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Corrosion Studies on Thermally Sprayed Materials for Hexavalent Chromium Replacement

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dc.contributor.advisor Weyant, Christopher M en_US
dc.contributor.author Dey, Ravi en_US
dc.contributor.other Department of Materials Science and Engineering en_US
dc.date.accessioned 2013-05-24T16:38:17Z
dc.date.accessioned 2015-04-24T14:45:05Z
dc.date.available 2013-05-24T16:38:17Z
dc.date.available 2015-04-24T14:45:05Z
dc.date.issued 2012-08-01 en_US
dc.identifier.uri http://hdl.handle.net/1951/60241 en_US
dc.identifier.uri http://hdl.handle.net/11401/70912 en_US
dc.description 178 pg. en_US
dc.description.abstract Electroplated hard chrome (EHC) is used for wear and corrosion resistance applications in many industries. The hexavalent chrome present in the plating baths is a major concern due to its highly carcinogenic behavior. . In addition, EHC has technological problems including micro and macro cracking, inconsistent corrosion protection, long processing time and wide differences in behavior of coatings deposited by different plating houses. Thermally sprayed (TS) cermet coatings with a hard ceramic (e.g. tungsten carbide (WC)) embedded in a ductile matrix (Co, Cr and/or Ni) are being developed as candidates for chrome replacement. Thermal spray techniques, specifically high velocity oxy-fuel (HVOF), provide an environmental friendly method for coating surfaces and are increasingly used for wear, friction and corrosion protection. However, to validate the TS cermets, the issue of interconnected porosity, usually a marked characteristic of TS coatings, needs to be addressed. In this study, the influence of processing parameters on the corrosion performance of HVOF-deposited metallic and cermet coatings has been determined. Electrochemical studies including open circuit potential and cyclic polarization were performed to assess corrosion susceptibility and passivation behavior. The results indicate a strong correlation of processing parameters, in situ particle state and mechanical properties with corrosion behavior. en_US
dc.description.sponsorship This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree. en_US
dc.format Monograph en_US
dc.format.medium Electronic Resource en_US
dc.language.iso en_US en_US
dc.publisher The Graduate School, Stony Brook University: Stony Brook, NY. en_US
dc.subject.lcsh Materials Science en_US
dc.subject.other Corrosion, Electrochemical, Hexavalent, Porosity, Thermal Spray en_US
dc.title Corrosion Studies on Thermally Sprayed Materials for Hexavalent Chromium Replacement en_US
dc.type Dissertation en_US
dc.mimetype Application/PDF en_US
dc.contributor.committeemember Welch, David en_US
dc.contributor.committeemember Fortmann, Charles M en_US
dc.contributor.committeemember Korach, Chad S. en_US


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