Effects of binding agents in the production of SiC ceramic foam filters with replica method
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Date
2021-10-01
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JOURNAL OF CERAMIC PROCESSING RESEARCH
Abstract
In this study, casting filter production parameters were investigated by coating SiC with superior mechanical and chemical
properties on polyurethane sponge. Many methods in which SiC filters are produced have been researched and considering
its simple applicability, the replication method has been chosen as the production method. In the experiments, polyurethane
sponges with different porosities were coated with varying proportions of water, bentonite, gum arabic and SiC, and then
subjected to pyrolysis and sintering. The characterization of the samples was carried out by weight loss, compression test,
Archimedes scale and SEM methods. According to the test results, the highest weight loss was obtained with 46% by adding
30 mL of water into 30 ppi polyurethane sponge. In the sintering tests, the highest strength was obtained with the value of 472
kPa in the experiment performed at 1,450 ºC. The same sample gave the optimum result with a density of 3.101 g/cm3
and
porosity of 1.24%. At the end of the study, the samples produced successfully were used in the real casting process and it was
observed that they were effective in filtering..
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Keywords
Filter, SiC, Sintering, Refractories, Ceramic Foams.
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