wu, J. ; Zhu, G.Extern* ; Cao, F. ; Ding, W. ; Zeng, X. (Corresponding author)

2026
Elsevier Science Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.mattod.2025.11.015

Abstract: Ultra-lightweight magnesium alloys characterized by high specific strength are highly sought after for applications in the automotive and aerospace industries. However, conventional magnesium alloys behave poor corrosion resistance when exposed to moisture, which significantly reduces their service life, thus limiting their applications and hindering effective realization of their lightweight advantages. Here, we develop a novel stainless Mg-2Sc-0.5Al alloy, which exhibits the lowest corrosion rate of 0.027 mm/year among all reported magnesium alloys and behaves insensitivity of Fe impurity content. More remarkably, the surface film of this stainless magnesium alloy possesses the ability to fully self-heal within hours of being scratched, which gives superior and long-term protection. The superior corrosion resistance of the stainless Mg-2Sc-0.5Al alloy origins from the rapid formation and stabilization of a compact amorphous surface film facilitated by the addition of Al and Sc. The stable amorphous surface film effectively and rapidly shields the magnesium matrix from the corrosive media, thereby significantly enhancing the corrosion resistance. This work offers an efficient design strategy to form the protective amorphous surface film and further inspires the development of stainless magnesium alloys across various systems.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. PETRA-D (FS-PETRA-D)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)

Experiment(s):

1. PETRA Beamline P21.2 (PETRA III)

Appears in the scientific report 2026

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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