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Fabrication and multifunctional performance of MAO/PTFE composite coating on 6061 aluminum alloy for enhanced insulation, lubrication and corrosion resistance

delete2026-06-27
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PRE
AI
Y
Yixuan Liu
H
Hao Yang *
X
Xueqin Xu
H
Hailin Lu
K
Kexin Gong
C
Chao Gao
F
Fusheng zhou
DOI:10.1016/j.mtla.2026.102810delete
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Abstract

Abstract

En 中文
To address the comprehensive protection challenges of 6061 aluminum alloy under harsh environments, a MAO/PTFE composite coating was fabricated via micro-arc oxidation combined with high-temperature vacuum sintering. The melted PTFE infiltrated into the porous MAO layer, forming a mechanically interlocked "hard-soft" structure. The composite coating achieved an average breakdown voltage of 5.01 kV, 10.2 times that of a single MAO layer, with a transition from surface flashover to bulk breakdown. The water contact angle reached 118.7°, and the friction coefficients under dry and wet conditions were as low as 0.2 and 0.15, respectively. The polarization resistance was enhanced to 3264.1 Ω·cm². This work substantially improves the insulation, lubrication, and corrosion resistance of aluminum alloy, offering a promising strategy for multifunctional surface protection.

Journal

Materialia cover
Materialia
IF:
2.9
Papers:
2.2K
Citations:
6.5K

Organization

X
xi'an jiaotong university
Scholars:
8.9W
Papers: 6.5W
Citations: 75
Y
yunnan electric power company limited
Scholars:
2
Papers: 1
Citations: 0
X
xi'an polytechnic university
Scholars:
945
Papers: 287
Citations: 0
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