Microstructures, hardening and tribological behaviors of tin matrix composites reinforced with SiC and Zn particles

Ghasemi, Fatemeh; Moazami-Goudarzi, Mohammad; Najafi, Hamidreza

doi:10.1007/s12598-020-01535-w

Cited by 7 publications

(3 citation statements)

References 25 publications

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“…A highly fluctuating trace is usually related to a rough wear surface and results in a severe wear process. 37,38 Therefore, the frictional instability of the WC-10Co cemented carbide was associated with its rough wear track caused by scuffing and WC grain pullout. Scuffing is accompanied by a rise in friction resulting in severe surface roughening through plastic flow and loss of integrity.…”

Section: Density Hardness and Fracture Toughnessmentioning

confidence: 99%

Enhanced wear resistance of cemented carbides reinforced with SiC nanoparticles

Amani

Moazami-Goudarzi

Kazemi

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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WC-10 wt% Co cemented carbides containing various amounts (0–4 wt%) of SiC nanoparticles were fabricated by vacuum sintering. The influence of SiC nanoparticles on microstructure, mechanical behavior, and dry sling wear resistance of the produced cemented carbides was explored. Results showed that SiC addition resulted in larger WC grains, thus lowering the hardness. Despite the hardness reduction, the wear resistance increased with increasing SiC content. The specific wear rate of the WC-10Co sample was 12.33 × 10−5 mm3/Nm that decreased to 1.86 × 10−5 mm3/Nm with 4 wt% nanoparticle addition. The improved wear resistance of nanocomposite samples was explained through the effects of SiC particles on modification of pore distribution, increased fracture toughness, and reduction of coefficient of friction. In the unreinforced WC-10Co cemented carbide, microstructural pores were found to be smaller but more numerous, resulting in extensive WC grain pullout. In addition, scuffing was recognized as the prevalent wear mechanism making friction trace completely unstable. In the nanocomposite samples, however, SiC nanoparticles stabilized and reduced the coefficient of friction. The change in friction condition from sliding to rolling abrasion revealed the microabrasive grooving as the predominant wear mechanism of the nanocomposites with enhanced wear resistance.

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Section: Density Hardness and Fracture Toughnessmentioning

confidence: 99%

Enhanced wear resistance of cemented carbides reinforced with SiC nanoparticles

Amani

Moazami-Goudarzi

Kazemi

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…As a result, they obtained a good quality coating that had better wear resistance compared to a coating made of Babbitt powder alone. The results of investigations of tin-bearing alloy matrix composites can also be found in papers [18][19][20]. Ramadan et al [18] produced Babbitt composite coatings on steel substrates reinforced with Al 2 O 3 nanoparticles, while Ghasemi et al [19] produced tin matrix composites reinforced with SiC and Zn particles by means of powder metallurgy technology.…”

Section: Introductionmentioning

confidence: 98%

“…The results of investigations of tin-bearing alloy matrix composites can also be found in papers [18][19][20]. Ramadan et al [18] produced Babbitt composite coatings on steel substrates reinforced with Al 2 O 3 nanoparticles, while Ghasemi et al [19] produced tin matrix composites reinforced with SiC and Zn particles by means of powder metallurgy technology. Stanev et al [20] produced aluminum alloy matrix composites infiltrated with tin Babbitt.…”

Section: Introductionmentioning

confidence: 98%

Analysis of the Effect of the Chemical Composition of Bearing Alloys on Their Wear under Wet Friction Conditions

Madej,

Leszczyńska-Madej

2023

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This paper discusses the results of a study to determine the effect of the chemical composition of two tin-based bearing alloys (B89 and B83) on their tribological properties. The tribological properties were tested using a T05 block-on-ring tester under technically dry and wet friction conditions. The research includes the determination of the wear rates, loss of mass, coefficients of friction, and changes in the coefficient of friction as a function of the process and material parameters. A study of the microstructure and base properties of such alloys, which affect the tribological properties and wear, are also presented. The study showed that chemical composition has a significant effect on the tribological properties; increasing the proportion and changing the morphology of the SnSb precipitates to rhomboidal in the B83 alloy results in an increase in wear resistance represented by loss of mass. Decreasing the size and proportion of these precipitates results in a stabilization of the frictional force variation and a slight decrease in the coefficient of friction. The research showed that SnSb phase precipitation is mainly responsible for the wear resistance of the investigated bearing alloys.

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