The influence of strontium addition on the tribological properties of Zn25Al3Si 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 Zn25Al3Si 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:
Proceedings of the International Conference on Materials, Tribology, Recycling – MATRIB 2014, 2014, 609-616Funding / projects:
- CEEPUS network CIII-BG-0703
- 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 - CONF AU - Vencl, Aleksandar AU - Bobić, Ilija AU - Vučetić, Filip AU - Bobić, Biljana AU - Kandeva, Mara PY - 2014 UR - https://machinery.mas.bg.ac.rs/handle/123456789/4341 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 Zn25Al3Si 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. C3 - Proceedings of the International Conference on Materials, Tribology, Recycling – MATRIB 2014 T1 - The influence of strontium addition on the tribological properties of Zn25Al3Si alloy in boundary lubricated condition EP - 616 SP - 609 UR - https://hdl.handle.net/21.15107/rcub_machinery_4341 ER -
@conference{ author = "Vencl, Aleksandar and Bobić, Ilija and Vučetić, Filip and Bobić, Biljana and Kandeva, Mara", 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 Zn25Al3Si 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 = "Proceedings of the International Conference on Materials, Tribology, Recycling – MATRIB 2014", title = "The influence of strontium addition on the tribological properties of Zn25Al3Si alloy in boundary lubricated condition", pages = "616-609", url = "https://hdl.handle.net/21.15107/rcub_machinery_4341" }
Vencl, A., Bobić, I., Vučetić, F., Bobić, B.,& Kandeva, M.. (2014). The influence of strontium addition on the tribological properties of Zn25Al3Si alloy in boundary lubricated condition. in Proceedings of the International Conference on Materials, Tribology, Recycling – MATRIB 2014, 609-616. https://hdl.handle.net/21.15107/rcub_machinery_4341
Vencl A, Bobić I, Vučetić F, Bobić B, Kandeva M. The influence of strontium addition on the tribological properties of Zn25Al3Si alloy in boundary lubricated condition. in Proceedings of the International Conference on Materials, Tribology, Recycling – MATRIB 2014. 2014;:609-616. https://hdl.handle.net/21.15107/rcub_machinery_4341 .
Vencl, Aleksandar, Bobić, Ilija, Vučetić, Filip, Bobić, Biljana, Kandeva, Mara, "The influence of strontium addition on the tribological properties of Zn25Al3Si alloy in boundary lubricated condition" in Proceedings of the International Conference on Materials, Tribology, Recycling – MATRIB 2014 (2014):609-616, https://hdl.handle.net/21.15107/rcub_machinery_4341 .