The problems of resistance to scuffing of heavily loaded lubricated friction joints with WC/C-coated parts

Michalczewski, R.; Piekoszewski, W.; Tuszyński, W.; Szczerek, M.

doi:10.1108/ilt-01-2012-0001

Cited by 9 publications

(3 citation statements)

References 22 publications

(26 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, MMCs provide higher strength and stiffness than the matrix alloy, excellent wear resistance, and a lower coefficient of thermal expansion (CTE) [1]. Composites similar and similar thin hard coatings [2][3][4] belong to a constantly developing group of advanced materials, the properties of which are superior to those of conventional monolithic materials [5]. Through an appropriate choice of the components of a composite, one is able to effectively control their desired properties and increase functionality [6].…”

Section: Introductionmentioning

confidence: 99%

Tribological Behaviour of Copper-Graphene Composite Materials

Chmielewski

Michalczewski²,

Piekoszewski³

et al. 2016

KEM

View full text Add to dashboard Cite

In the present study, the influence of the volume fraction of graphene on the tribological properties of copper matrix composites was examined. The composites were obtained by the spark plasma sintering technique in a vacuum. The designed sintering conditions (temperature 950°C, pressing pressure 50 MPa, time 15 min) allowed obtaining almost fully dense materials. The tribological behaviour of copper-graphene composite materials was analysed. The tests were conducted using a CSM Nano Tribometer employing ball-on-plate tribosystem. The friction and wear behaviour of copper-graphene composite materials were investigated. An optical microscope, interferometer, and scanning electron microscope were used to analyse the worn surfaces. In friction zone, the graphene acts as a solid lubricant, which results in the increase in the content in the composites positively influencing the tribological characteristics of the steel- Cu-graphene composite.

show abstract

Section: Introductionmentioning

confidence: 99%

Tribological Behaviour of Copper-Graphene Composite Materials

Chmielewski

Michalczewski²,

Piekoszewski³

et al. 2016

KEM

View full text Add to dashboard Cite

show abstract

“…The development of technology has introduced new fabrication methods of surface layers and the improvement of existing solutions to increase anti-wear and anti-seize properties [4]. Surface layers and coatings are required to combine properties such as hardness, shear resistance, cracking resistance and good adhesion to the substrate [5][6][7][8]. The use of PVD (Physical Vapor Deposition) and CVD (Chemical Vapor Deposition) methods in forming coatings is systematically growing [9,10].…”

Section: Introductionmentioning

confidence: 99%

Tribological Properties of a Sliding Joint with an a-C:H:W Coating under Lubrication Conditions with PAO8 Oil and the Addition of 2% MoS2 Nanoparticles

Hadło,

Lubas,

Szczypinski-Sala

et al. 2024

Materials

View full text Add to dashboard Cite

One of the promising methods for improving the durability and reliability of friction joints in combustion engines is the use of thin and hard coatings, including coatings based on amorphous DLC. The a-C:H:W coating was produced using the commercial PVD method. The tested tribological joints were made of AISI 4337 steel and SAE-48 bearing alloy (conformal contact) and AISI 4337 steel and valve shims (non-conformal contact). The contact area was lubricated with SAE 5W40 engine oil and PAO8 oil + 2 wt.% MoS2 nanoparticles. The objective of this work is to explore the influence of PAO8 + MoS2 on the tribological properties of a sliding joint with an a-C:H:W coating and the change in the properties of the oils. In the conformal contact, the lubrication of the a-C:H:W coating with PAO8 + MoS2 caused a significant increase in the friction resistance (than in) as compared to the joints with a quenching and tempering surface layer and lubricated SAE 5W40, while in the non-conformal contact, the lubrication of the a-C:H:W coating with PAO8 + MoS2 caused a decrease in the friction resistance and temperature of the contact area. The joints with the a-C:H:W coating were characterized by higher wear of the SAE-48 bearing alloy, as compared to the joints with the surface layer without coating (lubricated with SAE 5W40 oil—11-fold increase, PAO8 + MoS2—46-fold increase). The wear of valve shims with the a-C:H:W coating was significantly lower as compared to the wear of the commercial version of the valve shims (the difference between joints lubricated with SAE 5W40 oil and PAO8 + MoS2 was 12%, 36% and 29% for unit pressures of 10, 15 and 20 MPa). Lubrication of the a-C:H:W coating with PAO8 oil + MoS2 protected the sliding joints against seizing in non-conformal contact.

show abstract

“…For many engineering materials, further improvement of their properties through a modification of their microstructure, chemical composition, and phase composition, is practically impossible. In this situation, the most effective way of to improve the mechanical properties of various engineering components is the modification of surface properties by the deposition of PVD (Physical Vapour Deposition)/ CVD (Chemical Vapour Deposition) coatings [1,2,3]. The most popular coatings contain Ti or Cr (e.g.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Temperature on Wear Mechanism of the AlCrN Coated Components

Michalak¹,

Michalczewski²,

Osuch-Słomka³

et al. 2016

KEM

View full text Add to dashboard Cite

The aim of the paper was to investigate the temperature effect on the wear mechanism of AlCrN coated components. The coating was deposited by Physical Vapour Deposition process (PVD) on WC/Co substrate. Tribological tests were performed in sliding conditions using high temperature T‑21 tribotester, produced by ITeE-PIB Radom. The tests were performed in a ball-on-disc configuration (Si3N4 ceramic ball), under dry friction conditions at room temperature, 600°C and 750°C. An optical microscope, interferometer, and scanning electron microscope were used to analyse the worn surfaces. Following this study, it was found that wear resistance of the coating AlCrN tribosystem depended on the temperature. The biggest wear was reported at room temperature. At 600°C the intensity of wear of the coating was 4-fold lower, and at 750°C wear was 6-fold lower that at room temperature. High temperature wear resistance of AlCrN coating involves creating protective oxide layer. Performed analysis of structure the surface layer, showed a much higher content of oxygen in wear scar than outside. At high temperatures, friction additional intensified oxidation process thus the amount of oxygen in surface layer increased with temperature. Oxide layer, Al2O3 and Cr2O3 probably, created at high temperature was a barrier to further oxidation of the coating and had very high wear resistance at high temperature.

show abstract

The problems of resistance to scuffing of heavily loaded lubricated friction joints with WC/C-coated parts

Cited by 9 publications

References 22 publications

Tribological Behaviour of Copper-Graphene Composite Materials

Tribological Behaviour of Copper-Graphene Composite Materials

Tribological Properties of a Sliding Joint with an a-C:H:W Coating under Lubrication Conditions with PAO8 Oil and the Addition of 2% MoS2 Nanoparticles

The Effect of Temperature on Wear Mechanism of the AlCrN Coated Components

Contact Info

Product

Resources

About