Effect of magnetic treatment on the microstructure and abrasive resistance of WC–Co detonation-sprayed coatings

• Published in: Powder metallurgy and metal ceramics Vol. 51; no. 5-6; pp. 345 - 352
• Main Authors: Oliker, V. E., Gridasova, T. Ya, Timofeeva, I. I., Grechishkin, E. F., Gavrilenko, A. G.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01-09-2012; Springer; Springer Nature B.V
• Subjects: Abrasion resistance; Cemented carbides; Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Coatings; Coatings industry; Cobalt; Composites; Detonation; Dissolution; Glass; Magnetic fields; Magnetization; Materials Science; Metallic Materials; Natural Materials; Powder metallurgy; Transformations; hardmetals; magnetic treatment; abrasive wear; detonation-sprayed coating
• ISSN: 1068-1302; 1573-9066
• DOI: 10.1007/s11106-012-9439-9

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