A note on the effect of phosphorus on the microstructure and mechanical properties of leaded-tin bronze

Aksoy, M.; Kuzucu, Veysel; Turhan, Hüseyin

doi:10.1016/s0924-0136(02)00137-1

Cited by 40 publications

(13 citation statements)

References 8 publications

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“…The black regions were identified to consist of zinc and copper sulphide species. This is in accordance with the findings of other researchers [16][17][18][19]. The babbitt used in this study consisted of 34% lead (Pb), 50% tin (Sn), 12% antimony (Sb) and 4% copper (Cu), and is shown in the micrograph in Figure 5.…”

Section: Soft Metal and Soft Metal Alloys Studiedsupporting

confidence: 92%

Overview of bearing alloy corrosion in ester base fluids

Torbacke¹

2007

J of Synthetic Lubrication

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The corrosion of soft metals in ester base fluids was studied. Leaded red brass, babbitt, lead and tin were investigated in different natural and synthetic ester base fluids. The base fluids were tested neat or with added oleic acid to model oxidation and hydrolysis. In a few experiments, water was added. The metal specimens were brought into contact with the base fluid under either static or dynamic conditions. The corrosion degree was measured both on the metal specimen (gravimetrically) and in the oil (wear metal analysis). Larger weight losses were observed for the babbitt material than for the leaded red brass. A higher corrosion rate was observed for ester base fluids with a lower hydrolytic stability. Experiments under dynamic conditions gave rise to higher rates of corrosion. Generally, higher corrosion rates were observed for high levels of added oleic acid. Additionally, a polished specimen surface seemed to promote corrosion in this work.

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Section: Soft Metal and Soft Metal Alloys Studiedsupporting

confidence: 92%

Overview of bearing alloy corrosion in ester base fluids

Torbacke¹

2007

J of Synthetic Lubrication

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“…Currently, one of the main ways to improve the performance of tin-bronze alloys is to add alloying elements, such as rare earths, Ni, Pb, Fe, Mn, Al and P 4,5 . M. Aksoy 6 and H. Turhan 7 studied the matrix alloying method by adding Fe, Mn, Si, P, S and other elements to tin-bronze alloys, in which, the hard Mn 5 Si 3 and Fe 3 S dispersed phases precipitated from the matrix, improved the sintering and abrasion resistance. Qi Zhan Jun 8 studied the microstructure of high lead bronze alloy with different amounts of lead, S and rare earths, which demonstrated that the lack of S addition led to the severe lead segregation, occurring in the centrifugal casting of high lead bronze alloys.…”

Section: Introductionmentioning

confidence: 99%

Microstructure analysis and mechanical properties of phosphorus-reinforced ZCuPb20Sn5 alloy

Ren

Zhang²,

et al. 2019

Sci Rep

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An investigation was carried out to assess the effect of the P content on the microstructure and mechanical properties of ZCuPb20Sn5 alloy. Alloys of various compositions, (0.05, 0.1, 0.2, 0.3, 0.5% wt.% P) were melted in a melting furnace under 1200 °C and cast into metal mould, the hardness, strength and elongation of alloy castings which adding P or not in melting process were tested and the casting mircostructure was analyzed. The results show that the second phase appeared and gradually increased in amount with the content of P elements increased. Also, the microstructure of ZCuPb20Sn5 alloy was refined, and the average size of lead inclusions was reduced and formed a dispersed network of eutectoid inclusions.The addition of P had a beneficial effect on the microstructure and properties of ZCuPb20Sn5 alloy. The hardness and tensile strength of ZCuPb20Sn5 alloy increased, but the elongation increased at first, then decreased, when the P content increased. When the P content was less than 0.1 wt.%, the functions of phosphorous copper mainly was used as a deoxidizing initial gas, but when exceeded 0.1 wt.%, a second phase reinforcing particle formed with copper or nickel together, which improved the mechanical properties of the alloy. However, the elongation was lowered due to the brittle phosphide phase.

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“…1 High Pb-tin bronze alloys, which are currently widely used in engine bearings with high-speed and heavy load, have excellent dry friction resistance, high thermal conductivity and fatigue resistance. 2,3 Currently, one of the main ways to improve the performance of tin-bronze alloys is to add alloying elements, such as rare earths, Ni, Pb, Fe, Mn, Al and P. 4,5 M. Aksoy 6 and H. Turhan 7 used the matrix alloying method to add Fe, Mn, Si, P, S and other elements to tin-bronze alloys, in which, the hard Mn 5 Si 3 and Fe 3 S dispersed phases precipitated from the matrix, improving the sintering and abrasion resistance. Qi Zhan Jun 8 studied the microstructure of high lead bronze alloy with different amounts of lead, S and rare earths, which demonstrated that the lack of S addition led to the severe lead segregation, occurring in the centrifugal casting of high lead bronze alloys.…”

Section: Introductionmentioning

confidence: 99%