Sintering Studies and Microstructural Evolution of Fe-MoS&lt;sub&gt;2&lt;/sub&gt; Mixtures

Furlan, Kaline P.; Assunção, Julia Zimmermann de; Paz, G.; Binder, Cristiano; Klein, Aloı́sio Nelmo

doi:10.4028/www.scientific.net/msf.802.415

Cited by 6 publications

(3 citation statements)

References 11 publications

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“…Graphite and MoS 2 with layered structure are more widely used solid lubricants (Jr et al , 2018), but it was found that graphite is easy to react with Fe to form diffuse hard spots (Dutkiewicz et al , 2015), which causes more damage to the mate parts. Furlan et al (2014) found that MoS 2 reacts with the iron matrix during sintering, which is completed at a temperature of 1050°C. For FeS and MoS 2 , graphite structure is similar, has good friction reduction properties and exhibits high chemical stability in the iron matrix at high temperatures; due to these characteristics as well as low cost, FeS can be introduced as a solid lubricant in iron-based self-lubricating materials (Peng et al , 2017).…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of FeS/iron-based self-lubricating materials by chemical nickel plating-mechanical alloying

Zheng,

Yin,

et al. 2024

ILT

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Purpose This paper aims to investigate the effect of chemical nickel plating and mechanical alloying on the mechanical and tribological properties of FeS/iron-based self-lubricating materials as well as the wear mechanism of the materials. Design/methodology/approach Surface modification of FeS powder was carried out by chemical nickel plating method and mechanical alloying of mixed powder by ball milling. The mechanical properties of the material were tested by tribological testing by M-200 ring block type friction and wear tester. Optical microscope was used to observe the surface morphology of the material and the transfer film on the surface of the mate parts, and scanning electron microscope and EDS were used to characterize the wear surface. Findings Mechanical alloying ball milling was carried out so that the lubricating particles in the matrix are uniformly dispersed; nickel-plated layer enhances the interfacial bonding of FeS and the matrix, and the combination of the two improves the mechanical properties of the material, and at the same time the friction side of the surface of the lubrication of FeS lubricant transfer film formed is denser and more intact, and the friction coefficient of friction side and the wear rate of the material have been greatly reduced. Originality/value This work aims to improve the mechanical and tribological properties of FeS/iron-based self-lubricating materials and to provide a reference for the preparation of materials with excellent overall properties.

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Section: Introductionmentioning

confidence: 99%

Preparation and properties of FeS/iron-based self-lubricating materials by chemical nickel plating-mechanical alloying

Zheng,

Yin,

et al. 2024

ILT

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“…MoS 2 is one of the most commonly used solid lubricants for Cu-Fe-based friction materials; it can be used to stabilize friction and improve the wear resistance of composites [6][7][8][9]. However, numerous studies have shown that MoS 2 reacts with Cu or Fe matrices when sintered at temperatures above 950°C [10][11][12][13][14][15][16][17][18][19][20][21]; our recent study revealed that the lubricity of MoS 2 is attributable to the resultant formation of metal sulfides such as FeS [21]. Because of its layered structure, good thermal stability, and low cost, FeS may be a suitable alternative to MoS 2 lubricants in the production of Cu-Fe-based friction materials.…”

Section: Introductionmentioning

confidence: 99%

Solid FeS lubricant: a possible alternative to MoS2 for Cu–Fe-based friction materials

Peng

Yan

Zhan

et al. 2017

Int J Miner Metall Mater

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Molybdenum disulfide (MoS 2 ) is one of the most commonly used solid lubricants for Cu-Fe-based friction materials. Nevertheless, MoS 2 reacts with metal matrices to produce metal sulfides (e.g., FeS) and Mo during sintering, and the lubricity of the composite may be related to the generation of FeS. Herein, the use of FeS as an alternative to MoS 2 for producing Cu-Fe-based friction materials was investigated. According to the reaction principle of thermodynamics, two composites-one with MoS 2 (Fe-Cu-MoS 2 sample) and the other with FeS (FeS-Cu 2 S-Cu-Fe-Mo sample), were prepared and their friction behaviors and mechanical properties were compared. The results showed that MoS 2 reacted with the Cu-Fe matrix to produce FeS, metallic ternary sulfides, and Mo when sintered at 1050°C. The MoS 2 -Cu-Fe and FeS-Cu 2 S-Cu-Fe-Mo samples thereby exhibited similar characteristics with respect to phase composition, density, hardness, and tribological behaviors. Micrographs of the worn surfaces revealed that the stable friction regime for both composites stemmed from the iron sulfides friction layers rather than from the molybdenum sulfides layers.

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“…the lubricant remains stable during the entire processing cycle. The compound MoS 2 , e.g., is widely used in combination with bronze matrices, but may react with iron matrices depending on the sintering temperature utilized (Miyoshi, 2001; Sustarsic et al, 2003; Dhanasekaran & Gnanamoorthy, 2007 a , 2007 b ; Furlan et al, 2012, 2014, 2015).…”

Section: Introductionmentioning

confidence: 99%

Microstructural Characterization of Solid State Reaction Phase Formed During Sintering of Hexagonal Boron Nitride with Iron

et al. 2017

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In the development of dry self-lubricating composites, not only solid lubricant particle size and distribution are important, but also the correct selection of the solid lubricant characteristics, which should be stable, i.e. not reactive, during the whole processing. In this work, Fe+9 vol% h-BN composites were produced by uniaxial cold compaction and sintering, for which a reaction between h-BN and iron was detected after sintering at 1,150°C. The reaction phase was characterized by optical and scanning electron microscopy and identified by X-ray diffraction and energy-dispersive X-ray spectroscopy. The newly formed phase had high hardness when compared with the iron matrix. The resulting composites presented a high friction coefficient and high wear.

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Sintering Studies and Microstructural Evolution of Fe-MoS<sub>2</sub> Mixtures

Cited by 6 publications

References 11 publications

Preparation and properties of FeS/iron-based self-lubricating materials by chemical nickel plating-mechanical alloying

Preparation and properties of FeS/iron-based self-lubricating materials by chemical nickel plating-mechanical alloying

Solid FeS lubricant: a possible alternative to MoS2 for Cu–Fe-based friction materials

Microstructural Characterization of Solid State Reaction Phase Formed During Sintering of Hexagonal Boron Nitride with Iron

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