Comparison of the scuffing behaviour and wear resistance of candidate engineered coatings for automotive piston rings

Wan, Shanhong; Li, Dongshan; Zhang, Guang An; Tieu, Anh Kiet; Zhang, Chao

doi:10.1016/j.triboint.2016.10.026

Cited by 55 publications

(27 citation statements)

References 40 publications

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“…The weight loss, Δw for each specimens have recorded and wear rate was converted to volume loss VL (mm 3 ) by dividing the weight loss to density, ρ (kg/mm3) and the time, t (s) as mention in (1) [14]. 1Furthermore, to calculate the specific wear rate (SWR) for determining the wear result [15,16] have used (2);…”

Section: Methodsmentioning

confidence: 99%

Dry Sliding Wear Behaviour of Rheocat Al-5.7si-2cu-0.3mg Alloy

Abdelgnei

Omar²,

Ghazali³

et al. 2018

IJET

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In this study, the effect of improved microstructure of Al-5.7Si-2Cu-0.3Mg alloys by using semisolid process on hardness and dry sliding wear behaviour were investigated. The microstructures of conventional cast alloy were totally dendritic, while in rheocasting the dendritic transfer to fine globular microstructures after using cooling slope casting. Tribological tests were carried out by using a pin-on-disc apparatus in dry sliding conditions. Wear tests were at low sliding speed 1ms-1 ,applied load at 50N and three different sliding distance (i.e., 1.8Km, 5.4Km and 9Km) respectively. An optical microscope and a scanning electron microscope were used to examine the microstructure and to understand the wear mechanism on the worn surface of both samples. The results showed that, the wear resistance of rheocast alloy was improved and higher than that those produce by conventional casting. The volume loss of rheocast alloy show reduction more than 18% at 1.8Km and 10% at 9Km compared to as-cast alloy. Moderate wear regimes were appeared in both alloys, according to the range of wear rate. The friction coefficient had increased due to increase in the contact point between pin and disc materials. The dominant wear mechanism for conventional and rheocasting alloys was adhesion wear and abrasive wear respectively.

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Section: Methodsmentioning

confidence: 99%

Dry Sliding Wear Behaviour of Rheocat Al-5.7si-2cu-0.3mg Alloy

Abdelgnei

Omar²,

Ghazali³

et al. 2018

IJET

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“…[48] Ceramic layers and hard amorphous carbon are integrated to produce scuffing resistance and durability. It is efficient in managing scuffing problem besides being reliable and provides robustness to the piston rings.…”

Section: Durabilitymentioning

confidence: 99%

Efficiency of Nano Ceramic Coated and Turbocharged Internal Combustion Engine- A Review

Diaz¹

2017

JAMES

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Thermal Barrier Coating (TBC) often denotes the ceramic/Nano ceramic insulation layered to the surface of the engine or any other parts to enhance the thermal insulation characteristics by increasing efficiency and minimizing the need of cooling system. Above all, load and speed of the engine is optimized with respect to output power, volumetric efficiency and exhaust control. Insulation of combustion chamber with ceramic enhances its efficiency and it is also significant in terms of pollution control and fatigue lifespan. On account of these, this article reviews a list of papers that contribute in studies, where the influence of nano ceramic coating and the use of turbocharging mechanism in optimization of engine performance are described.

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“…In this work, we investigate two types of non-ferrous coating (PVD-CrN and PVD-CrN + GLC 18 , 19 ), and evaluate the cooperative action of non-ferrous surfaces and lubricant additives by friction tests. In order to illustrate tribofilm kinetics, the influence of lubricant quantity was evaluated to understand sliding under conditions ranging from fully lubricated through to oil-starved lubrication, where the lubricating condition became increasingly scarce over a small quantity of lubricant in this work.…”

Section: Introductionmentioning

confidence: 99%

Tribochemistry of adaptive integrated interfaces at boundary lubricated contacts

Wan

Xia

Wang

et al. 2017

Sci Rep

Self Cite

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Understanding how an adaptive integrated interface between lubricant additives and solid contacts works will enable improving the wear and friction of moving engine components. This work represents the comprehensive characterization of compositional and structural orientation at the sliding interface from the perspective of surface/interface tribochemistry. The integrated interface of a lubricant additive-solid resulting from the friction testing of Graphite-like carbon (GLC) and PVD-CrN coated rings sliding against cast iron under boundary lubrication was studied. The results indicate that in the case of the CrN/cast iron pair the antiwear and friction behavior were very strongly dependent upon lubricant. In contrast, the tribology of the GLC surface showed a much lower dependence on lubrication. In order to identify the compounds and their distribution across the interface, x-ray microanalysis phase mapping was innovatively applied and the principle of hard and soft acids and bases (HSAB) to understand the behaviour. Phase mapping clearly showed the hierarchical interface of the zinc-iron polyphosphate tribofilm for various sliding pairs and different sliding durations. This interface structure formed between lubricant additives and the sliding surfaces adapts to the sliding conditions – the term adaptive interface. The current results help explain the tribology of these sliding components in engine.

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Comparison of the scuffing behaviour and wear resistance of candidate engineered coatings for automotive piston rings

Cited by 55 publications

References 40 publications

Dry Sliding Wear Behaviour of Rheocat Al-5.7si-2cu-0.3mg Alloy

Dry Sliding Wear Behaviour of Rheocat Al-5.7si-2cu-0.3mg Alloy

Efficiency of Nano Ceramic Coated and Turbocharged Internal Combustion Engine- A Review

Tribochemistry of adaptive integrated interfaces at boundary lubricated contacts

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