Autors: Kamburov, V. V., Dimitrova, R. B., Kandeva, M. K.
Title: Introduction of Nickel Coated Silicon Carbide Particles in Aluminum Metal Matrix Hardfaced by MIG/TIG Processes on Precoated Flux Layer
Keywords: Wear resistance, Tribology, Aluminium metal matrix composite

Abstract: The aim of the study was to investigate an aluminium metal matrix surface layer hardfaced by shielded gas metal arc welding processes applying either metal inert gas (MIG) or tungsten inert gas (TIG), with standard wire filler onto the precoated flux layer – a baked resistant film containing electroless nickel coated micro/nano SiC particles. During baking, the components of the flux (MgCl2, NaCl, KCl and Na3AlF6) form a low melting eutectic, which: protects the hardfaced surface from oxidation, provides electrical conductance and keeps the particles on the surface during welding, as well as facilitates particles wettability and their interfacial bonding with the molten metal into the weld puddle. The hardfaced layers were studied by NDT, SEM and EDX, as well as nanoindentation and wear resistance tests. The results from the non-destructive radiographic test show lack of imperfections, porosity and slag inclusions only after TIG hardfaced using nano SiC particles. The wear resistance

References

    Issue

    Tribology in Industry, vol. Vol. 40, pp. 73-80, 2018, Serbia, Tribology in Industry, ISSN: 03548996, https://doi.org/10.24874/ti.2018.40.01.06

    Цитирания (Citation/s):
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    Вид: статия в списание, публикация в издание с импакт фактор, публикация в реферирано издание, индексирана в Scopus