Graphite and Nickel Containing Tin Bronze-Steel Bimetals as Lead Free Bearing Materials

Wang, Ying; Yang, Qi; Chen, Jintian; Zhou, Jianping

doi:10.1590/1980-5373-mr-2015-0714

Cited by 6 publications

(2 citation statements)

References 16 publications

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“…This material is supplemented with nickel when compared to the other two. The nickel content significantly improves the coefficient of friction [33]. These values are best for contacting the X45NiCrMo4 experimental material with a ZrO 2 ceramic ball.…”

Section: Area Of Removed Materialsmentioning

confidence: 90%

Dry Sliding Friction of Tool Steels and Their Comparison of Wear in Contact with ZrO2 and X46Cr13

et al. 2020

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Tool steels are used in stamping, shearing processes, and as cutting tools due to their good mechanical properties. During their working cycle, steels are subject to aggressive conditions such as heat stress, fatigue, and wear. In this paper, three tool steels, namely X153CrMoV12, X37CrMoV5-1, and X45NiCrMo4 were selected against two types of bearing balls, ZrO2 and X46Cr1. All measurements were performed on a UMT TriboLab universal tribometric instrument under dry conditions. The main objective of the experiment was to analyze and compare tool steel wear in contact with two kinds of bearing balls with a diameter of 4.76 mm. This evaluation is focused on the hardness, surface roughness, and microstructure of all samples and on the impact of the input parameters on the resulting wear. All three types of tool steels were measured in the basic annealed state and, subsequently, in the state after hardening and tempering. Experimental results show that tool steels, belonging to high strength steels, can successfully represent wear resistant steels. The content of carbide elements, their size, and shape in the microstructure play an important role in the friction process and subsequent wear. Three types of loads were used and compared in the experiments 30, 60, and 90 N. Increasing the load results in significant degradation of the material on the sample surface. Lastly, the impact of hardness and roughness of materials on wear has also been proven. If abrasive wear occurs in the friction process, there is a greater degree of wear than that of adhesive wear. This is due to less abrasive particles, which behave like a cutting wedge and are subject to subsequent deformation strengthening due to the load increase, which adversely affects the further friction process. Analysis of the results showed that the ZrO2 ceramic ball showed significantly better wear values when compared to the X46Cr13 stainless steel ball. It also improves the values of the coefficient of friction with respect to the type of wear that occurs when the experimental materials and counterparts are in contact.

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Section: Area Of Removed Materialsmentioning

confidence: 90%

Dry Sliding Friction of Tool Steels and Their Comparison of Wear in Contact with ZrO2 and X46Cr13

et al. 2020

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“…Copper-based self-lubricating materials not only have a low friction coefficient, high melting point, strong mechanical strength, and excellent machinability, but also have a simple manufacturing process and low cost, so it is widely used in automotive, aerospace, engineering machinery, and other fields [1][2][3]. For the traditional copper-tin-lead alloy, it has become the most widely used copper-based self-lubricating composite material, but its poor wear resistance and the lead will cause adverse effects on the human body and the environment, which limits its application and development [4,5].…”

Section: Introductionmentioning

confidence: 99%

Tribological performances of CuSn10Bi3 alloy containing MoSi2 and ferrophosphorus under starved lubrication

Yang

Zhao

et al. 2023

Materials Science and Technology

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The effects of molybdenum disilicide (MoSi2) and ferrophosphorus (FemPn) particles on the tribological properties of copper-tin bismuth (CuSn10Bi3) bimetallic bearing materials were studied in this paper. The samples of CuSn10Bi3 containing MoSi2 and/or FemPn were prepared by powder sintering technology and the metallographic structure of four kinds of self-lubricating copper alloy composite materials after sintering was observed. The tribological properties of the copper alloy composites under starved lubrication conditions were investigated and its worn surfaces and wear debris were discussed and analysed. The results show that the addition of MoSi2 and/or FemPn particles can effectively refine the grain size, optimise the grain boundary morphology, and improve the mechanical properties of the alloys. Under extreme working conditions, the hard particles reinforced copper-based alloy samples have better wear resistance and anti-seizure resistance. GRAPHICAL ABSTRACT

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Properties of lead-free copper matrix composites prepared through in situ Ni-coated FeS surface modification and mechanical alloying

Tong

Yin

et al. 2021

Journal of Alloys and Compounds

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Graphite and Nickel Containing Tin Bronze-Steel Bimetals as Lead Free Bearing Materials

Cited by 6 publications

References 16 publications

Dry Sliding Friction of Tool Steels and Their Comparison of Wear in Contact with ZrO2 and X46Cr13

Dry Sliding Friction of Tool Steels and Their Comparison of Wear in Contact with ZrO2 and X46Cr13

Tribological performances of CuSn10Bi3 alloy containing MoSi2 and ferrophosphorus under starved lubrication

Properties of lead-free copper matrix composites prepared through in situ Ni-coated FeS surface modification and mechanical alloying

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