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Curi, Elvys Isaías Mercado
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Publications (6/6 displayed)
- 2023Effect of tungsten carbide reinforcement phase on the abrasive wear performance of metal matrix composites deposited by laser claddingcitations
- 2022Tribological performance of Ni-Cr-B-Si coatings deposited via laser cladding processcitations
- 2021Laser remelting of WC-CoCr surface coated by HVOF: Effect on the tribological properties and energy efficiencycitations
- 2020Abrasion resistance of Ni-Cr-B-Si coating deposited by laser cladding processcitations
- 2018Avaliação tribológica de óleos hidráulicos biodegradável e mineral com deslizamento entre as ligas de Cu-Zn e WC-CoCrcitations
- 2018A Comparison of Microstructural, Mechanical and Tribological Properties of WC-10Co4Cr - HVOF Coating and Hard Chrome to Use in Hydraulic Cylinderscitations
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article
Abrasion resistance of Ni-Cr-B-Si coating deposited by laser cladding process
Abstract
i-Cr-B-Si alloy deposited by laser cladding has its tribological performance evaluated. Deposition parameters selection is a difficult task. In this work, Ni-Cr-B-Si coatings were deposited by a fiber laser source with a coaxial powder nozzle on low carbon steel substrate. Microstructure, microhardness and abrasive wear tests were performed. Results showed coatings with good surface adhesion. Microhardness was 10% higher in coatings with higher concentration and phase size of chromium carbides. Volumetric loss and wear coefficient showed 10% variation between the coatings. Coatings with different thermal gradients showed different dilution levels, affecting their abrasion resistance. The better tribological performance was obtained for coatings with lower cooling cracks density and higher volumetric fraction of carbides, which both mitigated wear micromechanism action.