Generation and oxidation of wear debris in dry running tests of diamond coated SiC bearings

Perle, M.; Bareiss, Christian; Rosiwal, Stefan; Singer, Robert F.

doi:10.1016/j.diamond.2005.10.069

Cited by 27 publications

(6 citation statements)

References 13 publications

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“…3b), resulting in the direct contact between SiC particles and friction couples. The high hardness and abrasive properties of SiC particles lead to an increase in the friction coefficient with a significant fluctuation [16,17].The introduction of α-Al 2 O 3 coatings has modified the surface of SiC particles from smooth to rough, as observed in inset images of Fig. 3a and b, which may change the distribution of SiC particles on the as-deposited Ni/CS p composite surfaces.…”

Section: Wear Testsmentioning

confidence: 97%

Friction and Wear Properties of α-Al2O3-Coated SiC Particle Reinforced Nickel Matrix Composites Sliding against Bearing Steel

Xie

2017

SSP

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In this study, attempt has been made to investigate the effect of SiC particles on the friction and wear properties of Ni/SiC composites manufactured by electrodeposition, especially for the composites with high-temperature treatment.For this purpose, α-Al2O3 was coated on the surfaces of SiC particles by sol-gel technology to inhibit interfacial reaction of SiC and nickel at high temperature. Both of the Ni/α-Al2O3-coated SiC (Ni/CSp) and Ni/uncoated SiC (Ni/UCSp) composites were treated at 600 °C to study the resulting wear behaviour. The results indicated that with heat treatment at 600 °C, the Ni/CSp composite had better tribological properties than the Ni/UCSp composite. It was proved that the uncoated SiC particles have reacted completely with nickel leaving many defects, while the coated SiC particles still remained in the Ni/CSp composite hardening the nickel matrix and supporting the counterpart, thus improving the wear resistance of Ni/CSp composite with relatively low friction coefficient and wear mass loss compared to the Ni/UCSp composite.

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Section: Wear Testsmentioning

confidence: 97%

Friction and Wear Properties of α-Al2O3-Coated SiC Particle Reinforced Nickel Matrix Composites Sliding against Bearing Steel

Xie

2017

SSP

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“…Of these investigations, the tribological properties always attract much attention as they play a predominant role in the ultimate performance and lifetime of diamond-coated machining tools or other components [5]. Available studies have revealed that the friction behaviour of diamond films is influenced by many factors, including sliding conditions, such as load [6][7][8] and atmosphere [8][9][10], as well as surface morphology, such as surface roughness [11] and grain size [12]. For a specific tribological application, the working condition is generally determined.…”

Section: Introductionmentioning

confidence: 99%

Effect of surface morphology on the frictional behaviour of hot filament chemical vapour deposition diamond films

Shen

Sun

2009

Proceedings of the Institution of Mechanical Engineers, Part J:

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A novel deposition method combining the conventional hot filament chemical vapour deposition method and the polishing technique is proposed for fabricating ultra-smooth composite diamond (USCD) films onto cobalt cemented tungsten carbide substrates. SEM and AFM investigations show that the deposited USCD films have ultra-smooth and uniform surface, and their surface roughness values are measured by using an AFM and a surface profilometer as Ra∼ 59 and ∼88.8 nm, respectively. The tribological properties of USCD films are examined in comparative friction tests with a microcrystalline diamond (MCD), fine-grained diamond, and polished MCD films, and the effect of surface morphology on the friction behaviour of diamond films is highlighted. Friction tests show that the polished MCD and USCD films exhibit very low friction coefficients of approximately 0.08, 0.12, and 0.17, while dry sliding against counterfaces of alumina ceramic, ball-bearing steel, and copper materials. Intensive interactions between two surfaces of the mating parts result in gradual blunting of the sharp tips of diamond crystallites and accumulation of wear debris on the worn surface of diamond films. Adhered wear debris on the diamond films are supposed to have a significant influence on their frictional behaviour because they will cause increasing adhesive strength between the mating surfaces, and thus a higher friction coefficient for the contact.

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“…Erdemir et al [3] studied the tribological issues posed by smooth diamond films during sliding against Si 3 N 4 counterfaces in ambient air and dry N 2 . Perle et al [4] illustrated the changes in diamond friction and wear influenced by different atmospheres including ambient air, oxygen gas, nitrogen gas and argon gas atmosphere. However, the friction behavior and mechanism of diamond films in water or oil lubrication environment were reported in few available literatures, although Hollman [5] performed friction tests where nanocrystalline diamond coatings were slide against some common materials like stainless steel under distilled water and ployalfaolefin oil lubrication, the detail tribological mechanism of diamond films in water or oil was not given yet.…”

Section: Introductionmentioning

confidence: 99%

Study on Tribological Performance of Fine-Grained Diamond Films

Shen

Zuo

Sun

et al. 2007

KEM

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Friction and wear behavior of fine-grained diamond (FGD) films were investigated in the ambient air, deionized water and paraffin oil lubricating environment. The FGD films were deposited on WC substrates using HFCVD method and the tribologcial tests were conducted in a ball-on-plate type reciprocating friction tester where the mating balls were made of ball-bearing steel. Scanning electron microscopy (SEM), surface profilometer and Raman spectrascropy were used to study the characterizations of the deposited FGD films, and after sliding tests, the worn areas on both mating balls and FGD films were investigated and the wear debris layer adhered to the friction area of FGD films were analyzed with EDX. The experiment results suggested that FGD films exhibited steady friction coefficient as about 0.25 in water, lower than that in open air, which is up to 0.40; but the mating ball in water suffered much severer wear lost and its specific wear rate was more than two times higher than that in air, up to 3.6E-4 mm3N-1m-1. As while, a thick and compact layer of wear debris was observed on the worn area of FGD films sliding with water lubrication while only little debris existed in the diamond grain boundaries, which might dominate the friction process and attribute to the lower friction coefficient and higher specific wear rate in water environment. In oil environment, furthermore, both the friction coefficient and specific wear rate reached minimum value as low as 0.1 and 1.1E-4 mm3N-1m-1, no observable wear scar could be measured on the sliding surface of the FGD film.

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Generation and oxidation of wear debris in dry running tests of diamond coated SiC bearings

Cited by 27 publications

References 13 publications

Friction and Wear Properties of α-Al<sub>2</sub>O<sub>3</sub>-Coated SiC Particle Reinforced Nickel Matrix Composites Sliding against Bearing Steel

Friction and Wear Properties of α-Al<sub>2</sub>O<sub>3</sub>-Coated SiC Particle Reinforced Nickel Matrix Composites Sliding against Bearing Steel

Effect of surface morphology on the frictional behaviour of hot filament chemical vapour deposition diamond films

Study on Tribological Performance of Fine-Grained Diamond Films

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