Effect of dry friction parameters on the tribosynthesis of secondary structures on composite antifriction iron-based material

Косторнов, А. Г.; Фущич, О. И.; Gorban, V. F.; Chevychelova, T. M.; Kostenko, O. D.

doi:10.1007/s11106-012-9449-7

Cited by 10 publications

(2 citation statements)

References 6 publications

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“…23 In the present case, iron oxides that form at sliding surface adhere weakly to bulk material at temperatures above 500 °C. 24 Thermo-mechanical stresses during sliding causes decohesion of oxides from bulk material. 25 Iron oxides are harder (Fe 2 O 3 600 HV; Fe 3 O 4 300 HV) 26 than the test materials (BM 90 HV; composites 68-130 HV).…”

Section: Wear Behaviourmentioning

confidence: 99%

High temperature tribological response of Fe-2Cu-0.8C-CaF₂ self-lubricating composites at high speeds

Mohan,

Anand,

Raina

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part J:

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In this work, Fe-2Cu-0.8C-CaF2 self-lubricating composites with calcium fluoride solid lubricant (3 □ 12 wt.%) were examined for their friction and wear at 5 and 10 m/s, at 500 °C. Addition of CaF2 decreased density and hardness of composites. During sliding, materials gained weight due to oxidation. Compared to the base matrix (Fe-2Cu-0.8C), composites showed lower weight gain and lower coefficient of friction. Increase in porosity with CaF2 content increased oxidation resulting in higher weight gain and increased friction due to wear debris abrasion. Increase in speed reduced weight gain due to higher material loss. Adhesion was the dominant wear mechanism in base matrix; delamination and wear debris abrasion in composites. Temperature rise at sliding surfaces was theoretically estimated. Increase in speed increased temperature, which reduced friction due to softening and shearing of solid lubricant. Composite with 3 wt.% CaF2 showed least surface damage and 6 wt.% showed lowest coefficient of friction, i.e., lower by 16% and 10% at 5, 10 m/s than base matrix. Tribological response of the composites to a broad range of applied parameters, viz. speed, load and temperature taken from earlier works and present work is briefly summarized. The study suggests the dominant role of CaF2 content and the wear debris in altering the tribological response. Further, the stability of the developed composites at high temperature and high load conditions was also established. The study suggests that the developed composites could serve high-load and high-temperature applications for heavy machinery such as bearings, shafts and gears.

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Section: Wear Behaviourmentioning

confidence: 99%

High temperature tribological response of Fe-2Cu-0.8C-CaF₂ self-lubricating composites at high speeds

Mohan,

Anand,

Raina

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…The addition of MnS and CaF 2 improved the self-lubricating properties. Han et al (2009) and Kostornov et al (2012) reported improvement in the mechanical and tribological properties of sintered-Fe-based materials with CaF 2 as a solid lubricant.…”

Section: Introductionmentioning

confidence: 99%

Friction and wear behaviour of Fe-Cu-C based self lubricating material with CaF₂as solid lubricant

Sharma

Anand

2017

ILT

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Purpose This paper aims to investigate the effect of CaF2 (calcium fluoride) addition as a solid lubricant on the friction and wear behaviour of sintered Fe-Cu-C materials under different loads. Design/methodology/approach In this study, the effects of CaF2 added in varying weight percentages on the friction-wear properties of Fe-2Cu-0.8C alloys are investigated. Five Fe-2Cu-0.8C-based compositions comprising CaF2 in 0, 3, 6, 9 and 12 Wt.% were prepared using the single-stage compaction and sintering technique. Friction coefficient, wear loss, hardness and compressive strength of the specimens were measured. The worn-out surfaces were analysed using a scanning electron microscope. Friction and wear tests were carried out on pin-on-disc machine under dry sliding conditions at room temperature. Findings The alloy with 3 Wt.% CaF2 was found to be useful in improving wear and friction properties, whereas higher contents of CaF2 resulted in increased wear and friction. Apart from enhanced tribological properties, a slight decrease in the compressive strength was also observed in the 3-Wt.%-CaF2-added sample. Adhesion and abrasion were the prominent wear types observed during this study. Originality/value A new self-lubricating composite is developed where CaF2 is used as a solid lubricant in a Fe-Cu-C-based matrix. CaF2, being a high-temperature lubricant, is tried and tested for friction and wear at room temperature, and the results show that the addition of CaF2 in Fe-Cu-C improved its friction and wear properties. Thus, the developed material can be used for antifriction applications.

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Calcium Fluoride a Potential Solid Lubricant for Green Tribology and Sustainability

Mohan

Anand

Haq

et al. 2020

Lecture Notes in Mechanical Engineering

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Effect of dry friction parameters on the tribosynthesis of secondary structures on composite antifriction iron-based material

Cited by 10 publications

References 6 publications

High temperature tribological response of Fe-2Cu-0.8C-CaF₂ self-lubricating composites at high speeds

High temperature tribological response of Fe-2Cu-0.8C-CaF₂ self-lubricating composites at high speeds

Friction and wear behaviour of Fe-Cu-C based self lubricating material with CaF₂as solid lubricant

Calcium Fluoride a Potential Solid Lubricant for Green Tribology and Sustainability

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Effect of dry friction parameters on the tribosynthesis of secondary structures on composite antifriction iron-based material

Cited by 10 publications

References 6 publications

High temperature tribological response of Fe-2Cu-0.8C-CaF2 self-lubricating composites at high speeds

High temperature tribological response of Fe-2Cu-0.8C-CaF2 self-lubricating composites at high speeds

Friction and wear behaviour of Fe-Cu-C based self lubricating material with CaF2as solid lubricant

Calcium Fluoride a Potential Solid Lubricant for Green Tribology and Sustainability

Contact Info

Product

Resources

About

High temperature tribological response of Fe-2Cu-0.8C-CaF₂ self-lubricating composites at high speeds

High temperature tribological response of Fe-2Cu-0.8C-CaF₂ self-lubricating composites at high speeds

Friction and wear behaviour of Fe-Cu-C based self lubricating material with CaF₂as solid lubricant