Considerations in Ceramic Friction and Wear Measurements

Gates, Richard S.; Yellets, Jeffrey P.; Deckman, Douglas E.; Hsu, Stephen M.

doi:10.1520/stp19697s

Cited by 12 publications

(3 citation statements)

References 4 publications

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“…see references (53) to (56)] and a similar effect has been seen with drysliding alumina in a four-ball tester. This was suppressed by contaminants (57).…”

Section: Seal Behaviourmentioning

confidence: 97%

Mechanical seal face materials

Nau

1997

Proceedings of the Institution of Mechanical Engineers, Part J:

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Mechanical seal face materials are described with an explanation of the properties affecting performance and the significance of surface texture including bi-Gaussian surface statistics. Aspects of seal behaviour attributable to face materials are discussed in detail, including random fluctuations of friction and thermal excursions. Boundary lubrication mechanisms of carbon±graphites and other ceramics are described. The role of tribolayers and transfer layers is highlighted. Failure modes are discussed including structural fracture, surface crazing, pitting and scoring, blistering, solids deposition and`squeal' (`ringing'). Many references are given.

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“…see references (53) to (56)] and a similar effect has been seen with drysliding alumina in a four-ball tester. This was suppressed by contaminants (57).…”

Section: Seal Behaviourmentioning

confidence: 97%

Mechanical seal face materials

Nau

1997

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…This cleaning sequence was shown in Ref. (25) to remove much of the organic contamination from the exposed surfaces of oxide ceramics. Thin silver films of 1 to 2 pm thickness were deposited at room temperature by using an IBAD system.…”

Section: Test Materialsmentioning

confidence: 99%

The Synergistic Effects of Solid and Liquid Lubrication on the Tribological Behavior of Transformation-Toughened ZrO₂Ceramics

Erdemir

Ajayi

Fenske

et al. 1992

Tribology Transactions

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In this study, the authors investiguted the synergtstic effects of liquid and solid lubrication on the tribological behavior of yttriastabilized zirconia (ZrOz) ceramics. Thin :iilverfilm.s I to 2 km thick were produced on ZrOz flats by ion-beam-assisted deposition (IBAD) and used as the solid lubricant. A fully fomulated synthetic oil (polyolester-based) served as the liquid luhricant. Wear tests were perfoyed on a n oscillating-slider wear test machine at temperatures up to 250°C. For the spec@ test conditions explored, it was found that: (a) without any type of lubrication, thr? friction coefficients of ZrQzlZ;-02 test pairs were on the order oj' 0.6, and the average wear rates of pins were in the range of 5 x 10-I to m m 3 .~-I s m -' , depending on the test temperature; (6) the use of solid-lubricant silver films alone reduced the friction coefficients of sliding pairs by factors of two to four, and the wear rates of pins by three orders of magnitude; (c) the use of liquid lubricants reduced the friction coefficients of ZrO2IZrO2 test pairs by a factor of about five and the wear rates of pins by one to two orders of magnitude; and (d) the concurrent use of silver films an,d lubricant oil resulted in the virtual elimination of the wear of both the pins and the flats, and in a signzficant reduction of the friction coefficients at room temperature and at 250°C.

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“…Due to the substantial commercial significance, a very large amount of work has been done in examining wear. Studies have been carried out in essentially two different areas [1]. Some studies have focused on collection of performance data for materials selection while others have been directed towards improving wear resistance by developing a fundamental understanding of the wear mechanisms that occur.…”

Section: Introductionmentioning

confidence: 99%

A Study Wear Behaviour of Induction Hardened 4140 and Carburised 8617H Steels on 1040 Steel

Kusmoko

Crosky

2013

MSF

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This study was undertaken to evaluate the likely effect on the wear rate of changing the pinion material in a rack and pinion steering box from carburised SAE-AISI grade 8617 H steel to induction hardened SAE-AISI grade 4140 steel of the same hardness. Accordingly, pin on disc wear tests were conducted using carburised 8617 H pins and through hardened 4140 pins. The surface hardness of the pins was approximately 60 HRC for both materials. The discs were made of SAE-AISI grade 1040 steel through hardened to a hardness of 45 HRC. The results showed that both the pins and the discs wore more rapidly when the tests were carried out with 4140 pins. The study indicates that the wear rate would be increased on both the rack and the pinion if the pinion material were changed from case hardened 8617 H to induction hardened 4140.

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Considerations in Ceramic Friction and Wear Measurements

Cited by 12 publications

References 4 publications

Mechanical seal face materials

Mechanical seal face materials

The Synergistic Effects of Solid and Liquid Lubrication on the Tribological Behavior of Transformation-Toughened ZrO₂Ceramics

A Study Wear Behaviour of Induction Hardened 4140 and Carburised 8617H Steels on 1040 Steel

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Considerations in Ceramic Friction and Wear Measurements

Cited by 12 publications

References 4 publications

Mechanical seal face materials

Mechanical seal face materials

The Synergistic Effects of Solid and Liquid Lubrication on the Tribological Behavior of Transformation-Toughened ZrO2Ceramics

A Study Wear Behaviour of Induction Hardened 4140 and Carburised 8617H Steels on 1040 Steel

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Product

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The Synergistic Effects of Solid and Liquid Lubrication on the Tribological Behavior of Transformation-Toughened ZrO₂Ceramics