Influence of porosity on the tribological properties of iron-base powder metallurgy materials

Fedorchenko, I. M.; Kushchevskii, A. E.; Пушкарев, В.В.; Drachinskii, A. S.; Perepelkin, A. V.; Podrezov, Yu. N.

doi:10.1007/bf00796607

Cited by 8 publications

(2 citation statements)

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“…Some factors mentioned could be eliminated as a result of using pure iron [21,54,55]. But high content of impurities in industrial iron powder, insufficient porous structure description, and narrow ranges of the test pressure variation are the reasons of determination impossibility of the contribution of each measured parameters with high reliability.…”

Section: Influence Of Pores On the Friction And Wear Of Ironmentioning

confidence: 99%

Model of Fracture, Friction, and Wear Phenomena of Porous Iron

Шацов

Ryaposov

Larinin

2011

Advances in Tribology

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Mechanical and tribotechnical features of powdered materials are strongly influenced by pore volume, fracture character, impurities, alloying, concentration inhomogeneity, friction conditions, and other factors. Pores also have influence on acceleration of diffusion processes and reduce undercooled austenite resistance. Annealed in hydrogen, ultra pure iron powder was used to study porous iron features. Toughness fracture and tribotechnical features had nonmonotonic dependence from porosity different from all known dependences got from technical iron powders. Researches brought out the fact that in process of porosity reduction by pressing and annealing cycles, the average dimension of porous is changed. According to the analysis of porous structure were created models of friction, wear, and fracture of pure porous iron.

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Section: Influence Of Pores On the Friction And Wear Of Ironmentioning

confidence: 99%

Model of Fracture, Friction, and Wear Phenomena of Porous Iron

Шацов

Ryaposov

Larinin

2011

Advances in Tribology

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“…The first route is preferred because sintering process activates at ≤232°C, at which Sn forms a liquid phase, and Cu and Sn particles have the better pressing ability when assimilating with that of the bronze powders. The second route during the investigation has resulted in the conflicting conclusions, into the impact of Cu and Sn added powders (Fedorchenko et al , 1984). Many investigations have been done to develop low-cost antifriction Fe-Cu-Sn PM alloys with uniformly distributed mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Tribological characterization of Fe-Cu-Sn alloy with graphite as solid lubricant

Mushtaq

Wàňi

2018

ILT

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Purpose This paper aims to investigate the effect of varying Wt.% (0-3 per cent) of graphite as a solid lubricant on the tribological properties of Fe-Cu-Sn alloy. Design/methodology/approach Powder metallurgy technique is used for the fabrication of Fe-Cu-Sn alloy with varying Wt.% of graphite. The tribological tests were conducted on a ball-on-disc universal tribometer under different testing conditions. Findings The friction coefficient decreases with sliding distance and load, but the wear rate increases with the increase in load. The G3 composition showed the best tribological properties under dry conditions. The wear mechanism of G0 composition shows adhesive wear and abrasive wear, while G1, G2 and G3 compositions show mildly abrasive wear. Originality/value This paper reported a new, cheap and wear-resistant self-lubricating Fe matrix material for gears and bearings.

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