Analysis of the hardness ratio effect on the tribological performance of NiCrBSi coating/debris particles using the Stribeck Curve
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7034
comunitat-uji-handle3:10234/8619
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INVESTIGACIONMetadatos
Título
Analysis of the hardness ratio effect on the tribological performance of NiCrBSi coating/debris particles using the Stribeck CurveFecha de publicación
2021-12-15Editor
ElsevierISSN
0043-1648Cita bibliográfica
Habib, K. A., Cano, D. L., Heredia, J. A., & Serrano-Mira, J. (2021). Analysis of the hardness ratio effect on the tribological performance of NiCrBSi coating/debris particles using the Stribeck Curve. Wear, 486, 204081.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.sciencedirect.com/science/article/pii/S0043164821004671#!Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
This work aims to propose an approach to estimate the final surface roughness as a function of the hardness ratio between coating and debris (Hpin/Hdebris = Hp/Hd) under lubricated conditions employing pin-on-disc ... [+]
This work aims to propose an approach to estimate the final surface roughness as a function of the hardness ratio between coating and debris (Hpin/Hdebris = Hp/Hd) under lubricated conditions employing pin-on-disc configuration. Using this approach provides a better understanding and prediction of the lubrication regime (Stribeck Curve) compared with the traditional approach that uses the initial surface roughness. Our results demonstrate that a lower hardness ratio induces a higher friction coefficient and contributes to a marked increase in wear rate in lubricated conditions. To find an effective method for simulating the debris effect, four types of NiCrBSi powders were used as a source of debris: two metallic powders with a completely spherical morphology but different Cr concentrations and two other NiCrBSi (15.25%Cr) powders mixed with different concentrations 40 and 60% of ceramic, Zr + 7% Y2O3 (ZSP), composed of spherical particles morphology. Therefore, a set of four sources of debris material specimens were simulated by different types of particles with a similar size distribution but different average hardness. Each of these particles was dispersed in an oil lubricant. Observation of the worn surfaces using a rugosimeter and scanning electron microscope suggested that, together with the shape, size and number of debris, the hardness ratio must be considered when studying the tribological behavior of machine components. The proposed methodology may help to predict the variation in lubrication regime parameters (Stribeck curve) by controlling the hardness ratio. [-]
Publicado en
Wear Volumes 486–487, 15 December 2021, 204081Derechos de acceso
info:eu-repo/semantics/openAccess
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