Tribological properties of adaptive NiCrAlY–Ag–Mo coatings prepared by atmospheric plasma spraying

Chen, Jie; An, Yulong; Yang, Jie; Zhao, Xinqing; Yan, Fengyuan; Zhou, Huaiying

doi:10.1016/j.surfcoat.2013.08.012

Cited by 92 publications

(40 citation statements)

References 26 publications

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“…To confirm this, the phase compositions of AM were determined via a laser Raman spectrometer ( Figure 4). Monoclinic silver molybdate with a broad peak can be detected with Raman spectra [2,[11][12][13]. We inferred that silver molybdate indeed formed during the preparation process.…”

Section: Composition and Microstructurementioning

confidence: 74%

“…Ag2O and MoO3 can be found on the worn surfaces, respectively, of A and M. In addition, the Ag2MoO4 phase is detected on the worn surface after the sliding process of AM. It has been inferred that silver molybdate can be combined via tribo-reaction between MoO3 and Ag on high-energy-contacted surfaces during RT wear tests [2,11]. Based on the Raman spectra of the sample surfaces, as shown in Figure 9b, before and after the wear test, the peak intensity of Ag2MoO4 increased substantially after the friction test of AM.…”

Section: Friction and Wear Propertiesmentioning

confidence: 98%

“…In order to achieve a low-friction coefficient and wear rate for some harsh-condition applications, numerous works on the lubrication effects about the addition of solid lubricant phases to metal matrices, such as graphite, oxides, soft metals, MoS 2 , and fluoride, have been carried out [1][2][3][4][5][6][7]. Double metal oxides, including titanates, tungstates, molybdate, and vanadates, are effective high-temperature solid lubricants [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…Double metal oxides, including titanates, tungstates, molybdate, and vanadates, are effective high-temperature solid lubricants [8][9][10][11]. Among these double metal oxides, more attention has been paid to silver molybdate, which possesses a layer-like structure, because of its excellent lubrication performance, achieving low friction at high temperatures [2,[9][10][11][12][13][14][15][16][17]. For example, Liu et al [11] investigated the tribological properties of Ni-based self-lubricating composites containing Ag and MoS 2 within a wide temperature range.…”

Section: Introductionmentioning

confidence: 99%

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Friction and Wear Behavior of an Ag–Mo Co-Implanted GH4169 Alloy via Ion-Beam-Assisted Bombardment

et al. 2017

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Ag, Mo, and Ag-Mo were respectively implanted into GH4169 alloy substrates without heating via ion-beam-assisted bombardment technology (IBAB). In addition, the wear performance under low sliding speed and applied load were researched at room temperature (RT). A small amount silver molybdate phase could be detected on the surface of the co-implanted GH4169 alloy bombarded by a high-energy ion beam. The average friction coefficients under the steady wear state had almost no change at all. Compared with the un-implanted GH4169 alloys, the wear rate of the GH4169 alloys with co-implantation of Ag and Mo was reduced by 75%. A large amount of the silver molybdate phase could be generated due to the tribo-reaction on the worn surface during sliding. It benefits the formation of continuous oxide layers as lubrication and protected layers, leading to the change in the predominant wear mechanism from abrasion and adhesion wear to oxidation wear.

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Section: Composition and Microstructurementioning

confidence: 74%

Section: Friction and Wear Propertiesmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Friction and Wear Behavior of an Ag–Mo Co-Implanted GH4169 Alloy via Ion-Beam-Assisted Bombardment

et al. 2017

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“…As is expected, introducing Cr 3 C 2 and Ag additives contributes to the reduction of friction coefficients of the composite coating over the whole temperature range. The friction coefficients of NiMoAl-Cr 3 C 2 -Ag composite coating maintain below 0.3 at all test temperatures except 400°C, which is superior to plasma sprayed lubrication coatings prepared in our laboratory [22,23]. Fig.…”

Section: Characterization Of Feedstock Powders and Sprayed Coatingmentioning

confidence: 61%

Microstructure and tribological property of HVOF-sprayed adaptive NiMoAl–Cr3C2–Ag composite coating from 20 °C to 800 °C

Chen

Zhao

Zhou

et al. 2014

Surface and Coatings Technology

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Tribological properties and lubrication mechanisms of a Ag-Mo composite

et al. 2015

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A composite material containing silver and molybdenum metals was fabricated by powder metallurgy method with a Ag/Mo molar ratio of 2 : 1 and the sintering temperature is 700°C. Tribological properties, especially the solid lubrication behaviours during oxidation of the composite in air, were considered from room temperature to 600°C. Phase composition, microstructure and thermal behaviour of the composite were analysed before and after tests to investigate the lubrication mechanisms. The friction coefficients of the composite are ~0.7 below 400°C but decrease sharply to ~0.18 above 500°C. Characterisations of this composite indicate that several silver molybdates (Ag2MoO4, Ag2Mo2O7 and Ag2Mo4O13) formed from oxidation of Ag–Mo composite at high temperatures benefit lubrication effects and lead to the decrease of friction coefficients. Formation mechanism of these silver molybdates during oxidation and wear was therefore studied, and a model based on solid reaction processes in the Ag–Mo–O2 system was promoted. Copyright © 2015 John Wiley & Sons, Ltd.

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Tribological properties of adaptive NiCrAlY–Ag–Mo coatings prepared by atmospheric plasma spraying

Cited by 92 publications

References 26 publications

Friction and Wear Behavior of an Ag–Mo Co-Implanted GH4169 Alloy via Ion-Beam-Assisted Bombardment

Friction and Wear Behavior of an Ag–Mo Co-Implanted GH4169 Alloy via Ion-Beam-Assisted Bombardment

Microstructure and tribological property of HVOF-sprayed adaptive NiMoAl–Cr3C2–Ag composite coating from 20 °C to 800 °C

Tribological properties and lubrication mechanisms of a Ag-Mo composite

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