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Metody koloidalne w otrzymywaniu zaawansowanych tworzyw ceramicznych

Szafran M., Falkowski P., Głuszek M., Kędzierska-Sar A., Żurowski R.

Szkło i Ceramika

2018

R. 69, nr 5

24--28

Stabilization of heavy metal particles in Al2O3-W suspensions

Kędzierska-Sar A., Falkowski P., Szafran M.

Archives of Metallurgy and Materials

2016

Vol. 61, iss. 3

1465--1470

Ceramic - metal composites are widely used materials in a whole world. There were invented many fabrication methods for those kind of materials, but still exists some problems which need to be fixed. Stability of high density metal particles (e.g. W, Mo, Nb) in ceramic-metal composite suspensions is one of crucial issues to be solved in order to obtain homogenous composite material with desired properties such as high fracture toughness, mechanical strength, hardness, wear resistance. In this paper, results of two different methods of stabilizing W particles in Al2O3 - W - H2O system were compared. The zeta potential by laser doppler electrophoresis, stability by static multiple light scattering and rheological behavior of prepared suspensions were analyzed. As a result application of hetero-flocculation effect was consider as a good way to obtain homogeneous dispersion of metal particles with a high density.