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Synergism between bio-based oleate ester and low-concentration ZDDP under reciprocating contacts
ID
Shu, Ju
(
Avtor
),
ID
Espejo, Cayetano
(
Avtor
),
ID
Kalin, Mitjan
(
Avtor
),
ID
Morina, Ardian
(
Avtor
)
PDF - Predstavitvena datoteka,
prenos
(7,75 MB)
MD5: 2E151CBDA125213D73C5FA322431ABF7
URL - Izvorni URL, za dostop obiščite
https://www.sciencedirect.com/science/article/pii/S0301679X24000033
Galerija slik
Izvleček
In this study, a bio-based ester was experimentally tested under a reciprocating contact in terms of the tribological performance to assess the potential of bio-based materials as boundary lubrication additives for low Sulphated Ash, Phosphorus, and Sulphur (SAPS) lubricants. A synergy in tribological performance has been observed when the ethyl oleate was used with a low concentration of ZDDP, showing both lower friction and wear loss, compared to only ethyl oleate or Zinc dialkyldithiophosphates (ZDDP) as single additives in base oil. SEM-EDX and ToF-SIMS analyses confirm that the additive combination of ester and low-concentration ZDDP generates a more evenly distributed tribo-film than that for only ZDDP as an additive. Although the tribo-film thickness of the ester/ZDDP lubricant combination, measured with AFM, issmaller than that for only low- concentration ZDDP, the combination shows superior wear protection ability over ZDDP. Mass spectra from ToF-SIMS show that the main component of the film formed by the additive combination is zinc polyphosphate, while the film generated from low-concentration ZDDP consists of short-chain iron phosphate. It is proposed that the ethyl oleate present in the additive combination alleviates severe shear in the contact, which promotes the formation of a uniform tribo-film composed of glassy zinc polyphosphate. The formed tribo-film enhances the adsorption of ester fragments, improving the tribological performance compared to using only ester as an additive. The obtained results demonstrate the potential of bio-based esters to reduce ZDDP usage and move towards greener lubricants.
Jezik:
Angleški jezik
Ključne besede:
bio-based ester
,
ethyl oleate
,
low-concentration ZDDP
,
reciprocation
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:
Str. 1-11
Številčenje:
Vol. 192, art. 109252
PID:
20.500.12556/RUL-154702
UDK:
539.92:547-326
ISSN pri članku:
0301-679X
DOI:
10.1016/j.triboint.2024.109252
COBISS.SI-ID:
186544643
Datum objave v RUL:
23.02.2024
Število ogledov:
230
Število prenosov:
33
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Objavi na:
Gradivo je del revije
Naslov:
Tribology international
Skrajšan naslov:
Tribol. int.
Založnik:
Elsevier
ISSN:
0301-679X
COBISS.SI-ID:
26558976
Licence
Licenca:
CC BY-NC 4.0, Creative Commons Priznanje avtorstva-Nekomercialno 4.0 Mednarodna
Povezava:
http://creativecommons.org/licenses/by-nc/4.0/deed.sl
Opis:
Licenca Creative Commons, ki prepoveduje komercialno uporabo, vendar uporabniki ne rabijo upravljati materialnih avtorskih pravic na izpeljanih delih z enako licenco.
Sekundarni jezik
Jezik:
Slovenski jezik
Ključne besede:
ester na biološki osnovi
,
etil oleat
,
ZDDP z nizko koncentracijo
,
recipročnost
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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