A carregar...
Publicação
Microstructure, Mechanical, and Tribological Properties of Mo2N/Ag-SiNx Nanomultilayers with Varying Modulation Periods
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 1.58 MB | Adobe PDF |
Orientador(es)
Resumo(s)
The multilayered Mo2N/Ag-SiNx self-lubricant films were designed and deposited using a
DC (Direct Current) magnetron sputtering system under mixed gas atmosphere of N2 and
Ar. The modulation ratio (thickness ratio of Mo2N to Ag-SiNx) was fixed at 2:1, while the
modulation periods (thickness of Mo2N and its adjacent Ag-SiNx layer) were set at 20, 40,
and 60 nm. The results indicated that all multilayer films, regardless of modulation period,
exhibited a combination of face-centered cubic (fcc) and amorphous phases. Specifically,
fcc-Mo2N was detected in the Mo2N layers, while fcc-Ag and amorphous SiNx co-existed
in the Ag-SiNx layers. The multilayered architecture induced residual stress and interface
strengthening, resulting in hardness values exceeding 21 GPa for all films. Compared
to Mo2N and Ag-SiNx monolayer films, the multilayer structure significantly enhanced
tribological properties at room temperature, particularly in terms of wear resistance. The
Mo2N/Ag-SiNx multilayer films exhibit ~25% lower friction than Ag-SiNx, ~3% lower
than Mo2N, and achieve remarkable wear rate reductions of ~71% and ~85% compared to
Ag-SiNx and Mo2N, respectively, demonstrating superior tribological performance. The
synergistic effects of both modulation layers and relative high hardness were key factors
contributing to the enhanced tribological behavior.
Descrição
Palavras-chave
magnetron sputtering Mo2N/Ag-SiNx multilayered films modulation periods tribological properties
Contexto Educativo
Citação
Luan, J., Wang, L., Dong, S., Ferreira, F., Fernandes, F., Mo, C., Cavaleiro, A., & Ju, H. (2025). Microstructure, Mechanical, and Tribological Properties of Mo2N/Ag-SiNx Nanomultilayers with Varying Modulation Periods. Coatings, 15(9), 1080. https://doi.org/10.3390/coatings15091080
Editora
MDPI