Ouyang, B., Sun, C., Du, Y., Chaurasiya, A., Zhang, Z., Zhu, J., Kan, E., Li, F., & Rawat, R. S. (2024). Operando facet control of hydrophobic iron nitride nano-coral for surface protection via field-modulated plasma strategy. Applied Surface Science, 675, 160972. https://doi.org/10.1016/j.apsusc.2024.160972
Abstract:
A facile facet reconfiguration has been considered as an essential issue for nitride coating in promoting surface protection behaviour. Compared to physical-chemical methods to achieve heterogeneous coating, plasma nitridation strategy is regarded as a favourable technique to in-situ deliver nitride protecting layer, but it is difficult to precisely control surface framework through plasma technique due to complicated interaction environment. To simply achieve nitride coating with favourable surface protection behaviour, we design a novel auxiliary insulator-confined plasma system to directly achieve hydrophobic iron nitride nano-coral (hFeNC) with desirable corrosion- and wear-resistant properties by controlling surface heating process during plasma nitridation. The resultant hFeNC nano-framework delivers corrosion rate of 1.2 mpy, 4- and 9-times lower than that of solid iron nitride film (sFeN) via normal plasma and initial Fe in NaCl condition, respectively. Operando plasma diagnostics along with numerical simulation further confirm the effect of surface heating on typical plasma parameters as well as the iron nitride nano-frameworks, indicating surface heating as the key factor responsible for the favourable surface protection coating.
License type:
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
Funding Info:
This research / project is supported by the National Natural Science Foundation of China - NA
Grant Reference no. : 12304020
This research / project is supported by the National Science Fund for Distinguished Young Scholars - NA
Grant Reference no. : T2125004
This research / project is supported by the Natural Science Foundation of Jiangsu Province - NA
Grant Reference no. : BK20230909
This research / project is supported by the Fundamental Research Funds for the Central Universities - NA
Grant Reference no. : 30923011013
This research / project is supported by the Funding of NJUST - NA
Grant Reference no. : TSXK2022D002
This research / project is supported by the Agency for Science, Technology and Research, and Ministry of Education, Singapore - NIE AcRF grant
Grant Reference no. : RI 7/22 RSR