The effect of an alumina counterface on friction reduction of CuO/3Y-TZP composite at room temperature

Song, Jiupeng; Valefi, M.; Rooij, M.B. de; Schipper, Dirk J.; Winnubst, Louis

doi:10.1016/j.wear.2011.08.016

Cited by 16 publications

(8 citation statements)

References 20 publications

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“…, both 3Y‐TZP and 5CuO–TZP show low friction at room temperature. A low COF for 5CuO–TZP and 3Y‐TZP at room temperature and at low loads has been recently discussed and attributed to the formation of a soft aluminum hydroxide layer . When the temperature increases to 200°C, both materials clearly show a high COF.…”

Section: Discussionmentioning

confidence: 97%

“…The particle size of 3Y‐TZP and CuO powder were 64 nm and ≤74 μm, respectively. The processing route and mechanical properties were described in detail elsewhere . Cold‐pressed 5CuO–TZP samples were sintered at 1500°C for 8 h with heating and cooling rate of 2°C/min.…”

Section: Methodsmentioning

confidence: 99%

“…Recently, it has been observed that CuO/Y‐TZP composites show low friction when sliding against alumina at room temperature . Details of the mechanism are discussed elsewhere . Prakash and Celis have investigated lubricity of a wide variety of solid oxides at high temperatures, based on a polarizability approach.…”

Section: Introductionmentioning

confidence: 99%

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High‐Temperature Tribological and Self‐Lubricating Behavior of Copper Oxide‐Doped Y‐TZP Composite Sliding Against Alumina

et al. 2011

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The tribological behavior of 5 wt% copper oxide-doped tetragonal zirconia polycrystal composite has been investigated while it slides against an alumina counterface under high temperature conditions. The effects of load (1, 2.5, and 5 N) and velocity (0.05 and 0.1 m/s) on the wear mechanism have been investigated. The results were compared with undoped zirconia at 595°C. A coefficient of friction (COF) of 0.35 and a specific wear rate less than 10 À6 mm 3 /Nm were obtained at 595°C when copper oxide was added to zirconia. Further, it has been observed that a self-lubricating layer is formed at the interface. Scanning electron microscopy and X-ray photoelectron spectroscopy have been used to investigate the formation of the self-lubricating copper-rich layer at the interface between the disk and counterface materials. The formation of a self-lubricating layer, as well as the wear mechanisms at different operational conditions (load and velocity) are discussed. It appears that plastic deformation of copper-rich phase at higher temperature is responsible for the decrease in friction and wear. J ournal materials. The particle size of 3Y-TZP and CuO powder were 64 nm and 74 lm, respectively. The processing route and mechanical properties were described in detail elsewhere. 20,22 Cold-pressed 5CuO-TZP samples were sintered at 1500°C for 8 h with heating and cooling rate of 2°C/min.The sintered density was measured by immersion in mercury using the Archimedes' method. The sintered disks were polished to a surface roughness (R a ) of <50 nm using a diamond paste. The polished disks were ultrasonically cleaned in ethanol and then annealed at 850°C for 2 h. For comparison, undoped 3Y-TZP and 0.8 mol% (0.5 wt%) 0.5CuO-TZP were prepared and sintered at 1400°C and 1500°C for 2 h, respectively.

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Section: Discussionmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 99%

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High‐Temperature Tribological and Self‐Lubricating Behavior of Copper Oxide‐Doped Y‐TZP Composite Sliding Against Alumina

et al. 2011

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“…During sliding, solid lubricants form a stable lubricating film on the contact surfaces in order to provide a lubricating effect for composites. Song et al [19] investigated the wear and friction behaviors of a CuO/3Y-TZP composite. CuO reacted with Al 2 O 3 and formed CuAl 2 O 4 and CuAlO 2 .…”

Section: Introductionmentioning

confidence: 99%

Microstructure and High-Temperature Wear Performance of FeCr Matrix Self-Lubricating Composites from Room Temperature to 800 °C

et al. 2019

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FeCr matrix high-temperature self-lubricating composites reinforced by Mo, Ag, and CuO were fabricated by the powder metallurgy technique. The tribological behaviors of composites were studied at temperatures up to 800 °C. The CuO content was optimized according to the tribological results. Mo showed an obvious lubricating effect when it converted into MoO3. The bimetallic oxide system formed high-temperature solid lubricants with low shear strength. CuO reacted with MoO3 and formed CuMoO4 and Cu3Mo2O9. The composites showed an increase in the friction coefficient with the increase of CuO. However, the wear rates decreased with the increase of CuO. The critical threshold at which there was a transition of friction coefficients and wear rates from room temperature (RT) to 800 °C was 10 wt.% CuO. The Fe(Cr)-14% Mo-10.5% Ag-10% CuO composite showed the most reasonable high-temperature tribological behaviors. This was ascribed to the synergistic effects of silver, Mo, in situ formed solid lubricants (metal oxides and salt compounds), and the stable oxide film on the worn surfaces. At elevated temperatures, the dominant wear mechanism was oxidation wear.

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“…The room temperature tribological performance of CuO-TZP has been recently studied by Song et al 25 and they suggested that CuO can contribute to the formation of a tribofilm while the CuO-TZP composite is sliding against an alumina countersurface. The self-lubricating behavior of CuO-TZP composite against the alumina countersurface at high temperatures has also been investigated.…”

Section: Introductionmentioning

confidence: 99%

Influence of countersurface materials on dry sliding performance of CuO/Y-TZP composite at 600 °C

Valefi

Pathiraj

Rooij

et al. 2012

Journal of the European Ceramic Society

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The effect of an alumina counterface on friction reduction of CuO/3Y-TZP composite at room temperature

Cited by 16 publications

References 20 publications

High‐Temperature Tribological and Self‐Lubricating Behavior of Copper Oxide‐Doped Y‐TZP Composite Sliding Against Alumina

High‐Temperature Tribological and Self‐Lubricating Behavior of Copper Oxide‐Doped Y‐TZP Composite Sliding Against Alumina

Microstructure and High-Temperature Wear Performance of FeCr Matrix Self-Lubricating Composites from Room Temperature to 800 °C

Influence of countersurface materials on dry sliding performance of CuO/Y-TZP composite at 600 °C

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