Tribological Characterization of Polyether Ether Ketone (PEEK) Polymers Produced by Additive Manufacturing for Hydrodynamic Bearing Application

The coating materials commonly used in hydrodynamic bearings are the so-called “Babbitt metals” or “white metals”, as defined by ASTM B23-00. Their low Young’s modulus and yield point have encouraged researchers to find new coatings to overcome these limitations. In this paper, the friction and wear...

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Autores principales: Davide Massocchi, Giacomo Riboni, Nora Lecis, Steven Chatterton, Paolo Pennacchi
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Lenguaje:EN
Publicado: MDPI AG 2021
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Acceso en línea:https://doaj.org/article/3aa170515da5448795d75cd88d858f1a
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spelling oai:doaj.org-article:3aa170515da5448795d75cd88d858f1a2021-11-25T18:11:56ZTribological Characterization of Polyether Ether Ketone (PEEK) Polymers Produced by Additive Manufacturing for Hydrodynamic Bearing Application10.3390/lubricants91101122075-4442https://doaj.org/article/3aa170515da5448795d75cd88d858f1a2021-11-01T00:00:00Zhttps://www.mdpi.com/2075-4442/9/11/112https://doaj.org/toc/2075-4442The coating materials commonly used in hydrodynamic bearings are the so-called “Babbitt metals” or “white metals”, as defined by ASTM B23-00. Their low Young’s modulus and yield point have encouraged researchers to find new coatings to overcome these limitations. In this paper, the friction and wear of PEEK are studied in a dry sliding environment (without lubrication) using a ball-on-disk tribometer and compared to those of Babbitt metal. Furthermore, the bond strength tests between PEEK and metals/alloys are evaluated. PEEK polymer samples were obtained from cylindrical rods, manufactured by an innovative process for polymer bonding on bearing surfaces, using additive manufacturing technology. The morphologies of the degraded surfaces were examined using a high-resolution metallurgical optical microscope (OM) and a scanning electron microscope (SEM). The coefficients of friction (CoF) were obtained under the alternating ball-on-disk dry tribometer. The results of the experimental activity show that PEEK polymers have CoFs of about 0.22 and 0.16 under the 1 and 5 N applied load, respectively. The CoF and wear volume loss results are reported and compared to the reference Babbitt coating.Davide MassocchiGiacomo RiboniNora LecisSteven ChattertonPaolo PennacchiMDPI AGarticlehydrodynamic bearingsPEEK polymersadditive manufacturingdry slidingball-on-disktribologyScienceQENLubricants, Vol 9, Iss 112, p 112 (2021)
institution DOAJ
collection DOAJ
language EN
topic hydrodynamic bearings
PEEK polymers
additive manufacturing
dry sliding
ball-on-disk
tribology
Science
Q
spellingShingle hydrodynamic bearings
PEEK polymers
additive manufacturing
dry sliding
ball-on-disk
tribology
Science
Q
Davide Massocchi
Giacomo Riboni
Nora Lecis
Steven Chatterton
Paolo Pennacchi
Tribological Characterization of Polyether Ether Ketone (PEEK) Polymers Produced by Additive Manufacturing for Hydrodynamic Bearing Application
description The coating materials commonly used in hydrodynamic bearings are the so-called “Babbitt metals” or “white metals”, as defined by ASTM B23-00. Their low Young’s modulus and yield point have encouraged researchers to find new coatings to overcome these limitations. In this paper, the friction and wear of PEEK are studied in a dry sliding environment (without lubrication) using a ball-on-disk tribometer and compared to those of Babbitt metal. Furthermore, the bond strength tests between PEEK and metals/alloys are evaluated. PEEK polymer samples were obtained from cylindrical rods, manufactured by an innovative process for polymer bonding on bearing surfaces, using additive manufacturing technology. The morphologies of the degraded surfaces were examined using a high-resolution metallurgical optical microscope (OM) and a scanning electron microscope (SEM). The coefficients of friction (CoF) were obtained under the alternating ball-on-disk dry tribometer. The results of the experimental activity show that PEEK polymers have CoFs of about 0.22 and 0.16 under the 1 and 5 N applied load, respectively. The CoF and wear volume loss results are reported and compared to the reference Babbitt coating.
format article
author Davide Massocchi
Giacomo Riboni
Nora Lecis
Steven Chatterton
Paolo Pennacchi
author_facet Davide Massocchi
Giacomo Riboni
Nora Lecis
Steven Chatterton
Paolo Pennacchi
author_sort Davide Massocchi
title Tribological Characterization of Polyether Ether Ketone (PEEK) Polymers Produced by Additive Manufacturing for Hydrodynamic Bearing Application
title_short Tribological Characterization of Polyether Ether Ketone (PEEK) Polymers Produced by Additive Manufacturing for Hydrodynamic Bearing Application
title_full Tribological Characterization of Polyether Ether Ketone (PEEK) Polymers Produced by Additive Manufacturing for Hydrodynamic Bearing Application
title_fullStr Tribological Characterization of Polyether Ether Ketone (PEEK) Polymers Produced by Additive Manufacturing for Hydrodynamic Bearing Application
title_full_unstemmed Tribological Characterization of Polyether Ether Ketone (PEEK) Polymers Produced by Additive Manufacturing for Hydrodynamic Bearing Application
title_sort tribological characterization of polyether ether ketone (peek) polymers produced by additive manufacturing for hydrodynamic bearing application
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/3aa170515da5448795d75cd88d858f1a
work_keys_str_mv AT davidemassocchi tribologicalcharacterizationofpolyetheretherketonepeekpolymersproducedbyadditivemanufacturingforhydrodynamicbearingapplication
AT giacomoriboni tribologicalcharacterizationofpolyetheretherketonepeekpolymersproducedbyadditivemanufacturingforhydrodynamicbearingapplication
AT noralecis tribologicalcharacterizationofpolyetheretherketonepeekpolymersproducedbyadditivemanufacturingforhydrodynamicbearingapplication
AT stevenchatterton tribologicalcharacterizationofpolyetheretherketonepeekpolymersproducedbyadditivemanufacturingforhydrodynamicbearingapplication
AT paolopennacchi tribologicalcharacterizationofpolyetheretherketonepeekpolymersproducedbyadditivemanufacturingforhydrodynamicbearingapplication
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