Tribocorrosion of UNS S32750 in chloride medium: Effect of the load level

Rodrigo César C. Silva; Ricardo P. Nogueira; Ivan N. Bastos

doi:10.1016/j.electacta.2011.07.077

Tribocorrosion of UNS S32750 in chloride medium: Effect of the load level

Rodrigo César C. Silva, Ricardo P. Nogueira, Ivan N. Bastos

Chemical and Petroleum Engineering

Universidade do Estado do Rio de Janeiro

Research output: Contribution to journal › Article › peer-review

33 Scopus citations

Abstract

The tribocorrosion of UNS S32750 sliding against zirconia counterpart in 3.5% NaCl under 2-10 N load range was investigated. The samples were tested in a pin-on-disk tribometer and the main electrochemical techniques employed were potentiodynamic polarization and zero resistance ammeter. The coefficient of friction appeared to be independent of the load level but dependent of the applied potential. Several and complementary electrochemical results could be clearly divided in two distinct groups, below and above ca 7 N. This behavior indicates that the tribocorrosion regime changes as a result of the coupling between mechanical and electrochemical processes, which was interpreted as a change from an adhesive wear regime to an abrasive and corrosion one for higher load levels.

Original language	British English
Pages (from-to)	8839-8845
Number of pages	7
Journal	Electrochimica Acta
Volume	56
Issue number	24
DOIs	https://doi.org/10.1016/j.electacta.2011.07.077
State	Published - 1 Oct 2011

Keywords

Superduplex stainless steel
Tribocorrosion
Wear
Zero resistance ammeter

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10.1016/j.electacta.2011.07.077

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title = "Tribocorrosion of UNS S32750 in chloride medium: Effect of the load level",

abstract = "The tribocorrosion of UNS S32750 sliding against zirconia counterpart in 3.5% NaCl under 2-10 N load range was investigated. The samples were tested in a pin-on-disk tribometer and the main electrochemical techniques employed were potentiodynamic polarization and zero resistance ammeter. The coefficient of friction appeared to be independent of the load level but dependent of the applied potential. Several and complementary electrochemical results could be clearly divided in two distinct groups, below and above ca 7 N. This behavior indicates that the tribocorrosion regime changes as a result of the coupling between mechanical and electrochemical processes, which was interpreted as a change from an adhesive wear regime to an abrasive and corrosion one for higher load levels.",

keywords = "Superduplex stainless steel, Tribocorrosion, Wear, Zero resistance ammeter",

author = "Silva, {Rodrigo C{\'e}sar C.} and Nogueira, {Ricardo P.} and Bastos, {Ivan N.}",

note = "Funding Information: The authors thank the financial support of FAPERJ, CNPq and Multialloy Company for providing the stainless steel samples. I.N. Bastos is indebt to F. Moura Neto for fruitful discussions.",

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AU - Nogueira, Ricardo P.

AU - Bastos, Ivan N.

N1 - Funding Information: The authors thank the financial support of FAPERJ, CNPq and Multialloy Company for providing the stainless steel samples. I.N. Bastos is indebt to F. Moura Neto for fruitful discussions.

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N2 - The tribocorrosion of UNS S32750 sliding against zirconia counterpart in 3.5% NaCl under 2-10 N load range was investigated. The samples were tested in a pin-on-disk tribometer and the main electrochemical techniques employed were potentiodynamic polarization and zero resistance ammeter. The coefficient of friction appeared to be independent of the load level but dependent of the applied potential. Several and complementary electrochemical results could be clearly divided in two distinct groups, below and above ca 7 N. This behavior indicates that the tribocorrosion regime changes as a result of the coupling between mechanical and electrochemical processes, which was interpreted as a change from an adhesive wear regime to an abrasive and corrosion one for higher load levels.

AB - The tribocorrosion of UNS S32750 sliding against zirconia counterpart in 3.5% NaCl under 2-10 N load range was investigated. The samples were tested in a pin-on-disk tribometer and the main electrochemical techniques employed were potentiodynamic polarization and zero resistance ammeter. The coefficient of friction appeared to be independent of the load level but dependent of the applied potential. Several and complementary electrochemical results could be clearly divided in two distinct groups, below and above ca 7 N. This behavior indicates that the tribocorrosion regime changes as a result of the coupling between mechanical and electrochemical processes, which was interpreted as a change from an adhesive wear regime to an abrasive and corrosion one for higher load levels.

KW - Superduplex stainless steel

KW - Tribocorrosion

KW - Wear

KW - Zero resistance ammeter

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ER -

Tribocorrosion of UNS S32750 in chloride medium: Effect of the load level

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Keywords

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