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Corrosion and tribo-corrosion behavior of a-SiCₓ:H, a-SiNₓ:H and a-SiCₓNy:H coatings on SS301 substrate

D. Li, Srinivasan Guruvenket, Marwan Azzi, J. A. Szpunar, Jolanta-Ewa Sapieha and Ludvik Martinu

Article (2010)

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Amorphous hydrogenated silicon carbide (a-SiCx:H), silicon nitride (a-SiNx:H) and silicon carbonitride (a-SiCxNy:H) coatings were prepared by plasma enhanced chemical vapor deposition (PECVD) and investigated as attractive candidates for corrosion and tribo-corrosion enhancement of stainless steel 301 (SS301). The deposition process has first been optimized in order to obtain the best mechanical properties. All coatings prepared under such optimized conditions exhibited significantly enhanced tribological behavior. They substantially improved the wear resistance of the SS301 substrate, while reducing the wear rate by a factor of ~ 47, 33 and 15, for a-SiCx:H, a-SiNx:H and a-SiCxNy:H coatings, respectively. Corrosion tests in 1% NaCl solution revealed that the coated samples possessed substantially better corrosion resistance than the bare substrate. Specifically, the a-SiCx:H coating exhibited the highest corrosion resistance, with a corrosion current (icorr) of 7.4 × 10− 12 A/cm2, compared to 2.5 × 10− 8 A/cm2 for the bare SS301 substrate. It was observed that the a-SiCxNy:H coating performed very differently under dry and wet tribological conditions. We show that the combination of high wear and corrosion resistance for the a-SiCx:H coating results in its superior performance in tribo-corrosion test, making it a particularly attractive candidate for the applications in which wear and corrosion act simultaneously.

Uncontrolled Keywords

tribo-corrosion; a-SiCx:H coating; synergy of wear and corrosion; EIS

Department: Department of Engineering Physics
Grant number: CRDPJ328038-05
PolyPublie URL: https://publications.polymtl.ca/17979/
Journal Title: Surface and Coatings Technology (vol. 204, no. 9-10)
Publisher: Elsevier
DOI: 10.1016/j.surfcoat.2009.10.018
Official URL: https://doi.org/10.1016/j.surfcoat.2009.10.018
Date Deposited: 18 Apr 2023 15:13
Last Modified: 05 Apr 2024 10:59
Cite in APA 7: Li, D., Guruvenket, S., Azzi, M., Szpunar, J. A., Sapieha, J.-E., & Martinu, L. (2010). Corrosion and tribo-corrosion behavior of a-SiCₓ:H, a-SiNₓ:H and a-SiCₓNy:H coatings on SS301 substrate. Surface and Coatings Technology, 204(9-10), 1616-1622. https://doi.org/10.1016/j.surfcoat.2009.10.018



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