Microstructure of the β-phase in the Sn11Sb5.5Cu babbit

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

doi:10.1134/s0031918x17010082

Cited by 9 publications

(5 citation statements)

References 5 publications

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“…O Babbitt à base de estanho é uma liga heterogênea composta por uma matriz dúctil, que é uma solução sólida de antimônio e cobre em estanho, e duas outras fases formadas por compostos intermetálicos mais duros que a matriz [6,7]. Sendo uma destas uma fase formada por grandes cubos duros de estanho e antimônio (SnSb), e a outra composta por cobre e estanho (CuSn) em formato de estrelas ou agulhas de acordo com a quantidade presente de cada um destes dois elementos químicos [7,10].…”

Section: Composição Química Do Babbittunclassified

“…Hoje, além das ligas à base de estanho (com composições diversas além da original) existem ligas à base de chumbo e ligas à base de estanho e chumbo. De maneira que as ligas à base de estanho, mesmo sendo mais caras são as mais utilizadas em função das suas características, como boa resistência à corrosão, fácil ligação, pequena tendência à segregação e alta condutividade térmica [5][6][7][8]. Ademais, as ligas à base de estanho também possuem melhor resistência ao desgaste, maior suporte de carga normal e são menos frágeis [9].…”

Section: Introductionunclassified

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Estudo do comportamento tribológico do par liga Babbitt – aço ABNT 1045 quando variadas a espessura e a rugosidade do revestimento

Ribeiro

Câmara

2020

Matéria (Rio J.)

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RESUMO O Babbitt, também conhecido como metal patente ou metal branco é uma liga macia muito utilizada em mancais de deslizamento que trabalham em contato com aço, e tem como elementos de base estanho ou chumbo, além de compostos intermetálicos formados geralmente por antimônio e cobre. O presente trabalho buscou avaliar a influência dos parâmetros rugosidade e espessura do revestimento no comportamento tribológico da liga quando em contato com o aço ABNT 1045. Foram realizados ensaios tribológicos de pino sobre disco, utilizando pinos de aço ABNT 1045 e corpos de prova de aço revestidos com Babbitt simulando o contato de um eixo sobre um mancal revestido com Babbitt. A rugosidade e a espessura do revestimento foram variadas em três níveis, com o intuito de observar o comportamento em relação ao atrito e ao desgaste com a modificação destas variáveis. Nos ensaios que utilizaram corpos de prova com as menores rugosidades dentro da faixa analisada, ocorreu um aumento de 0,05 ± 0,02 para 0,46 ± 0,06 no coeficiente de atrito quando se elevou a espessura de revestimento de 0,45 ± 0,07 mm para 1,08 ± 0,17 mm. O maior coeficiente de atrito foi observado no ensaio do corpo de prova com maior espessura de revestimento (1,08 ± 0,17 mm) e menor rugosidade (0,47 ± 0,01 mm), o maior desgaste foi registrado no ensaio com o corpo de prova de maiores espessura de revestimento e rugosidade (1,08 ± 0,17 mm e 1,29 ± 0,20 mm, respectivamente) e o menor desgaste e coeficiente de atrito foram obtidos pelo ensaio realizado no corpo de prova com menor rugosidade (0,43 ± 0,03 mm) e espessura de revestimento média (0,45 ± 0,07 mm).

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Section: Composição Química Do Babbittunclassified

Section: Introductionunclassified

Estudo do comportamento tribológico do par liga Babbitt – aço ABNT 1045 quando variadas a espessura e a rugosidade do revestimento

Ribeiro

Câmara

2020

Matéria (Rio J.)

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“…Among this set of alloys, tin-based alloys such as those in the Sn-S-b system, are the most commonly used because of their characteristics, such as good corrosion resistance, ease of bonding, low tendency towards segregation, and high thermal conductivity [3][4][5]. In addition, tin-based alloys also have better wear resistance, tensile strength, and fatigue resistance, which makes them useful in applications that require high strength and durability [6].…”

Section: Introductionmentioning

confidence: 99%

“…They also have good welding properties, which facilitate their application in manufacturing processes [7,8], and do not constitute a hazardous substance, such as lead alloys, which are prohibited by the EU's Restriction of Hazardous Substances (RoHS) [7][8][9][10]. The Sn-Sb alloys are commonly used as patent metal in various applications, such as in the manufacture of batteries, electronic equipment, automotive parts, and kitchen utensils, among others [4,6]. In batteries, for example, Sn-S-b alloys are used as grid material for electrode manufacturing, due to their high corrosion resistance and good electrical conductivity [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Influence of Solidification Parameters and Solute Content on the Machinability of Two Lead-Free Babbit Metals

Costa Maciel

2023

Current Trends in Eng Sc

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Studies suggest that white metal Sn-Sb alloys are the most commonly type of babbit metal used in industry. However, it is necessary to evaluate manufacturing characteristics and solute contents that leads the best machining conditions. This work presents a correlation between solidification parameters and machinability of Sn-2.0wt%Sb and Sn-5.5wt%Sb alloys, solidified in a horizontal directional device, evaluating the influence of solute content on these results. Cutting temperatures were measured in dry necking processes along the length of the ingot. It was observed that the reverse cellular-dendritic transition influenced the cutting temperature results. The range of cell and dendrite spacings varies approximately from 40 to 330 μm on the Sn-2.0wt%Sb alloy and from 15 to 240 μm on the Sn-5,5wt%Sb alloy. In the cellular region, higher values are found for the Sn-5.5wt%Sb alloy, but in the dendritic region, these values were higher for the Sn-2.0wt%Sb alloy.

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“…In recent years, the improvement in tribological performance of Babbitt was focused on SnSb (grain size and grain shape) and distribution of SnSb. For example, the added Ag element or radial-shear rolling was used to modulate microstructure of Babbitt alloy (Dong et al, 2018;Valeeva et al, 2017). Meanwhile, tribological properties of Babbitt was improved by refined grain of b phase (Zhao, 2019).…”

Section: Introductionmentioning

confidence: 99%

Effect of different Cu₆Sn₅ morphology on the tribological properties of Babbitt alloy

Sun

Guixiang

et al. 2022

ILT

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Purpose This paper aims to study different morphology Cu6Sn5 effect on Babbitt alloy tribological properties. Design/methodology/approach Different morphology Cu6Sn5 of Babbitt was conducted by different cooling modes. Bare Babbitt was marked by Babbitt-0, Babbitt modified by first cooling mode (marked by Babbitt-1) and Babbitt modified by second cooling mode (marked by Babbitt-2). The microstructure and microhardness of specimens were tested. Then, tribological properties of Babbitt-0, Babbitt-1 and Babbitt-2 were performed by reciprocating mode under lubricated condition. Findings The results showed that shape Cu6Sn5 of Babbitt was changed from mixed needle and star-like shape to short rod-like or granular shape. The microhardness of Babbitt-1 was highest than that of Babbitt-0 and Babbitt-2. Compared with Babbitt-0 and Babbitt-2, tribological properties of Babbitt-1 were better under lubricated condition due to short rod-like and sparse distribution of Cu6Sn5. Moreover, the simulation result of strain and stress of Babbitt-1 was lowest than that of Babbitt-0 and Babbitt-2. Originality/value Different morphology (shape and distributed) of Cu6Sn5 was obtained by different cooling modes. Modulated different forms of Cu6Sn5 around SnSb was beneficial to improve Babbitt alloy tribological properties.

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Microstructure of the β-phase in the Sn11Sb5.5Cu babbit

Cited by 9 publications

References 5 publications

Estudo do comportamento tribológico do par liga Babbitt – aço ABNT 1045 quando variadas a espessura e a rugosidade do revestimento

Estudo do comportamento tribológico do par liga Babbitt – aço ABNT 1045 quando variadas a espessura e a rugosidade do revestimento

Influence of Solidification Parameters and Solute Content on the Machinability of Two Lead-Free Babbit Metals

Effect of different Cu₆Sn₅ morphology on the tribological properties of Babbitt alloy

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Microstructure of the β-phase in the Sn11Sb5.5Cu babbit

Cited by 9 publications

References 5 publications

Estudo do comportamento tribológico do par liga Babbitt – aço ABNT 1045 quando variadas a espessura e a rugosidade do revestimento

Estudo do comportamento tribológico do par liga Babbitt – aço ABNT 1045 quando variadas a espessura e a rugosidade do revestimento

Influence of Solidification Parameters and Solute Content on the Machinability of Two Lead-Free Babbit Metals

Effect of different Cu6Sn5 morphology on the tribological properties of Babbitt alloy

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Effect of different Cu₆Sn₅ morphology on the tribological properties of Babbitt alloy