| abstract |
The invention discloses a gel casting molding method for preparing a silicon nitride ceramic substrate. The technical method adds silicon nitride powder, gel monomer, crosslinking agent, dispersant, plasticizer and the like into an alcohol organic solvent Inside, after thorough mixing, defoaming, adding initiator, and casting molding. The innovation of this technical method lies in the organic combination of sol-gel molding and casting process molding, giving full play to their respective advantages, which can significantly increase the green density of the silicon nitride substrate, which is beneficial to the subsequent sintering to be denser and oxygen-containing. It can reduce the amount and improve the thermal conductivity of the product; it can achieve rapid solidification of the green body, improve the efficiency of tape casting, and is environmentally friendly. |