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

Stefan GHEORGHE¹

Cristina TEISANU¹
cteisanu@yahoo.com

Andreas MERSTALLINGER²

Ion CIUPITU<sup>1


1</sup> 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

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