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Enhanced DLC wear performance by the presence of …

Enhanced DLC wear performance by the presence of lubricant additives . Romina Paula de Castro Costa I *; Fernanda Roberta Marcian I,II; Deiler Antônio Lima Oliveira I; Vladimir Jesus Trava-Airoldi I. I Instituto Nacional de Pesquisas Espaciais – INPE, Avenida dos Astronautas 1758, CP 515, São José dos Campos, SP, Brazil II UNIVAP – Universidade do Vale do Paraíba, Avenida Shishima ...

(PDF) Tribology of polypropylene and Li-complex …

ZDDP and MoDTC as LCG additives could strongly enhance anti-wear performances [20]. In the development of LCG thus far, it has possessed the advantages of high dropping point, wide temperature ...

Understanding the Friction Reduction Mechanism …

2019-12-10 · Among friction modifier lubricant additives, molybdenum dialkyldithiocarbamate (MoDTC) provides excellent friction behavior in boundary lubricated tribocontacts. It is well established that the low friction obtained with MoDTC is as a result of the formation of lattice structure MoS2 nanosheets. However, the relationship between the molybdenum species quantity, its distribution on the contact ...

Understanding the Friction Reduction Mechanism …

2018-10-22 · Among friction modifier lubricant additives, molybdenum dialkyldithiocarbamate (MoDTC) provides excellent friction behavior in boundary lubricated tribocontacts. It is well established that the low friction obtained with MoDTC is as a result of the formation of lattice structure MoS2 nanosheets. However, the relationship between the molybdenum species quantity, its distribution on the contact ...

Tribology Online - JST

+ MoDTC + ZDDP, and the film thickness behavior differed depending on the lubricant type. 3.3 In situ Raman analytical results Figure 9 shows in situ Raman spectra for PAO + MoDTC, PAO + ZDDP, and PAO + MoDTC + ZDDP, and Fig. 10 shows the peak assignment of the representative Raman spectra for them. The Raman spectra were obtained at the center ...

Wear Mechanisms of Hydrogenated DLC in Oils …

ZDDP could also act as an oxidation inhibitor [ 21, 25, 26 ] and hinder the formation of MoOx (a possible cause of DLC brittleness in MoDTC-containing oils [ 5 ]) or promotes the formation of iron sulphide leading to a reduction of the iron oxide formation.

MoDTC Tribochemistry in Steel/Steel and …

This work focuses on the tribochemistry of molybdenum dithiocarbamate (MoDTC) oil additive to improve friction behavior of diamond-like-carbon (DLC) coated systems lubricated in boundary regime. Raman microscopy has been used to investigate surface tribolayers formed on coated (hydrogenated a-C:H and non-hydrogenated ta-C) and steel surfaces ...

MoDTC Tribochemistry in Steel/Steel and …

In-situ reflection-XANES study of ZDDP and MoDTC …

In-situ reflection-XANES study of ZDDP and MoDTC lubricant films formed on steel and diamond like carbon (DLC) surfaces . By A Morina, H Zhao and JFW Mosselmans. Get PDF (957 KB) Abstract. Chemical characterisation of boundary lubricated interfaces is essential for developing mechanistic models that describe lubricant additive interactions with ...

In-situ reflection-XANES study of ZDDP and MoDTC …

Chemical characterisation of boundary lubricated interfaces is essential for developing mechanistic models that describe lubricant additive interactions with the surface and their effect on tribological performance. In this study the potential for using the synchrotron-based reflection mode X-ray absorption spectroscopy (XAS) technique for in-situ chemical characterisation of lubricant films ...

In-situ reflection-XANES study of ZDDP and MoDTC …

The impact of organic friction modifiers on engine oil ...

A. Morina and A. Neville, Understanding the composition and low friction tribofilm formation/removal in boundary lubrication, Tribol. Int., 2007, 40, 1696–1704 CrossRef CAS PubMed. A. Morina, A. Neville, M. Priest and J. H. Green, ZDDP and MoDTC interactions in boundary lubrication – the effect of temperature and ZDDP/MoDTC ratio, Tribol.

Boundary Lubrication Mechanisms of Molybdenum …

Molybdenum (Mo) film is deposited by Ion Beam Assisted Deposition (IBAD) on the 316L steel substrate surface in this experiment. The micro structure and nanohardness of the film are tested by Scanning Electronic Microscope (SEM) and nanoindentation tester. The tribological behaviors of Mo film under ZDDP and MoDTC lubrication are evaluated by SRV test machine.

Ethoxylated Amine Friction Modifiers and ZDDP | …

The influence of a series of Ethomeens (ethoxylated alkylamine organic friction modifiers) on the durability and friction of tribofilms formed by a commercial blend of primary and secondary ZDDP in sliding/rolling contact has been studied. When pre-formed ZDDP tribofilms are rubbed in Ethomeen solution, boundary friction is reduced and some of the ZDDP film is removed.

A. Morina | Semantic Scholar

Semantic Scholar profile for A. Morina, with 87 highly influential citations and 142 scientific research papers. ... ZDDP and MoDTC interactions in boundary lubrication—The effect of temperature and ZDDP/MoDTC ratio. A. Morina, A. Neville, ...

ZDDP and MoDTC interactions and their effect on ...

Other studies were performed by Morina et al. [14] [15] [16] with the aim to explain the function of lubricant additive packages (ZDDP and MoDTC) and the mechanism of their interactions and to ...

The role of surface roughness and slide-roll ratio on …

2017-2-1 · Morina A, Neville A, Priest M and Green J H 2006 ZDDP and MoDTC interactions in boundary lubrication—the effect of temperature and ZDDP/MoDTC ratio Tribol. Int. 39 1545–57 Crossref

Transient processes of MoS2 tribofilm formation …

Yasir Al-Jeboori, Shahriar Kosarieh, Ardian Morina, Anne Neville, Investigation of pure sliding and sliding/rolling contacts in a DLC/Cast iron system when lubricated in oils containing MoDTC-Type friction modifier, Tribology International, 10.1016/j.triboint.2018.02.015, 122, (23-37), (2018).

CiNii 論文 - Friction Modelling in Boundary Lubrication ...

Friction Modelling in Boundary Lubrication Considering the Effect of MoDTC and ZDDP in Engine Oils Roshan Rupesh , Priest Martin , Neville Anne , Morina Ardian , Xia Xin , Warrens Chris P. , Payne Marc J. Tribology Online 6(7), 301-310, 2011