izpis_h1_title_alt

Effect of multi-scale fillers on the tribological behavior of UHMWPE composites in water-lubricated contacts
ID Gangwani, Prashant (Avtor), ID Kovač, Janez (Avtor), ID Emami, Nazanin (Avtor), ID Kalin, Mitjan (Avtor)

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Izvleček
This study investigates the impact of graphite, hexagonal boron nitride and short carbon fibers, acting as micro- and nano-fillers, on the tribological performance of ultra-high-molecular-weight polyethylene (UHMWPE) hybrid composites. The tribological performance is evaluated under boundary-lubrication conditions with distilled water at contact pressures in the range from 5 and 15 MPa. The fillers were found to work synergistically, with the best performance recorded when the compositions incorporated fillers of all scales. The most effective composite, consisting of short carbon fibers, micro-scale graphite, micro-scale hBN and nano-scale hBN, reduced the coefficient of friction by 75 %, reaching a value of 0.06, and the specific wear rate by two orders of magnitude to 2 × 10$^{−7}$ mm$^3$/Nm, compared to pure UHMWPE. The fillers’ size also played an important role. Composites with nano-boron nitride led to 40 % lower friction compared to micro-scale fillers only. However, all the fillers reduced the amount of abrasive wear, especially the boron nitride, as a consequence of the tribochemical reaction between the boron nitride and water at the interface. Additionally, the formation of a transfer film was observed on the steel discs, with only short carbon fibers and graphite contributing to its formation from among the fillers used.

Jezik:Angleški jezik
Ključne besede:multi-scale, fillers, UHMWPE, composites, water, tribology
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Status publikacije:Objavljeno
Različica publikacije:Objavljena publikacija
Leto izida:2024
Št. strani:18 str.
Številčenje:Vol. 196, art. 109669
PID:20.500.12556/RUL-156365 Povezava se odpre v novem oknu
UDK:539.92
ISSN pri članku:0301-679X
DOI:10.1016/j.triboint.2024.109669 Povezava se odpre v novem oknu
COBISS.SI-ID:196211459 Povezava se odpre v novem oknu
Datum objave v RUL:22.05.2024
Število ogledov:85
Število prenosov:49
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
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Gradivo je del revije

Naslov:Tribology international
Skrajšan naslov:Tribol. int.
Založnik:Elsevier
ISSN:0301-679X
COBISS.SI-ID:26558976 Povezava se odpre v novem oknu

Licence

Licenca:CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
Opis:Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:večplastnost, polnila, UHMWPE, kompoziti, voda, tribologija

Projekti

Financer:EC - European Commission
Program financ.:H2020
Številka projekta:860246
Naslov:GreenTRIBOS
Akronim:GreenTRIBOS

Financer:ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
Številka projekta:P2-0231
Naslov:Tribologija

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