Abstract
This study aimed to investigate and optimise the rheological behaviour and gel-casting parameters of Si suspensions prepared to fabricate RBSN bodies. Si green bodies with 30vol% solid content possessing roughly 40MPa flexural strength and 50vol% porosity. The gelation time decreases by heating, and the Si gel-cast body dried in PEG1000 solution shows less than 2% shrinkage. Based on FESEM analysis and adsorption-desorption of nitrogen gas, the final Si bodies show open pores and uniform distribution.
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