Influence of material of friction partner on tribological properties of heterophase composites
Jakub Wieczorek*, Józef Śleziona, Anna Dolata-Grosz, Jerzy Myalski Politechnika Śląska, Wydział Inżynierii Materiałowej i Metalurgii, Katedra Technologii Stopów Metali i Kompozytów, ul. Krasińskiego 8, 40-019 Katowice, Poland
Quarterly No. 1, 2008 pages 5-10
DOI:
keywords: aluminium alloy, heterophase reinforcement, centrifugal casting, tribological properties
abstract The paper presents the results of the tribological properties investigations of aluminium matrix composite (AK12) with ceramic reinforcement. The composite reinforced by the silicon carbide particles (AK12/SiC) and by the mixture of the silicon carbide and amorphous glassy carbon particles (AK12/SiC+C) were subjected of investigations. For the heterophase composites glassy carbon particles was applied to modify frictional properties. The investigations were conducted with the use of tribological tester T-01. The three different kind of frictional partners of materials were used for composites: cast iron, Duralcan F3K.15S composite with SiC particles and Duralcan W6A.15A composite with Al2O3 particles. The structure of heterophase composite containing SiC and glass carbon particles have been shown. The results of the friction coefficient and wear investigations allowed assessing the influence of the glassy carbon addition on the tribological characteristics change. It was stated that the replacement of the parts of the reinforcement with the glassy carbon particles caused the friction coefficient as well as the wear of the heterophase composite reduction and materials cooperating with them. In the paper make estimation the influence of glassy carbon particles on surface work geometry, too. At the same time it could be stated that the application for the composite products shaping centrifugal casting technology may have triggered vertical diversification in the reinforcing particles distribution and following on from this diverse tribological properties depending on the place of the sample taking. Gotten results permitted to state, that there is possibility of tribological properties of composites shaping by the through the change of kind and size reinforcement particles about different physicochemical characteristics. It allows to widening possibilities of designing the tribological properties of frictional associations.