On the wear rate of an Sn11Sb5.5Cu Babbitt

Valeeva, A. Kh.; Valeev, I. Sh.; Fazlyakhmetov, R. F.

doi:10.3103/s1068366617010093

Cited by 7 publications

(4 citation statements)

References 4 publications

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“…The combination of such diverse properties can only be achieved by alloys composed of two or more phases with different properties. The basic factor determining the application of Sn-Sb-Cu alloys for bearing alloys is the presence of hard SnSb compound crystals and acicular particles of the Cu 6 Sn 5 compound, evenly distributed in a soft, plastic tin-rich matrix [ 1 , 2 , 3 , 4 , 5 ]. Previous studies show that refinement and a change in the morphology of the hard SnSb intermetallic phases improve, in particular, the tribological properties.…”

Section: Introductionmentioning

confidence: 99%

“…Potekhin et al [ 3 ] studied various casting methods, including the turbulent casting method, making it possible to obtain a tin bearing alloy with a microstructure with globular precipitates of intermetallic phases, which in turn leads to the most favorable tribological properties. On the other hand, the lubricated forging method proposed by the authors of work [ 4 ] contributed to the production of a homogeneous microstructure with numerous fine and equiaxed SnSb phase particles with a size of 1–2 μm, which resulted in a significant increase in the share of ductile cracking, the main feature of which is the slow development of cracks. Moreover, the authors proved that the rate of tin Babbitt wear depends on the wear rate of β phase particles (SnSb).…”

Section: Introductionmentioning

confidence: 99%

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Effect of FSP on Tribological Properties of Grade B89 Tin Babbitt

et al. 2021

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The article presents the results of tests of the tribological properties of a bearing alloy on a tin matrix (B89) after surface modification by means of friction stir processing (FSP) with a Whorl tool. The samples were processed using two tool speeds of 280 and 580 RPM and a constant linear speed of 355 mm/min. The obtained results proved the significant influence of FSP on both the morphology of the precipitates and the investigated properties. Changes in the nature and course of friction were also observed, including the participation of individual wear mechanisms in the studied test conditions. The use of the 560 RPM tool rotation speed reduces the friction coefficient and the weight loss by about 30%. The flexural strength was also increased from 123 to 307 MPa.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of FSP on Tribological Properties of Grade B89 Tin Babbitt

et al. 2021

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“…Moreover, the microstructure of Babbitt is decided by its tribological properties, especially the SnSb phase. The coarse SnSb grain has a negative impact on Babbitt alloy properties resulting from it being easy to crumble from substrate due to stress concentration during the sliding process (Valeeva et al , 2017). Hence, it plays an important role to improve the tribological performance of Babbitt alloy by modulating microstructure.…”

Section: Introductionmentioning

confidence: 99%

Differentiated SnSb grain size distribution for improved tribological properties of Babbitt alloy

Guo

Ren

et al. 2023

ILT

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Purpose The grain size and grain distribution mode have a significant impact on the tribological properties of Babbitt alloy. The purpose of this paper is to study the effect of differentiated SnSb grain size distribution on the improvement of tribological properties of Babbitt alloy. Design/methodology/approach Babbitt (marked by babbitt-cr), with a differentiated SnSb grain size distribution, was fabricated using a selective zone laser surface treatment. Bare Babbitt with coarse SnSb grain was marked as babbitt-c, and Babbitt with refined SnSb grain was marked as babbitt-r. The microstructure, microhardness and wettability of specimens were tested. The tribological properties of babbitt-c, babbitt-r and babbitt-cr were evaluated under dry and lubricated conditions. Findings The microstructure transforms from single coarse SnSb grain distribution or single refined SnSb grain distribution to differentiated SnSb grain size distribution, as a result of selective zone laser surface treatment. Among three specimens of microhardness, babbitt-cr showed the highest microhardness. The lipophilicity property of babbitt-cr was better compared to babbitt-c. A mixture of coarse and refined grain is beneficial to improve the tribological properties of Babbitt alloy under dry condition. Furthermore, compared with babbitt-c, the wear resistance of babbitt-cr was enhanced under lubricated condition. However, the anti-wear property of babbitt-cr was not significantly improved relative to babbitt-r with an increase in the loads. Originality/value The study demonstrates that modulated different grain size alternating distribution modes can improve the tribological properties of Babbitt alloy. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-09-2022-0259/

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“…Tin babbitts are classified as casting alloy. The microstructure of these alloys is multiphase, usually three-phase: a, b, g or b, e, where a-solution of antimony and copper in tin, constitutes a soft and ductile matrix, b-irregular crystals of compound SnSb, g-acicular precipitates of compound Cu 6 Sn 5 (Ref [1][2][3][4]. The presence of the b phase particles increases the hardness of the alloy without deteriorating the sliding properties, but only up to 20% by weight Sb, further increase in the antimony content in the alloy increases the intensity of wear (Ref 5).…”

Section: Introductionmentioning

confidence: 99%

Effect of Chemical Composition on the Microstructure and Tribological Properties of Sn-Based Alloys

Leszczyńska-Madej

Madej

Hrabia-Wiśnios

2019

J. of Materi Eng and Perform

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This article presents the test results of two bearing alloys on a tin matrix, differing in the content of alloy additions. Microscopic tests were performed using scanning electron microscopy, along with Brinell hardness tests and tests of tribological properties in the conditions of technical dry friction and wet friction using a TU-32 oil. Additionally, wear mechanisms were analyzed depending on the process conditions. The results indicate better tribological properties of the B82 alloy, with a higher content of antimony compared to the B89 alloy. This alloy contains more precipitates of hard phase b-SnSb, which both influence the level of the mechanical properties and determine the tribological properties. Additionally, it was proven that using the TU-32 oil as a lubricant practically eliminates adhesive wear, and the post-friction surfaces for both alloys are of a similar nature.

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On the wear rate of an Sn11Sb5.5Cu Babbitt

Cited by 7 publications

References 4 publications

Effect of FSP on Tribological Properties of Grade B89 Tin Babbitt

Effect of FSP on Tribological Properties of Grade B89 Tin Babbitt

Differentiated SnSb grain size distribution for improved tribological properties of Babbitt alloy

Effect of Chemical Composition on the Microstructure and Tribological Properties of Sn-Based Alloys

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