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Effect of Magnetic Treatment on the Microstructure and Abrasive Resistance of WC–Co Detonation-Sprayed Coatings.

† V.Oliker,
 
T.Ya.☨Gridasova,
 
I.Timofeeva,
 
E.Grechishkin,
 
A.G.Gavrilenko
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2012, #05/06
http://www.materials.kiev.ua/article/1043

Abstract

The effect of magnetic field on the phase composition and mechanical properties of detonation-sprayed coatings from VK-9 and VK-15 hard alloys is studied. It is established that the magnetic field induces phase and structural transformations in sprayed coatings, such as reinforcement of the Co matrix by dissolution of WC in Co and formation of WxCoyCz binary carbides. Magnetic treatment reduces residual internal stresses in the coating, decreases the amorphicity of its structure, and increases abrasive wear resistance.


ABRASIVE WEAR, DETONATION-SPRAYED COATING, HARD ALLOY, MAGNETIC TREATMENT

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