Effect of temperature on friction and wear behaviour of CuO–zirconia composites

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

doi:10.1016/j.jeurceramsoc.2012.02.006

Cited by 20 publications

(14 citation statements)

References 37 publications

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“…Due to the effect of Ag and Ag 2 MoO 4 , the wear and friction of the composites with silver further decreased from RT to 800 • C. The mechanical properties of materials also determine the wear rates of materials. The hardness of materials is the most important factor [30]. Materials with a high hardness have low wear rates.…”

Section: High-temperature Tribological Propertiesmentioning

confidence: 99%

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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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Section: High-temperature Tribological Propertiesmentioning

confidence: 99%

“…The mechanical properties of materials also determine the wear rates of materials. The hardness of materials is the most important factor [30]. Materials with a high hardness have low wear rates.…”

Section: High-temperature Tribological Propertiesmentioning

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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“…The fracture toughness was obtained using an indentation-strength method using the formula given by Anstis et al 30 More details about fracture toughness measurements can be found in our previous work. 27 Some of the physical and mechanical properties of the materials used in this study are listed in Table 1.…”

Section: High Temperature Tribological Experiments and Characterizationmentioning

confidence: 99%

“…The mechanism of formation of copper rich layer at the contact interface has been detailed and presented schematically (Figure 12 in 26 ) in our previous publications. 26,27 This layer provides lubrication and reduces the COF (Table 2) and specific wear rate (Table 3). It has also been shown that formation of copper rich layer at the contact interface depends on the contact condition such as load and temperature.…”

Section: Wear Mechanismmentioning

confidence: 99%

“…The details of the wear mechanism in CuO-TZP/alumina system has been discussed elsewhere. 26,27 It is not clear whether the self-lubricating performance of CuO-TZP varies with the countersurface materials used. There are only a few studies in which the role of the countersurface on high temperature tribological performance of self-lubricating composites has been investigated.…”

Section: Introductionmentioning

confidence: 99%

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