WEAR RESISTANT POWDER COATINGS ON THE BASE OF RECYCLED HARDMETAL

Tungsten carbide-cobalt (WC-Co) hardmetal powder produced from recycled hardmetal was used as a basic component to produce composite coatings. Spray powders, (WC-Co) in the milled condition, mixed and agglomerated/sintered with Co, were used. Sprayed coatings from (WCCo) hardmetal powder were deposi...

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Published inPowder Metallurgy Progress Vol. 4; no. 3; pp. 148 - 157
Main Authors Tarbe, R, Zimakov, S, Mikli, V, Kulu, P, Veinthal, R
Format Journal Article
LanguageEnglish
Published 01.01.2004
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Summary:Tungsten carbide-cobalt (WC-Co) hardmetal powder produced from recycled hardmetal was used as a basic component to produce composite coatings. Spray powders, (WC-Co) in the milled condition, mixed and agglomerated/sintered with Co, were used. Sprayed coatings from (WCCo) hardmetal powder were deposited by detonation gun spraying and high velocity oxy fuel spraying systems. Spray powder particles and sprayed coatings were studied by the SEM, the elemental composition of coatings was studied by the EDS. The coatings studied were tested for abrasion and abrasive-erosion. The relative wear resistance of coatings from agglomerated/sintered powder by abrasion was about five times higher than that of a non-coated steel substrate; the abrasive-erosion wear resistance of experimental coatings was about three times that of the reference material but lower than coatings from an analogous commercial powder.
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ISSN:1335-8987