Corrosion properties of amorphous Mo-Si-N and nanolayered Mo-Si-Nn/SiC coatings

Pauli Torri, Amar Mahiout, Jari Koskinen, Juha-Pekka Hirvonen, L-S. Johansson

Research output: Contribution to journalArticleScientificpeer-review

11 Citations (Scopus)

Abstract

Corrosion properties of sputter deposited MoSi2, SiC, Mo-Si-N (MoSi2.2N2.5) and nanolayered Mo-Si-N/SiC coatings on Fe37 low carbon steel have been studied using electrochemical polarization measurements in 1 N H2SO4 solution. A decrease in both critical current density for passivation and minimum current in passive state was observed in annealed nanolayered Mo-Si-N/SiC coating compared to each of its constituents alone as single layer coating. On contrary to MoSi2 coating, only slight increase in critical current density was observed in Mo-Si-N coated sample after annealing. Molybdenum disilicide source material has good thermal and electrical conductivity, which allows effective dc-magnetron sputter deposition. Therefore this is a relatively simple method to produce amorphous coatings which have a high crystallization temperature and promising properties for corrosion applications
Original languageEnglish
Pages (from-to)609 - 613
Number of pages5
JournalScripta Materialia
Volume42
Issue number6
DOIs
Publication statusPublished - 2000
MoE publication typeA1 Journal article-refereed

Fingerprint

corrosion
Corrosion
coatings
Coatings
critical current
current density
Sputter deposition
low carbon steels
Molybdenum
Low carbon steel
Crystallization
Passivation
passivity
molybdenum
Thermal conductivity
thermal conductivity
Annealing
crystallization
Polarization
electrical resistivity

Cite this

Torri, P., Mahiout, A., Koskinen, J., Hirvonen, J-P., & Johansson, L-S. (2000). Corrosion properties of amorphous Mo-Si-N and nanolayered Mo-Si-Nn/SiC coatings. Scripta Materialia, 42(6), 609 - 613. https://doi.org/10.1016/S1359-6462(99)00407-8
Torri, Pauli ; Mahiout, Amar ; Koskinen, Jari ; Hirvonen, Juha-Pekka ; Johansson, L-S. / Corrosion properties of amorphous Mo-Si-N and nanolayered Mo-Si-Nn/SiC coatings. In: Scripta Materialia. 2000 ; Vol. 42, No. 6. pp. 609 - 613.
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abstract = "Corrosion properties of sputter deposited MoSi2, SiC, Mo-Si-N (MoSi2.2N2.5) and nanolayered Mo-Si-N/SiC coatings on Fe37 low carbon steel have been studied using electrochemical polarization measurements in 1 N H2SO4 solution. A decrease in both critical current density for passivation and minimum current in passive state was observed in annealed nanolayered Mo-Si-N/SiC coating compared to each of its constituents alone as single layer coating. On contrary to MoSi2 coating, only slight increase in critical current density was observed in Mo-Si-N coated sample after annealing. Molybdenum disilicide source material has good thermal and electrical conductivity, which allows effective dc-magnetron sputter deposition. Therefore this is a relatively simple method to produce amorphous coatings which have a high crystallization temperature and promising properties for corrosion applications",
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Torri, P, Mahiout, A, Koskinen, J, Hirvonen, J-P & Johansson, L-S 2000, 'Corrosion properties of amorphous Mo-Si-N and nanolayered Mo-Si-Nn/SiC coatings', Scripta Materialia, vol. 42, no. 6, pp. 609 - 613. https://doi.org/10.1016/S1359-6462(99)00407-8

Corrosion properties of amorphous Mo-Si-N and nanolayered Mo-Si-Nn/SiC coatings. / Torri, Pauli; Mahiout, Amar; Koskinen, Jari; Hirvonen, Juha-Pekka; Johansson, L-S.

In: Scripta Materialia, Vol. 42, No. 6, 2000, p. 609 - 613.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Corrosion properties of amorphous Mo-Si-N and nanolayered Mo-Si-Nn/SiC coatings

AU - Torri, Pauli

AU - Mahiout, Amar

AU - Koskinen, Jari

AU - Hirvonen, Juha-Pekka

AU - Johansson, L-S.

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AB - Corrosion properties of sputter deposited MoSi2, SiC, Mo-Si-N (MoSi2.2N2.5) and nanolayered Mo-Si-N/SiC coatings on Fe37 low carbon steel have been studied using electrochemical polarization measurements in 1 N H2SO4 solution. A decrease in both critical current density for passivation and minimum current in passive state was observed in annealed nanolayered Mo-Si-N/SiC coating compared to each of its constituents alone as single layer coating. On contrary to MoSi2 coating, only slight increase in critical current density was observed in Mo-Si-N coated sample after annealing. Molybdenum disilicide source material has good thermal and electrical conductivity, which allows effective dc-magnetron sputter deposition. Therefore this is a relatively simple method to produce amorphous coatings which have a high crystallization temperature and promising properties for corrosion applications

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