| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1641037 | Materials Letters | 2016 | 4 Pages |
•Mixing time strongly affects the rate of silica formation and hydrogen release.•The way of gelation influences the quality and shrinkage of the Si GC body.•Using desiccant solution for drying process prepares the body free of crack and warpage.
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 30 vol% solid content possessing roughly 40 MPa flexural strength and 50 vol% 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.
