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THE INFLUENCE OF THE SINTERING ATMOSPHERES ON THE WEAR BEHAVIOUR OF COPPER BASED ALLOYS


Stefan GHEORGHE1

Cristina TEISANU1
cteisanu@yahoo.com

Andreas MERSTALLINGER2

Ion CIUPITU1


1 University of Craiova, Faculty of Mechanics, Dept. of Technologies & Materials, ROMANIA
2 Austrian Research Centre Seibersdorf, AUSTRIA


 

Abstract. The Powder Metallurgy (PM) technique allows the manufacturing of sintered self-lubricating materials having a high wear resistance. It is well known that the small and medium size bearings are processed by PM with better characteristics than those obtained by casting. The tested materials are Cu-based, having Sn, Zn, and Pb as alloying elements to improve the tribological properties. These alloys are designed to be used for manufacturing self-lubricating bearings. The alloy compositions were obtained by cold die compacting, using different pressures. The sintering was performed in vacuum. The wear test was performed for four ring samples on a ball on pin tester, the test atmosphere being vacuum and normal air.

 

 

Keywords: sintered bearings, sintering atmosphere, wear behaviour, linear wear

 

 

References

  1. Gheorghe, St., Teisanu, C., and Ciupitu, I., 2005, Some Aspects Regarding Wear Test of Some PM Antifriction Copper Based Alloys, Proc. of the 4th Int. Conf. on Sci., Tech. and Applications of Sintering, 1, pp. 421-423.

  2. Gheorghe, St., Teisanu, C., and Ciupitu, I., 2005, Some Aspects Regarding Wear Test of Some PM Antifriction Copper Based Alloys, Third Int. Conf. on PM, RoPM, 871.

  3. Teişanu C., Gheorghe St., and Ciupitu I., 2005, Hardness Optimization of the Iron Base Self-Lubricating Bearings, Euro PM2005 - European Congress and Exhibition on Powder Metallurgy, Praga, Cehia, 2-5 october, vol.2, pg. 185-190.

  4. Gheorghe, St., Ciupitu, I., Merstallinger, A., and Kladler, G., 2004, Friction And Wear Behavior Of Iron-Copper Sintered Alloys, European Powder Metallurgy Association (EPMA), International Powder Metallurgy Congress & Exhibition, Euro PM2007, vol. 4, pp. 769-774.

  5. Gheorghe, S., Ciupitu, I., Mangra, M., and Teisanu, C., 2001, Wear Resistant Alloys with Low Tin Content, European Congress and Exhibition on Powder Metalurgy, Nice, France, 22-24 October.