A State-of-the-art overview

Zhang, Zhenxue; Dong, Hanshan

doi:10.1051/mfreview/2015001

Cited by 13 publications

(7 citation statements)

References 59 publications

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“…Due to their oxidation stability and low tribooxidation sensitivity, the lamellar oxide of V 2 O 5 has been considered to be a good candidate for low friction coatings [8]. Meanwhile, Magnéli oxides like V 2 O 5 have also been explored for their friction and wear properties [9]. Because V 2 O 5 NWs had a relatively high mechanical strength, they can provide a support and effectively improve the friction and wear performance for the solid lubricant coating [10].…”

Section: Introductionmentioning

confidence: 99%

Tribological performance of TiAl matrix composites containing silver and V₂O₅ nanowires at elevated temperatures

et al. 2016

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TiAl alloys (TAs) are widely used in aircraft and automotive industries, but their poor wear resistance restrains further applications. In this paper, the tribological properties of TiAl matrix self-lubricating composites containing lubricants of varying amounts (0.5wt.%, 1.5wt.% and 2.5wt.%) of V 2 O 5 nanowires (NWs) and 5 wt.% silver against Si 3 N 4 balls were investigated from room temperature to 600 o C under the same conditions of 20N load per bearing section and 0.35 m/sec gliding speed.TiAl-5Ag-1.5V 2 O 5 NWs (TB) exhibited excellent tribological properties over a wide temperature range. Moreover, at 450 o C, TB showed lower friction coefficient of 0.19 and the smaller wear rate of 1.87×10 -4 mm 3 N -1 m -1 , which were attributed to a continuous lubricating film containing V 2 O 5 NWs and silver on the friction surface.Furthermore, in the formed lubricant films, the silver was used as a solid lubricant to provide good lubrication, while V 2 O 5 NWs played the role as a support with high shear strength. The investigation indicated that V 2 O 5 NWs and silver exhibited the excellent synergistic effect on improving the tribological properties of TB.

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Section: Introductionmentioning

confidence: 99%

Tribological performance of TiAl matrix composites containing silver and V₂O₅ nanowires at elevated temperatures

et al. 2016

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“…Soft metallic silver with face‐centered cubic structure, which can cause intergranular slip and has low critical shear stress (0.588 MPa), so it is added to composite materials or coatings as a good lubricating additive [23, 24]. Compared with molybdenum disulfide, calcium fluoride or carbon nanotubes, the unique thermochemical stability makes silver exert a lubricating effect in the range of room temperature to 500 °C [25].…”

Section: Introductionmentioning

confidence: 99%

Microhardness, compression performance and high‐temperature tribological properties of Ti₂AlNb‐silver self‐lubricating composite

Gao

Zhao

Wang

et al. 2021

Materialwissenschaft Werkst

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The Ti2AlNb‐based self‐lubricating composite material reinforced with silver particles of 0 wt% to 15 wt% was prepared by spark plasma sintering, and the microhardness, compression performance and high‐temperature tribological properties were investigated. The results show that the silver is distributed in the Ti2AlNb matrix as small islands. The microhardness reaches the maximum at 5 wt% silver content but then decreases sharply. The compressive strength is reduced due to the silver‐rich areas have become the initiation points of cracks, and the softening of silver at high temperatures intensifies the process. The friction coefficient and wear rate of the composite material at 500 °C are significantly reduced by silver, and the lubrication mechanism is attributed to the synergistic effect of silver and oxides.

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“…The combined uses of surface treatments for applications in extreme conditions such as high-temperature hot-forming, high-friction and high-wear, etc. were further reported in the literatures [34,35]. The surfaces' mechanical, thermal, optical, biomedical and magnetic properties could also be modified through using other techniques such as surface texturing/ patterning by laser ablation, focused ion-beam and electron-beam.…”

Section: Surface Modification and Functionalisationmentioning

confidence: 99%

The methodologies and strategies for the development of novel material systems and coatings for applications in extreme environments − a critical review

et al. 2018

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Abstract. The aim of this paper is to present a critical analysis of existing methodologies, approaches and strategies used to develop materials systems and coatings for uses in extreme environments. The extreme or harsh conditions encompass a large variety of in-service forms such as: extreme temperatures, abrasion, corrosion, impact and radiation that can exist in various applications such as those associated with aerospace and aeronautical engineering, land and marine transport, manufacturing machinery, and even microelectronics products. This article describes how working environment and required service performance of a particular part or structure could affect the choice of materials and surfaces to which it is composed. In addition, the paper explains the relevance that abusive working environments have for industry, especially relating to their costs, being followed by an overview of surface deposition approaches that are currently popularly used to improve performance of mechanical devices that need to combat adverse conditions. Finally, a material system and three kinds of protective coatings that could be used in applications in extreme conditions are described. The critical review is an outcome of the strategic review from the EU H2020 SUPERMAT project which deals with materials and manufacture for the products/structural parts used in extreme conditions. Keywords: extreme environment / material system / surface treatment / coating / economic impacts / case study Extreme environment and material-related issuesA harsh environment could be any environment that impedes the operation of a device/system. Many types of the conditions could be considered to be harsh, such as: extreme pressure/temperature, shock, vibration, chemical reactivity, radiation, corrosion and humidity, ranging from the applications in, such as alloy production, component manufacture, transport and biomedical implants [1] while the energy sector faces additional harsh environment such as that in various power plants [2], some of such examples being listed below: -Transport: Automobiles and airplanes that are operated in extreme conditions, being exampled by engines components and high-friction paired parts; -Energy: The devices/pipelines/components used for energy conversions, transports and storages, which faces high-temperature, various kinds of mediums and nuclear/chemical reactions, and suffer from corrosion and fatigue failures; -Manufacturing: Tools (e.g. cutting tools, dies and moulds, welding tools, high-temperature nozzles, etc.) used in manufacturing processes;

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A State-of-the-art overview

Cited by 13 publications

References 59 publications

Tribological performance of TiAl matrix composites containing silver and V₂O₅ nanowires at elevated temperatures

Tribological performance of TiAl matrix composites containing silver and V₂O₅ nanowires at elevated temperatures

Microhardness, compression performance and high‐temperature tribological properties of Ti₂AlNb‐silver self‐lubricating composite

The methodologies and strategies for the development of novel material systems and coatings for applications in extreme environments − a critical review

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A State-of-the-art overview

Cited by 13 publications

References 59 publications

Tribological performance of TiAl matrix composites containing silver and V2O5 nanowires at elevated temperatures

Tribological performance of TiAl matrix composites containing silver and V2O5 nanowires at elevated temperatures

Microhardness, compression performance and high‐temperature tribological properties of Ti2AlNb‐silver self‐lubricating composite

The methodologies and strategies for the development of novel material systems and coatings for applications in extreme environments − a critical review

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Tribological performance of TiAl matrix composites containing silver and V₂O₅ nanowires at elevated temperatures

Tribological performance of TiAl matrix composites containing silver and V₂O₅ nanowires at elevated temperatures

Microhardness, compression performance and high‐temperature tribological properties of Ti₂AlNb‐silver self‐lubricating composite