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Development of a Foaming Process for Particulate Reinforced Aluminum Melts
Author(s) -
Leitlmeier D.,
Degischer H.P.,
Flankl H.J.
Publication year - 2002
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/1527-2648(20021014)4:10<735::aid-adem735>3.0.co;2-y
Subject(s) - materials science , microstructure , aluminium , scanning electron microscope , composite material , particulates , ceramic , particle (ecology) , blowing agent , particle size distribution , particle size , chemical engineering , ecology , biology , oceanography , polyurethane , engineering , geology
This paper reports on investigations by Hütte Klein‐Reichenbach and LKR in the course of the development of a new processing technique for cellular aluminum, to produce net shape parts of foamed aluminum via the melt route by gas injection. The foaming depends on the interaction between the blowing gas, the ceramic particles, and the melt. The stabilization of the foam by different particle contents in interaction with air, oxygen and nitrogen as blowing gas has been investigated for some matrix alloys with respect to the processing parameters. The resulting cell structure is characterized by computed X‐ray tomography, light optical and scanning electron, as well as high resolution Auger electron microscopy. The microstructure of the cell walls is presented as well as the achieved pore size and the local mass density distribution.