Microstructure and properties of the Al2O3-Ti3AlNb composites.

• Autorzy: Samsel K. , Garbacz H. , Kurzydłowski K.J.
• Języki publikacji: EN

Abstrakty

EN

The study was concerned with the Al2O3-Ti3AlNb composites produced by powder metallurgy. The microstructures of the sintered composites were described qualitatively and quantitatively. The physical and mechanical properties of the samples examined during the experiments included: porosity, hardness, elastic modulus and brittle toughness. It has been shown that the properties of the composites depend not only on their constituents but also on the particular features of their microstructural structure, which in turn depend on the technology employed. The properties of the composites appeared to be intermediate between those of ceramics and those of alloys with intermetallic matrix. They depend, in a non-linear way, on the volumetric shares of the ceramics and the specific surface area of the phase boundaries. The deviations from the linear theory of mixing can be explained in terms of the disintegrated intermetallic precipitates and pores. It has also been found that with increasing volumetric share of the ceramic material, the sizes of the pores and of the intermetallic particles decrease, whereas their shapes remain almost unchanged.

Słowa kluczowe

EN

microstructure; composite; sintered composites; physical properties; mechanical properties; phase boundaries; ceramics; intermetallic alloy

PL

mikrostruktura; kompozyt; kompozyt spiekany; właściwości fizyczne; właściwości mechaniczne; granica faz; ceramika; stopy międzymetaliczne

• Wydawca: Komitet Nauki o Materiałach PAN
• Czasopismo: Archives of Materials Science
• Rocznik: 2005
• Tom: Vol. 26, nr 3
• Strony: 207--219
• Opis fizyczny: Bibliogr. 9 poz.

Twórcy

autor

Samsel K.

• Warsaw University of Technology, Faculty of Materials Science and Engineering, Wołoska 141, 02-507 Warsaw

autor

Garbacz H.

• Warsaw University of Technology, Faculty of Materials Science and Engineering, Wołoska 141, 02-507 Warsaw

autor

Kurzydłowski K.J.

• Warsaw University of Technology, Faculty of Materials Science and Engineering, Wołoska 141, 02-507 Warsaw

Bibliografia

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• [3] H. Garbacz, Surface modification Technologies - Proceedings, XIV, 535 (2001).
• [4] H. Garbacz, M. Lewandowska, Materials Chemistry and Physics, 9830, 1 (2003).
• [5] T. Wejrzanowski, MicroMeter - M.Sc. Thesis, Warsaw University of Technology (2000).
• [6] J. Lis, R. Pampuсh, „Spiekanie", (2000), p. 11-322.
• [7] K.J. Kurzydłowski, В. Ralph, The Quantitative Description of the Microstructure of Materials, CRC Press (1995).
• [8] В. Вozzini, M. Вoniardi, Zeitschrift fur Metallkunde, 88, 493 (1997), p. 493-497.
• [9] M. Вoniardi, G.C. Martinelli, В. Вozzini, 11TH Congress of the International Federation For Heat Treatment and Surface Engineering, Florence Italy, 361 (1998), p. 361-368.