A comparison of the antifouling performance of air plasma spray (APS) ceramic and high velocity oxygen fuel (HVOF) coatings for use in marine hydraulic applications

Biofouling
Richard PiolaScott A Wade

Abstract

Maritime hydraulic components are often exposed to harsh environmental conditions which can lead to accelerated deterioration, reduced function, equipment failure and costly repair. Two leading causes of maritime hydraulic failure are biofouling accumulation and corrosion. This study examined the antifouling performance of three candidate replacement high velocity oxygen fuel (HVOF) coatings relative to the performance of the current baseline air plasma spray (APS) ceramic coating for protection of hydraulic actuators. Following 20 weeks immersion at tropical and temperate field exposure sites, the control APS ceramic accumulated significantly greater levels of biofouling compared to the HVOF coatings. More specifically, the magnitude of growth of real-world nuisance hard fouling observed on in-service hydraulic components (eg calcareous tubeworms and encrusting bryozoans) was significantly greater on the APS ceramic relative to HVOF coatings. Possible explanations for the observed patterns include differences in surface topography and roughness, the electrochemical potential of the surfaces and the colour/brightness of the coatings.

References

Oct 6, 2005·Applied and Environmental Microbiology·Juan Pablo Busalmen, Susana R de Sánchez
Nov 22, 2005·Nature Methods·Jeff W Lichtman, José-Angel Conchello
Dec 21, 2006·Biofouling·Geoffrey SwainMelissa Tribou
Dec 19, 2008·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Gabriela SchauleH-C Flemming
Jan 21, 2010·International Journal of Molecular Sciences·Jean-Philippe Maréchal, Claire Hellio
Feb 26, 2010·Biofouling·A J ScardinoR de Nys
Jan 1, 2008·Biointerphases·Axel RosenhahnMichala E Pettitt
May 24, 2013·Biofouling·Sergey DobretsovChristian R Voolstra
Dec 9, 2014·ACS Applied Materials & Interfaces·Xiaoying ZhuG Julius Vancso
Feb 15, 2017·Scientific Reports·Marnie L FreckeltonMichael G Hadfield
May 17, 2017·Biofouling·L Holly SweatKevin B Johnson

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BETA
scraping
fluorescence microscopy

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Tidbit
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