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Wear and Corrosion Behavior of HVAF Sprayed WC-10Ni and WC-20Cr3C2-6Ni Coatings

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Details

Original languageEnglish
Title of host publicationSurface Modification Technologies XXVIII
Subtitle of host publicationProceedings of the Twenty Eighth International Conference on Surface Modification Technologies
EditorsT.S. Sudarshan, Petri Vuoristo, Heli Koivuluoto
PublisherValardocs
Pages55-65
Volume28
ISBN (Print)978-81-926196-1-3
Publication statusPublished - Jan 2015
Publication typeA4 Article in a conference publication
EventInternational Conference on Surface Modification Technologies - , Finland
Duration: 1 Jan 2000 → …

Conference

ConferenceInternational Conference on Surface Modification Technologies
CountryFinland
Period1/01/00 → …

Abstract

WC-10Ni and WC-20Cr3C2-6Ni coatings deposited by High Velocity Air-Fuel (HVAF) spraying were studied and compared in the present paper. A series of tribological tests and electrochemical measurements were carried out in order to examine the effect of coating composition on the abrasion, sliding wear and corrosion behavior. The experimental results revealed that the overall wear and corrosion resistance of the WC-10Ni coatings was superior to that of WC-20Cr3C2-6Ni due to denser microstructure, high hardness, and fewer microcracks which act in the coatings as infiltration path for the electrolyte. It was found out that the chemical composition, homogeneity and bonding between splats are important factors influencing the corrosion properties and impermeability of HVAF sprayed WC cermet based coatings in 3,5 wt.% NaCl solution.

Publication forum classification

Field of science, Statistics Finland