Friction and wear of some engineering materials against hard chromium plating

Gologan, V. F.; Eyre, T.S.

doi:10.1016/0043-1648(74)90100-8

Cited by 15 publications

(8 citation statements)

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“…Under 15 N, the wear rate increases also when sliding against LTC treated steel, due to destabilization of the protective iron oxide layer, which forms at the interface between the contacting bodies. When sliding against hard Cr, mild tribo-oxidation takes place under all the tested loads, as typically observed also by other authors [28]. Table 1): wear rates measured on the stationary polymers when sliding against the rotating AISI 316L cylinder (uncoated), as a function of normal load.…”

Section: Dry Sliding Testsmentioning

confidence: 61%

Sliding contacts for the pharmaceutical industry: failure analysis and dry sliding tests for the replacement of hard Cr on AISI 316L steel

Ceschini

Martini

Rotundo

2015

Tribology International

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Section: Dry Sliding Testsmentioning

confidence: 61%

Sliding contacts for the pharmaceutical industry: failure analysis and dry sliding tests for the replacement of hard Cr on AISI 316L steel

Ceschini

Martini

Rotundo

2015

Tribology International

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“…The e¬ect of variations in the asperity radius could be quanti ed by the results of gure 7. However, as there were insu¯cient data in the work of Gologan & Eyre (1974) and no information on typical asperity radii, accurate quanti cation of the e¬ect is not possible. Note that for p=k c < 2:5 the predicted wear rate is negligible as the ratchetting plastic strain generated in the coating at these pressures is negligibly small.…”

Section: Results Of Wear Analyses (A) Comparison With Experimental Datamentioning

confidence: 99%

“…Gologan & Eyre (1974) measured the wear rate of a chromium ®at pin rubbing against a phosphorus bronze alloy in a pin-on-disc test over a range of applied loads. In their experiments, the pin head had a ®at 30 mm 2 contacting area.…”

Section: Results Of Wear Analyses (A) Comparison With Experimental Datamentioning

confidence: 99%

A micromechanics investigation of sliding wear in coated components

Yan

O’Dowd

2000

Proc. R. Soc. Lond. A

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In this work, the wear behaviour of coated components subjected to sliding contact conditions is investigated using a multiscale micromechanics approach. Periodic unitcell-type continuum mechanics models are used to predict localized deformation patterns at the scale of the coating thickness (mesoscale) and the rate of material removal due to repeated sliding contact. To that purpose, realistic contact loads determined at the component level (macroscale) are applied at the mesoscopic level. The results indicate that the deformation of the coating is controlled by the cyclic accumulation of plastic deformation, or ratchetting, at the coating subsurface. Based on a ratchetting failure criterion, a wear equation is proposed and applied to investigate parametrically the in®uence of the principal material, loading and surface roughness parameters on the wear rate. The results reveal that the wear rate increases with contact pressure and depends on coating thickness and the roughness of the counterpart surface. It was also found that a reduction in the friction coe¯cient and an increase in the coating strain hardening behaviour can considerably improve the wear resistance of coated components.

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“…Formation of pits, gorges and diminishing of micro-dimpling is observed along sliding direction. 52,53 The corresponding wear track is shown in Figure 13(b). Further load increment to 60 N as shown in Figure 13(c) accounts for complete dislodging of surface material in the form of delaminated sheets with a significant reduction in spalling and pit formation.…”

Section: Surface Analysismentioning

confidence: 99%

Tribological behavior of chrome-deposited SAE9254 grade steel top compression piston ring under lubrication starvation and mild extreme pressure lubrication

Syed

Wàňi

2019

International Journal of Engine Research

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This article reports tribological studies of piston ring/cylinder liner tribo-contact to evaluate the scuffing failure under dry sliding conditions and its minimization with mild extreme pressure lubrication. The tribological conjugation tested employs a piston ring of SAE9254 grade steel substrate with plasma-sprayed chromium coating of 42 µm and ISO R185220 grade gray cast iron cylinder liner. A conformal, cylinder inscribed in cylindrical cavity contact was ensured to simulate actual dead center reciprocating between piston ring–cylinder liner interface. Tribotests were conducted under dry sliding, simulating lubrication starvation and sliding in extreme pressure additivation blend at a temperature of 200 °C with 10 mm stroke length and reciprocating velocity of 0.2 m s–1. The friction characteristics of the piston ring and cylinder liner samples in cited test conditions were studied as a function of load and continuously monitored throughout the tests. Optimal profilometry was employed for evaluating wear attributes. For surface morphology and allied surface characterization, energy-dispersive X-ray spectroscopy integrated scanning electron microscopy was used. For tribo-chemical interactions and film formation, the tribo-surfaces were further investigated with Raman spectroscopy. ASTM E-384 standard Vickers indentation microhardness and its precedence to tribological characteristics were evaluated. The extreme pressure lubrication is intended to potentially improve the scuffing résistance and optimization of coating material in achieving superior tribological characteristics. Superior lubricity, scuffing resistance and enhanced load-bearing capacity attributes were manifested by EP-PAO10 blend lubrication contrasting the surface deteriorations and scuffing failure ascribed to dry sliding.

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Friction and wear of some engineering materials against hard chromium plating

Cited by 15 publications

References 1 publication

Sliding contacts for the pharmaceutical industry: failure analysis and dry sliding tests for the replacement of hard Cr on AISI 316L steel

Sliding contacts for the pharmaceutical industry: failure analysis and dry sliding tests for the replacement of hard Cr on AISI 316L steel

A micromechanics investigation of sliding wear in coated components

Tribological behavior of chrome-deposited SAE9254 grade steel top compression piston ring under lubrication starvation and mild extreme pressure lubrication

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