Unraveling femtosecond laser drilling of slanted holes in SiC/SiC composites: Morphological characterization, asymmetric oxidation mechanisms, and oxidation-free drilling processing

Lei Gao

doi:10.1016/j.jmatprotec.2026.119320

Unraveling femtosecond laser drilling of slanted holes in SiC/SiC composites: Morphological characterization, asymmetric oxidation mechanisms, and oxidation-free drilling processing

2026-04-12

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AI

L

Lei Gao

C

Chang Liu *

J

Junjie Liu

DOI：10.1016/j.jmatprotec.2026.119320

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• Revealed asymmetric oxidation mechanism of slanted hole in SiC/SiC composites. • Established multi-angle slanted hole drilling model with solid-liquid-gas phases. • Found melt/gas directional flow coupled with asymmetric temperature distribution. • Proposed water/magnetic-assisted laser drilling for fabricating oxidation-free slanted holes.

Keywords:

slanted hole drilling

SiC/SiC composites

asymmetric oxidation mechanism

femtosecond laser

oxidation-free processing

Unraveling femtosecond laser drilling of slanted holes in SiC/SiC composites: Morphological characterization, asymmetric oxidation mechanisms, and oxidation-free drilling processing

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