Preliminary communication

Porous ceramic - metal composites obtained by infiltration methods

A. Boczkowska ; Warsaw University of Technology, Faculty of Materials Science and Engineering, Warsaw, Poland
P. Chabera ; Warsaw University of Technology, Faculty of Materials Science and Engineering, Warsaw, Poland
A. J. Dolata ; Silesian University of Technology, Faculty of Materials Science and Metallurgy, Katowice, Poland
M. Dyzia ; Silesian University of Technology, Faculty of Materials Science and Metallurgy, Katowice, Poland
A. Oziębło ; Institute of Ceramics and Construction Materials, Katowice, Poland

Abstract

A pressure-vacuum infiltration (T = 720 ºC, p = 15 MPa, t = 15 min) and gas-pressure infiltration (GPI) in an autoclave (T = 700ºC, p=4 MPa, t=5 min) were applied for infiltration of porous Al₂O₃ ceramics by cast aluminum alloy. Effect of the method of the infiltration on the microstructure and mechanical properties of ceramic-metal composites, was studied. Ceramic preforms were formed by method of copying the cellular structure of the polymer matrix. The results of the X-ray tomography proved very good infiltration of the pores by the metal for each method.

Keywords

porous ceramics; cast aluminum alloy; composite; pressure infiltration

Hrčak ID:

95773

URI

https://hrcak.srce.hr/95773

Publication date:

1.7.2013.

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