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Influence of graphite content on the tribological properties of plasma sprayed alumina-graphite coatings
ID
Marcinauskas, Liutauras
(
Avtor
),
ID
Mathew, Jacob Shiby
(
Avtor
),
ID
Milieška, Mindaugas
(
Avtor
),
ID
Aikas, Mindaugas
(
Avtor
),
ID
Kalin, Mitjan
(
Avtor
)
PDF - Predstavitvena datoteka,
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(6,26 MB)
MD5: A7094273C0B9113BCD3CA602EDD3F103
URL - Izvorni URL, za dostop obiščite
https://www.sciencedirect.com/science/article/pii/S2468023023001335
Galerija slik
Izvleček
The main aim of this research was to investigate the influence of graphite as an additive to a plasma-sprayed alumina coating matrix for tribological trends. For the deposition process, pure alumina and alumina with graphite (5%, 10% and 15%) weight percentage powders were used. The graphite-modified alumina coatings were formed on steel substrates by atmospheric plasma spraying using an air-hydrogen plasma. The influence of graphite content on the elemental composition, phase structure, friction coefficient, and specific wear rate was investigated. It was obtained that the addition of graphite enhanced the γ-Al2O3 phase content in the as-sprayed coatings. The highest γ-Al2O3 phase fraction was obtained when the amount of graphite in the feedstock powders was 10 wt.%. The elemental composition results indicated that the concentration of carbon in the alumina-graphite coatings was up to six times lower in comparison to the initial feedstock, and had varied from ∼1.7 to 2.45 wt.%. The incorporation of graphite slightly reduced the friction coefficient of the composite coatings due to the formation of a self-lubricating layer under dry-sliding conditions. The specific wear rates were in the range of ∼10−6 mm3/(Nm) for the alumina-graphite composite coatings, which were similar to the alumina coating, and were an order lower compared to the wear rate of steel.
Jezik:
Angleški jezik
Ključne besede:
plasma spraying
,
aluminium oxide
,
alumina-graphite coatings
,
friction
,
wear resistance
,
raman spectroscopy
Vrsta gradiva:
Članek v reviji
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
FS - Fakulteta za strojništvo
Status publikacije:
Objavljeno
Različica publikacije:
Recenzirani rokopis
Leto izida:
2023
Št. strani:
13 str.
Številčenje:
Vol. 38, art. 102763
PID:
20.500.12556/RUL-144648
UDK:
531.43:539.92
ISSN pri članku:
2468-0230
DOI:
10.1016/j.surfin.2023.102763
COBISS.SI-ID:
144060931
Datum objave v RUL:
07.03.2023
Število ogledov:
382
Število prenosov:
42
Metapodatki:
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Objavi na:
Gradivo je del revije
Naslov:
Surfaces and interfaces
Založnik:
Elsevier
ISSN:
2468-0230
COBISS.SI-ID:
526516249
Sekundarni jezik
Jezik:
Slovenski jezik
Ključne besede:
plazemsko pršenje
,
aluminijev oksid
,
alumina-grafitne prevleke
,
trenje
,
odpornost proti obrabi
,
ramanska spektroskopija
Projekti
Financer:
Drugi - Drug financer ali več financerjev
Program financ.:
Research, Development and Innovation Fund of Kaunas University of Technology
Številka projekta:
PP-88G/19
Financer:
Drugi - Drug financer ali več financerjev
Program financ.:
Internal funding of Lithuanian Energy Institute
Financer:
EC - European Commission
Program financ.:
COST Action - European Regional Development Fund
Številka projekta:
CA15107
Naslov:
MultiComp
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
P2-0231
Naslov:
Tribologija
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