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Surface-engineered grain-boundary diffusion in thick NdFeB magnets enabling interfacial phase control and resource-efficient enhancement of coercivity and corrosion resistance

delete2026-06-16
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PRE
AI
C
Ching-Chien Huang *
C
Chih-Chieh Mo
DOI：10.1016/j.surfcoat.2026.133683delete
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Abstract

Abstract

En 中文
• A single-stage Dy diffusion route upgrades thick NdFeB magnets efficiently. • Interface-engineered shell phases enable dual magnetic and corrosion gains. • 5.5 and 6.5 mm magnets reached iHc of 25.78 and 25.06 kOe, respectively. • High coercivity was achieved with Dy consumption below 0.12 wt%. • Surface-driven grain-boundary control avoids conventional bulk HRE alloying.

Journal

Surface and Coatings Technology cover
Surface and Coatings Technology
IF:
6.1
Papers:
2.8W
Citations:
7.1W

Organization

N
national kaohsiung university of science and technology
Scholars:
457
Papers: 222
Citations: 0
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