Enhancing superlubricity of a-C:H films via trace sulfur incorporation: Microstructure-interface synergistic regulation mechanism

Chenglong Mou

doi:10.1016/j.jmst.2025.11.059

Enhancing superlubricity of a-C:H films via trace sulfur incorporation: Microstructure-interface synergistic regulation mechanism

2025-12-19

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AI

C

Chenglong Mou

F

Fu Wang *

Z

Zhengyu Liu

L

Lin Chen

G

Guangan Zhang *

DOI：10.1016/j.jmst.2025.11.059

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• The successful synthesis of a-C:H(S,W) films incorporated with trace sulfur has achieved superlubricity. • a-C:H(S,W) achieved superlubricity (0.005) while reducing the wear rate by 84%. • Sulfur incorporation stabilized tribo-interfaces via C-S coordination, bridging microstructure, and macroscopic performance. • Hydrogen passivation and incommensurate interface contact facilitated synergistic superlubricity.

Enhancing superlubricity of a-C:H films via trace sulfur incorporation: Microstructure-interface synergistic regulation mechanism

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