Mechanical properties of silver matrix composites reinfroced with ceramic particles

• Autorzy: Śleziona, J. , Wieczorek, J. , Dyzia, M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Silver, silver alloys, as well as silver matrix based composites have been well known and applied in the electrotechnical and electronics industry for several decades. For many applications in electrotechnology, including electric contacts and brushes, unreinforced sliver alloys do not meet the requirements concerning mainly durability and wear resistance, first of all to tribological and electroerosive wear. These wear processes may be prevented by introducing to silver reinforcement particles and alloys. The target of the research included basic mechanical properties determination of the silver matrix composites reinforced with ceramic particles, manufactured with the use of suspension methods. Design/methodology/approach: In the presented paper the authors demonstrate possibilities of manufacturing of silver matrix composites on the way of casting technology utilization. Findings: The results of the research prove that applied suspension technology, based on introducing of agglomerated foundry alloy which is the carrier for reinforcement particles (SiC lub Al2O3) allows to produce in an effective and, what is important, in an economically attractive way, sliver alloys based composites. Research limitations/implications: The researches on the structure of manufactured composites and their mechanical properties that are presented in the paper prove the possibilities of mechanical mixing technology application for producing mechanical and stable connection between silver matrix and ceramic particles of aluminium oxide and silicon carbide. Originality/value: The manufacturing of this type of composites is based most of all on the utilization of powder metallurgy techniques. However the obtained results of the research prove that there is a possibility of silver matrix composites forming in the casting and plastic working processes. Extrusion process carried out in the hydraulic press KOBO has its favourably influence on ceramic reinforcement distribution, providing even distribution particles in matrix.

Słowa kluczowe

PL

kompozyt; właściwości mechaniczne; projektowanie materiałów; odlewanie

EN

composite; mechanical properties; materials design; casting

• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 17, nr 1-2
• Strony: 165--168
• Opis fizyczny: Bibliogr. 10 poz., rys., tab., wykr.

Twórcy

autor

Śleziona, J.

• Faculty of Materials Science and Metallurgy, Silesian University of Technology, ul. Krasińskiego 8, 40-019 Katowice, Poland

autor

Wieczorek, J.

• Faculty of Materials Science and Metallurgy, Silesian University of Technology, ul. Krasińskiego 8, 40-019 Katowice, Poland,

autor

Dyzia, M.

• Faculty of Materials Science and Metallurgy, Silesian University of Technology, ul. Krasińskiego 8, 40-019 Katowice, Poland

Bibliografia

• [1] J. Śleziona, J. Wieczorek, A. Dolata-Grosz: Manufacturing and structure of silver alloys reinforced with particles, VI Conference of precious metals, Kraków-Zakopane 2005, s. 52 (in polish).
• [2] W. Głuchowski, Z. Rdzawski: Silver alloys of heighten properties, VI Conference of precious metals, Kraków-Zakopane 2005, s. 73 (in polish).
• [3] B.J. Wang, N. Saka: Spark erosion behavior of silver – based particulate composites, Wear No. 195, pp. 133-147, 1996
• [4] Shou-Yi Chang, Su-Jien Lin, M.C. FLEMINGS: Thermal Expansion Behavior of Silver Matrix Composites, Metallurgical and Materials Transactions, vol. 31A, January 2000.
• [5] J. Stobrawa, Z. Rdzawski: Silver – perspectives of application, V Conference of precious metals, Kraków-Zakopane 2004, s.74 (in polish).
• [6] D.M. Liu, W.H. Tuan: Microstructure and thermal conduction properties of Al2O3 - Ag composites, Acta mater. Vol 44, No. 2, pp. 813-818, 1996.
• [7] Shou-Yi Chang, Chia-Jung Hsu, Cher-Hao Hsu, and Su-Jien Lin: Investigation on the arc erosion behavior of new silver matrix composites: Part I. Reinforced by particles, Materials Science and Engineering, 2003.
• [8] S. Behrouz, J. Ilsted, E. Morten, W.G. Wang, B. Niels: Manufacturing of superconductine silver/ceramic composites, Materiale- og Procesteknologi, No 49, pp. 185-189, 2000.
• [9] Technical Tidbits, Brush Wellman, Silver as a Contact Material, VOL. 4, No. 9 September 2002
• [10] J. Wieczorek, J. Śleziona, A. Dolata-Grosz: Ag-ceramic particles composites obtained by liquid phase technologies. Casting Archives, 2006 (in polish).