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Tribological properties of solid solution strengthened laser cladded NiCrBSi/WC-12Co metal matrix composite coatings [Elektronski vir]Bergant, Zoran ...NiCrBSi, WC-12Co and NiCrBSi with 30, 40 and 50 wt.% WC-12Co coatings were produced on low carbon steel by laser cladding with an Nd:YAG laser with a multi-jet coaxial cladding-nozzle. The ... microstructure properties after WC-12Co alloying were investigated by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), electron backscatter diffraction (EBSD) and Vickers hardness tests. The resulting microstructures consisted of a γ-Ni and Ni3B matrix, strengthened with Co and W, Ni3Si, CrB, Cr7C3, Cr23C6, WC/W2C phases. In coatings with 30, 40 and 50 wt.% WC-12Co, a solid solution, strengthened multi-matrix NiCrWCo phase formed, which yielded a higher matrix hardness. Wear tests that monitored the friction coefficients were performed with a tribometer that contained a ball-on-disc configuration, Al2O3 counter-body and reciprocal sliding mode at room temperature. The major wear mode on the NiCrBSi coatings without the WC-12Co was adhesive with a high wear rate and visible material loss by flaking, delamination and micro-ploughing. The addition of WC-12Co to the NiCrBSi coating significantly increased the wear resistance and changed the major wear mechanism from adhesion to three-body abrasion and fatigue wear.Source: Materials [Elektronski vir]. - ISSN 1996-1944 (Vol. 15, iss. 1, 2022, str. 1-20)Type of material - e-articlePublish date - 2022Language - englishCOBISS.SI-ID - 92175107
Author
Bergant, Zoran |
Šetina, Barbara |
Felde, Imre, informatika |
Šturm, Roman, 1965- |
Sedlaček, Marko, 1978-
Topics
obraba |
utrjevanje |
lasersko obleganje |
prevleke |
wear |
solid-solution strengthening |
laser cladding |
NiCrBSi |
WC-Co |
coating
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Bergant, Zoran | 26556 |
Šetina, Barbara | 25498 |
Felde, Imre, informatika | |
Šturm, Roman, 1965- | 13026 |
Sedlaček, Marko, 1978- | 26237 |
Source: Personal bibliographies
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