Mechanical behaviour and constitutive models of ZDDP tribofilms on DLC coatings using nano-indentation data and finite element modelling

Luis Bartolomé (Avtor), Eva Oblak (Avtor), Mitjan Kalin (Avtor)

Povzetek

The mechanical behaviour of zinc dialkyldithiophosphate (ZDDP) tribofilms on diamond-like carbon (DLC) coatings has been studied by combining the nano-indentation experimental data and finite-element modelling. Different constitutive models, whose analysis was performed using a global algorithm that consists of forward and inverse algorithms, were chosen to establish which of them more accurately predicts the actual mechanical behaviour of the ZDDP tribofilms. A non-homogeneous, dual structure, which was also verified by the local stiffness using the AFM force-modulation mode, was found. Based on the proposed algorithm, the mechanical properties of the ZDDP tribofilms were found, e.g. the elastic modulus E=26 GPa and the yield stress Y=1.55 GPa for the harder component and approximately E=1.65 GPa and Y=0.144 GPa for the softer component.

Ključne besede

DLC coatings;ZDDP;finite-element method;AFM;

Podatki

Jezik:	Angleški jezik
Leto izida:	2016
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UL FS - Fakulteta za strojništvo
UDK:	539.92:531.43:621.89(045)
COBISS:	14342939
ISSN:	0301-679X
Št. ogledov:	547
Št. prenosov:	465
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	DLC prevleke;metoda končnih elementov;mazanje;tribologija;
Vrsta dela (COBISS):	Članek v reviji
Konec prepovedi (OpenAIRE):	2019-11-07
Strani:	str. 19-26
Zvezek:	ǂVol. ǂ95
Čas izdaje:	Mar. 2016
DOI:	10.1016/j.triboint.2015.10.036
ID:	11053097