A comparison of the corrosion behavior of WC-Co-Cr and WC-Co HVOF thermally sprayed coatings by in situ Atomic Force Microscopy (AFM)

Joan M. Perry; Anne Neville; Trevor Hodgkiess

doi:10.1361/105996302770348673

A comparison of the corrosion behavior of WC-Co-Cr and WC-Co HVOF thermally sprayed coatings by in situ Atomic Force Microscopy (AFM)

Joan M. Perry, Anne Neville, Trevor Hodgkiess

School of Engineering & Physical Sciences

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

100 Citations (Scopus)

Abstract

The corrosion behavior of WC-Co-Cr and WC-Co high velocity oxygen fuel (HVOF) sprayed coatings were examined in static saline conditions. Direct current (DC) polarization tests were conducted and the electrochemical corrosion behavior was shown, by in situ atomic force microscopy (AFM) and scanning electron microscopy (SEM), to be complex because of the composite ceramic-metal nature of the coating. The addition of chromium to the matrix greatly enhanced the corrosion resistance of the coating.

Original language	English
Pages (from-to)	536-541
Number of pages	6
Journal	Journal of Thermal Spray Technology
Volume	11
Issue number	4
DOIs	https://doi.org/10.1361/105996302770348673
Publication status	Published - Dec 2002

Keywords

Atomic force microscopy (AFM)
Cermet
Corrosion
Electrochemical

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abstract = "The corrosion behavior of WC-Co-Cr and WC-Co high velocity oxygen fuel (HVOF) sprayed coatings were examined in static saline conditions. Direct current (DC) polarization tests were conducted and the electrochemical corrosion behavior was shown, by in situ atomic force microscopy (AFM) and scanning electron microscopy (SEM), to be complex because of the composite ceramic-metal nature of the coating. The addition of chromium to the matrix greatly enhanced the corrosion resistance of the coating.",

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AB - The corrosion behavior of WC-Co-Cr and WC-Co high velocity oxygen fuel (HVOF) sprayed coatings were examined in static saline conditions. Direct current (DC) polarization tests were conducted and the electrochemical corrosion behavior was shown, by in situ atomic force microscopy (AFM) and scanning electron microscopy (SEM), to be complex because of the composite ceramic-metal nature of the coating. The addition of chromium to the matrix greatly enhanced the corrosion resistance of the coating.

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KW - Corrosion

KW - Electrochemical

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ER -

A comparison of the corrosion behavior of WC-Co-Cr and WC-Co HVOF thermally sprayed coatings by in situ Atomic Force Microscopy (AFM)

Abstract

Keywords

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