Affiliation:
1. Faculty of Technology and Metallurgy, Belgrade
2. Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade
Abstract
For the development of the Lost Foam refractory coatings with controlled
rheologic properties, the influence of the mechanical activation process on
the cordierite-based filler?s properties change was examined. First of all,
the test referred to the change of filler particles? size and shape, as well
as to dispersion ability and stability of the coating suspension. Cordierite
was obtained by synthesis in a solid state, out of the mass consisting of
kaoline, alumina, quartz, sepiolite. For characterization purposes, the
following methods were used: X-ray diffraction, differential thermal
analysis, SEM and optical microscopy. Mechanical activation of filler was
performed in a vibrating mill. The upper boundary of the grain size was 100%
-30 x 10-6 m, the times were (min): 15; 30; 60. The new composition of Lost
foam refractory coatings has been developed with a change of the coating
production process, as well. These newly synthesized coatings proved to be
effective in terms of a positive influence on a surface quality, structural
and mechanical properties of aluminium castings. Test results may be useful
to have the Lost Foam refractory coatings specified together with other
process parameters used for the production of castings according to this
casting method.
Funder
Ministry of Education, Science and Technological Development of the Republic of Serbia
Publisher
National Library of Serbia
Subject
Materials Chemistry,Metals and Alloys,Condensed Matter Physics,Ceramics and Composites
Cited by
3 articles.
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