A method for the tribological testing of thin, hard coatings

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

doi:10.1002/tt.3020090204

Cited by 9 publications

(5 citation statements)

References 22 publications

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“…The tribological behaviours of the DLC coatings were conducted in an air-conditioned room, using a special ball-on-disc tester, known as T-10, intended for precise investigation of thin hard coatings [12,13]. The tester was equipped with a computer-aided specialized system of control and measurements, which made it possible to acquire online data from different transducers.…”

Section: Evaluations Of Coating Propertiesmentioning

confidence: 99%

Characterization and properties of low-friction, multilayered Cr-doped diamond-like carbon coatings prepared by pulse biased filtered cathodic arc deposition

Bujak

Michalczewski

2011

Proceedings of the Institution of Mechanical Engineers, Part J:

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The aim of the article was to investigate the effect of pulsed high-voltage bias on phase composition, surface morphology, mechanical properties, and the tribological performance of the multilayered Cr/CrN/DLC coatings prepared by the filtered cathodic arc deposition (FCAD) process. The coatings were deposited using a laboratory arc source device equipped with two macroparticle filtering systems. All coatings were deposited at substrate temperatures below 200 C. Cr/CrN/DLC multilayered coatings were analysed using X-ray photoelectron spectroscopy, a glow discharge optical emission spectrometry technique, scratch testing, nano-indentation measurements (nano-hardness and Young's modulus), and optical microscopy. Tribological tests employing a ball-on-disc tribosystem were performed in dry friction conditions in an airconditioned room (RH 50 per cent, 23 C). The results proved that the substrate bias voltage exerts a significant influence on the mechanical properties of the Cr/CrN/DLC multilayered coatings by the changing chemical composition of the DLC top layers. With an increase of bias voltage from 2 to 6 kV, the Cr content increases from 2 to 4 per cent and the sp 2 /sp 3 ratio decreases from 1.06 to 0.44. The Cr-doped DLC multilayered coatings were characterized by a very smooth surface, a low friction coefficient (0.13-0.15), moderate hardness (8-11 GPa), and a Young's modulus of 95-130 GPa. Due to the moderate adhesion strength of DLC top layers, their wear resistance was not satisfactory for real applications. In each tribological test, the delaminating process of the DLC layers was observed after approximately 200-300 load cycles. To improve the mechanical properties and adhesion of a DLC layer, the optimization of the transition and DLC layers is achieved by changing the parameters of the physical vapour deposition process.

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Section: Evaluations Of Coating Propertiesmentioning

confidence: 99%

Characterization and properties of low-friction, multilayered Cr-doped diamond-like carbon coatings prepared by pulse biased filtered cathodic arc deposition

Bujak

Michalczewski

2011

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…The investigation of tribological characteristics was performed by means of reciprocating pin on flat testing machine T-17, designed and produced in ITeE-PIB. 25 Using the aforementioned device it is possible to perform tests according to, among others, ASTM F 732-82 standard, related to tribological properties of materials for endoprosthesis.…”

Section: Methodsmentioning

confidence: 99%

Tribological and nanoscale research on model friction couples intended for hip joint prostheses

Kalbarczyk

Michalczewski

Piekoszewski

et al. 2009

Tribology - Materials, Surfaces & Interfaces

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The paper presents the results of tribological and nanoscale research on model friction couples intended for hip joint prostheses. The tribological tests were performed by means of reciprocating pin on plate testing machine. The investigated friction pairs contained plates rubbing against polymer pins. The test plates were made from seven kinds of ceramics containing different concentrations of ZrO 2 and Al 2 O 3 , and two kinds of Co-Cr alloy. The test pins were made from UHMWPE. Tribological tests were performed in conditions of Ringer solution circulation. On the basis of friction force measurements, for each investigated friction couple, the average coefficient of friction was calculated. On the basis of total wear measurements, for each investigated couple, the wear intensity was calculated. Before and after every test, the plates and pins were analysed by means of atomic force microscopy. The difference in plate surface roughness was determined by the results of the atomic force microscopy analyses.It was stated, that in the case of investigated friction joints, working under reciprocating motion, the wear and friction coefficient correlates with the surface roughness of plate specimens. For the plates with higher surface roughness, the lower friction coefficient and also lower UHMWPE pin wear intensity were observed. The friction coefficient and wear intensity were increasing with decreasing surface roughness. The correlation is confirmed by the differences in material transfer process. Considering investigated friction couples, the pin polymer material is smeared on the ceramic plates with the highest surface roughness creating a thin polymer film. In the case of ceramic surfaces with the lowest surface roughness, the strong adhesive bounds are created and some large particles of polymer are transferred to ceramic surface.

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“…─ the more graphitic thin surface layer (Bewilogua and Hofmann 2014). Characterization of the tribological performance (Renman 2012;Sedlaček, Podgornik, and Vižintin 2008) of different coatings is possible with several test methods (Horiuchi et al 2009;Michalczewski et al 2002). The scratch resistance (Zaidi et al 2006) and the adhesion properties (Waseem et al 2014) of the coatings are investigated in this article.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Adhesion Behaviour of Different Underlayered DLC Coated Cold Forming Tool Steel

László

2021

UPjeng

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Mono- and multilayer coatings can be suitable alternatives to traditional bulk materials due to their favorable mechanical properties. Thanks to the ever-evolving coating technology and process, there are a wide variety of coating types today, such as soft, hard, or super-hard coatings that can be made with single or multilayer coatings. Adhesion and damage to coatings is especially important for coated tools, where damage to the coating can reduce tool life and result in deterioration of the surface quality of the product. The coatings were characterized by Calotest layer thickness measurement, AFM assisted roughness measurement and microhardness test. The adhesion test of the different underlayered (TiBN, CrN and TiAlN) DLC coated Böhler K100 forming tool steel is designed with the Mercedes test (Rockwell C Adhesion Test), which is frequently used to classify the layers, and is complemented by instrumented scratch test.

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A method for the tribological testing of thin, hard coatings

Cited by 9 publications

References 22 publications

Characterization and properties of low-friction, multilayered Cr-doped diamond-like carbon coatings prepared by pulse biased filtered cathodic arc deposition

Characterization and properties of low-friction, multilayered Cr-doped diamond-like carbon coatings prepared by pulse biased filtered cathodic arc deposition

Tribological and nanoscale research on model friction couples intended for hip joint prostheses

Investigation of Adhesion Behaviour of Different Underlayered DLC Coated Cold Forming Tool Steel

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