Wear behaviour of tetrahedral amorphous diamond-like carbon (ta-C DLC) in additive containing lubricants

Tasdemir, Haci Abdullah; Wakayama, Masaharu; Tokoroyama, Takayuki; Kousaka, Hiroyuki; Umehara, Noritsugu; Mabuchi, Yutaka; Higuchi, Tsuyoshi

doi:10.1016/j.wear.2013.08.011

Cited by 68 publications

(3 citation statements)

References 38 publications

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“…The main purpose of using ZDDP in the base oil is to reduce wear of the contact and in this study; the ZDDP-added oil showed approximately 80 per cent lower wear rate of DLC films than that of base oil lubricated case which indicates that the additives played a role in reducing wear of DLC films. The ZDDP-added oil passivates the DLC surfaces in DLC/DLC contact and generates repulsive interaction with each other because of anti-bonding interactions (Abdullah Tasdemir et al , 2013) and thereby reduced wear of DLC films. In addition, the penetration of ZDDP-decomposed elements into the asperities of the sliding surfaces prevents them from coming in contact and thereby reduced the adhesive wear (Yong, 2014; Taylor and Spikes, 2003; Zhang and Spikes, 2016).…”

Section: Resultsmentioning

confidence: 99%

Tribological properties of hydrogen free DLC in self-mated contacts against ZDDP-added oil

Mannan

Sabri

Kalam

et al. 2017

ILT

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Purpose The purpose of this study is to investigate the tribological properties of tetrahedral diamond-like carbon (DLC) films in self-mated contacts in the presence of additivated and non-additivated vegetable oils. DLC films have high practical value due to low friction and low wear properties. On the other hand, vegetable oils are considered to be lubricants for future due to its resource renewability and biodegradability. Sometimes different chemical agents are added to vegetable oils to further improve its tribological properties. Thus, the tribological study of DLC films against additivated oils becomes important. Design/methodology/approach The tribology tests were conducted in a four ball tribo-meter under the boundary lubricated conditions. Findings Ta-C DLC exhibited 80 per cent lower wear rate under Zinc dialkyldithiophosphates (ZDDP)-added oil compared to that of base oil. In contrast, the friction coefficient under additivated oil was slightly higher than the base oil lubricated case. Moreover, the carbonyl band area as well as the viscosity change of ZDDP-added oil was much smaller than that of base oil. Therefore, ZDDP reduced the wear of DLC film and prevented the oxidation of base oil during tribotests. Originality/value This is the first work on the tribological properties of ta-C DLC lubricated with corn oil with and without anti-wear additives.

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Section: Resultsmentioning

confidence: 99%

Tribological properties of hydrogen free DLC in self-mated contacts against ZDDP-added oil

Mannan

Sabri

Kalam

et al. 2017

ILT

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“…There are different types of DLC layers, which differ in composition, method of preparation and properties. One type of DLC layer is a ta-C coating, which has a low coefficient of friction and is wear resistant [9]. Diamond-like tetrahedral amorphous carbon (ta-C) films, which contain no hydrogen and high content of sp 3 bonds, have a very high hardness and elastic modulus (up to 600 GPa) [10].…”

Section: Introductionmentioning

confidence: 99%

EVALUATION OF CHANGES IN THE UTILITY PROPERTIES OF A BASE MATERIAL AFTER THE APPLICATION OF THIN COATINGS OF WC/C, TIC/C AND A CARBON-BASED COATING: Ta-C

Kavánová¹,

Bakalová²,

Svobodová³

et al. 2020

NANOCON 2019 Conference Proeedings

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Tribological coatings are mainly used to reduce adhesive wear, which often leads to the seizure or the formation of cold welds. The low coefficient of friction and good sliding properties make it ideal for applications with low lubrication or even dry running. The result is an ideal way to reduce surface fatigue and tribo-oxidation. Tribological coatings have good sliding properties, a low coefficient of friction and low adhesive wear. Thin layers of WC/C and TiC/C of the MeC/a-C: H coating group were deposited onto the surface of ISO 683/11-70 steel. The third tribological coating deposited on the same substrate was a ta-C coating -a tetrahedral amorphous layer (stoichiometry: sp 3 bonds > 50%). Tribological measurements were performed at a load of 10 N, a rotational speed of 60 rpm, and with a counterpart of ceramic material Al2O3.

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“…Deposition process of DLC can also influence the tribological properties of the coating lubricated with fully formulated oils . Improvements in tribological properties by lubricant additives are being currently examined, mostly using ZnDTP with focus on the formation and structure of boundary film . Other AW and/or extreme pressure additives such as phosphorus and sulfur containing compounds have also been examined .…”

Section: Introductionmentioning

confidence: 99%

Coating‐lubricant combination for improving tribo‐system performance

Minami

Prakash

2014

Lubrication Science

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New tribo‐systems composed of green chemicals have been investigated. Compatibility of friction modifiers with DLC was evaluated by using SRV test machine. A Zn‐free lubricant formulation showed a steady‐state friction coefficient of 0.15 for steel/steel contact. Hydrogenated DLC coating showed similar tribological properties when slid against steel. Interestingly, this lubricant showed low friction coefficient of 0.02 for hydrogen‐free amorphous DLC when slid against steel. A model friction modifier improved the running‐in performance and reduced wear for hydrogen‐free DLC, while it marginally increased steady‐state friction coefficient up to 0.04. The importance of material–lubricant combination and lubrication model has been highlighted. Copyright © 2014 John Wiley & Sons, Ltd.

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Wear behaviour of tetrahedral amorphous diamond-like carbon (ta-C DLC) in additive containing lubricants

Cited by 68 publications

References 38 publications

Tribological properties of hydrogen free DLC in self-mated contacts against ZDDP-added oil

Tribological properties of hydrogen free DLC in self-mated contacts against ZDDP-added oil

EVALUATION OF CHANGES IN THE UTILITY PROPERTIES OF A BASE MATERIAL AFTER THE APPLICATION OF THIN COATINGS OF WC/C, TIC/C AND A CARBON-BASED COATING: Ta-C

Coating‐lubricant combination for improving tribo‐system performance

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