Corrosion and tribological behaviour in a 3.5% NaCl solution of vacuum arc deposited ZrCN and Zr–Cr–Si–C–N coatings

Lidia R. Constantin, Anca C. Parau, Mihai Balaceanu, Mihaela Dinu, Alina Vladescu

Research output: Contribution to journalArticle

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Abstract

© IMechE 2018. ZrCN and Zr–Cr–Si–C–N coatings were deposited on Si (100) and 316L stainless steel substrates using the cathodic vacuum arc technique in a mixed atmosphere of C 2 H 2 and N 2 . The coatings were grown keeping almost constant the ratio of the C 2 H 2 and N 2 mass flow rates, substrate bias and deposition temperature at ∼0.81, −200 V and 320 ℃, respectively. The investigation carried out aimed to determine the corrosion and tribological performance of the novel Zr–Cr–Si–C–N coating obtained by Cr and Si addition to the ZrCN reference coating. The films were characterized in terms of elemental and phase composition, crystalline structure, hardness, reduced elastic modulus and adhesion. Particular attention was devoted to the investigation of coatings' corrosion resistance and tribological performance carried out in a 3.5% NaCl solution. Cr and Si addition to ZrCN coating leads to reduction in film crystallinity, finer microstructure, enhanced corrosion resistance and better tribological performance under corrosive testing conditions. In this paper, we discuss the measured mechanical and tribological properties of the two coatings in terms of various ratios of hardness and reduced elastic modulus. The coated samples exhibited high corrosion protection efficiency, reaching 97.8% for the Zr–Cr–Si–C–N coating. Both coatings improved the tribological performance of 316L steel in the saline solution. Specifically, the addition of Cr and Si into ZrCN coating results in a decrease of the wear rate of about 60%.
Original languageEnglish
Pages (from-to)158-169
Number of pages12
JournalProceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
Volume233
Issue number1
DOIs
Publication statusPublished - 1 Jan 2019

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corrosion
arcs
Vacuum
Corrosion
coatings
Coatings
vacuum
corrosion resistance
Corrosion resistance
modulus of elasticity
hardness
Elastic moduli
Hardness
Caustics
Steel
mass flow rate
Stainless Steel
Corrosion protection
Substrates
Phase composition

Keywords

  • corrosion
  • friction and wear
  • microstructure
  • ZrCN and Zr–Cr–Si–C–N coatings

Cite this

Corrosion and tribological behaviour in a 3.5% NaCl solution of vacuum arc deposited ZrCN and Zr–Cr–Si–C–N coatings. / Constantin, Lidia R.; Parau, Anca C.; Balaceanu, Mihai; Dinu, Mihaela; Vladescu, Alina.

In: Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, Vol. 233, No. 1, 01.01.2019, p. 158-169.

Research output: Contribution to journalArticle

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abstract = "{\circledC} IMechE 2018. ZrCN and Zr–Cr–Si–C–N coatings were deposited on Si (100) and 316L stainless steel substrates using the cathodic vacuum arc technique in a mixed atmosphere of C 2 H 2 and N 2 . The coatings were grown keeping almost constant the ratio of the C 2 H 2 and N 2 mass flow rates, substrate bias and deposition temperature at ∼0.81, −200 V and 320 ℃, respectively. The investigation carried out aimed to determine the corrosion and tribological performance of the novel Zr–Cr–Si–C–N coating obtained by Cr and Si addition to the ZrCN reference coating. The films were characterized in terms of elemental and phase composition, crystalline structure, hardness, reduced elastic modulus and adhesion. Particular attention was devoted to the investigation of coatings' corrosion resistance and tribological performance carried out in a 3.5{\%} NaCl solution. Cr and Si addition to ZrCN coating leads to reduction in film crystallinity, finer microstructure, enhanced corrosion resistance and better tribological performance under corrosive testing conditions. In this paper, we discuss the measured mechanical and tribological properties of the two coatings in terms of various ratios of hardness and reduced elastic modulus. The coated samples exhibited high corrosion protection efficiency, reaching 97.8{\%} for the Zr–Cr–Si–C–N coating. Both coatings improved the tribological performance of 316L steel in the saline solution. Specifically, the addition of Cr and Si into ZrCN coating results in a decrease of the wear rate of about 60{\%}.",
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