The Paton Welding Journal, 2009, №04



2009 №04 (08)

2009 №04 (10)

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TPWJ, 2009, #4, 43-45 pages  
EFFECT OF THE CENTRIFUGAL THERMAL SPRAYING PROCESS ON PROPERTIES OF SPHERICAL TUNGSTEN CARBIDE PARTICLES


Journal                    The Paton Welding Journal
Publisher                 International Association «Welding»
ISSN                       0957-798X (print)
Issue                       № 4, 2009 (April)
Pages                      43-45
 
 
Authors
V.I. DZYKOVICH
E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
 
 
Abstract
Effect of the centrifugal thermal spraying process on structure, microhardness and stoichiometric composition of spherical tungsten carbide granules was investigated. Comparative analysis of initial spraying materials (ingots) and spherical particles was conducted. It is established that the granulated WC-W₂C particles, having the highest microhardness and wear resistance, can be produced only as a result of remelting of a spraying material.
 
 
Keywords: tungsten carbides, centrifugal spraying, stoichiometric composition, spherical particles, wear-resistant composite coatings, diffractometry
 
 
Received:                23.12.08
Published:               28.04.09
 
 
References
1. Samsonov, G.V., Vitryanyuk, V.N., Chaplygin, F.I. (1974) Tungsten carbides. Kiev: Naukova Dumka.
2. Bely, A.I., Danilchenko, B.V., Goncharenko, V.S. et al. Machine for centrifugal spraying of refractory material rods. USSR author's cert. 1381840. Publ. 15.10.1987.
3. Yushchenko, K.A., Zhudra, O.P., Bily, O.I. et al. Method for manufacturing of granulated refractory materials. Pat. 20516A Ukraine. Publ. 15.07.1997.
4. Samsonov, G.V., Upadkhaj, T.Sh., Neshpor, V.S. (1974) Physical materials science of carbides. Kiev: Naukova
Dumka.
5. ftp:ftp.bam.de/Powder_Cell/pcw23.exe
6. Makhnenko, V.I., Zhudra, A.P., Velikoivanenko, E.A. et al. (2004) Mathematical modelling of the process of manufacture of spherical fused tungsten carbide granules. The Paton Welding J., 2, 2-8.

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