The influence of strontium addition on the tribological properties of Zn25Al1Si alloy in boundary lubricated condition
Abstract
The zinc-aluminium based casting alloy ZA-27 is well-established alloy and is frequently used materials for sleeves of plain bearings. It has good physical, mechanical and tribological properties. However, one of the major disadvantages is its dimensional instability over a period of time (ageing). To overcome this, the copper in the alloy may be replaced by silicon. Coarsening of the silicon particles is controlled by suitable additions of strontium. The influence of the strontium addition on friction and wear properties in boundary lubricated conditions was done on block-on-disc tribometer. The tests were carried-out for three Zn25Al1Si alloys with variable strontium content (0 wt. %, 0.03 wt. % and 0.05 wt. %), and, for the purpose of comparison, for standard ZA-27 alloy. Tests have confirmed that the wear rate of zinc-aluminium alloys with silicon is lower than the standard ZA-27, and have shown that the strontium addition lowers that rate additionally, with the slight increase of ...the coefficient of friction.
Keywords:
Zn-Al alloys / strontium addition / sliding / boundary lubrication / friction / wearSource:
Tribological Journal BULTRIB, 2014, 4, 25-30Funding / projects:
- Investigation and Optimization of the Technological and Functional Performance of the Ventilation Mill in the Thermal Power Plant Kostolac B (RS-MESTD-Technological Development (TD or TR)-34028)
- Development of the tribological micro/nano two component and hybrid selflubricating composites (RS-MESTD-Technological Development (TD or TR)-35021)
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Institution/Community
Mašinski fakultetTY - JOUR AU - Vencl, Aleksandar AU - Bobić, Ilija AU - Vučetić, Filip AU - Bobić, Biljana PY - 2014 UR - https://machinery.mas.bg.ac.rs/handle/123456789/4311 AB - The zinc-aluminium based casting alloy ZA-27 is well-established alloy and is frequently used materials for sleeves of plain bearings. It has good physical, mechanical and tribological properties. However, one of the major disadvantages is its dimensional instability over a period of time (ageing). To overcome this, the copper in the alloy may be replaced by silicon. Coarsening of the silicon particles is controlled by suitable additions of strontium. The influence of the strontium addition on friction and wear properties in boundary lubricated conditions was done on block-on-disc tribometer. The tests were carried-out for three Zn25Al1Si alloys with variable strontium content (0 wt. %, 0.03 wt. % and 0.05 wt. %), and, for the purpose of comparison, for standard ZA-27 alloy. Tests have confirmed that the wear rate of zinc-aluminium alloys with silicon is lower than the standard ZA-27, and have shown that the strontium addition lowers that rate additionally, with the slight increase of the coefficient of friction. T2 - Tribological Journal BULTRIB T1 - The influence of strontium addition on the tribological properties of Zn25Al1Si alloy in boundary lubricated condition EP - 30 SP - 25 VL - 4 UR - https://hdl.handle.net/21.15107/rcub_machinery_4311 ER -
@article{ author = "Vencl, Aleksandar and Bobić, Ilija and Vučetić, Filip and Bobić, Biljana", year = "2014", abstract = "The zinc-aluminium based casting alloy ZA-27 is well-established alloy and is frequently used materials for sleeves of plain bearings. It has good physical, mechanical and tribological properties. However, one of the major disadvantages is its dimensional instability over a period of time (ageing). To overcome this, the copper in the alloy may be replaced by silicon. Coarsening of the silicon particles is controlled by suitable additions of strontium. The influence of the strontium addition on friction and wear properties in boundary lubricated conditions was done on block-on-disc tribometer. The tests were carried-out for three Zn25Al1Si alloys with variable strontium content (0 wt. %, 0.03 wt. % and 0.05 wt. %), and, for the purpose of comparison, for standard ZA-27 alloy. Tests have confirmed that the wear rate of zinc-aluminium alloys with silicon is lower than the standard ZA-27, and have shown that the strontium addition lowers that rate additionally, with the slight increase of the coefficient of friction.", journal = "Tribological Journal BULTRIB", title = "The influence of strontium addition on the tribological properties of Zn25Al1Si alloy in boundary lubricated condition", pages = "30-25", volume = "4", url = "https://hdl.handle.net/21.15107/rcub_machinery_4311" }
Vencl, A., Bobić, I., Vučetić, F.,& Bobić, B.. (2014). The influence of strontium addition on the tribological properties of Zn25Al1Si alloy in boundary lubricated condition. in Tribological Journal BULTRIB, 4, 25-30. https://hdl.handle.net/21.15107/rcub_machinery_4311
Vencl A, Bobić I, Vučetić F, Bobić B. The influence of strontium addition on the tribological properties of Zn25Al1Si alloy in boundary lubricated condition. in Tribological Journal BULTRIB. 2014;4:25-30. https://hdl.handle.net/21.15107/rcub_machinery_4311 .
Vencl, Aleksandar, Bobić, Ilija, Vučetić, Filip, Bobić, Biljana, "The influence of strontium addition on the tribological properties of Zn25Al1Si alloy in boundary lubricated condition" in Tribological Journal BULTRIB, 4 (2014):25-30, https://hdl.handle.net/21.15107/rcub_machinery_4311 .