Slip casting of silicon nitride for pressureless sintering

Direct inkjet printing of Si3N4: Characterization of ink, green bodies and microstructure

“…Today various forming methods such as slip casting, tape casting, pressure injection moulding and cold-isostatic pressing followed by green machining are available. 4,5 These methods enable the production of components with complex geometries, but generally parts need further machining in order to fulfil the request for net shape contours. * Corresponding author.…”

Development of Silicon Nitride‐Based Ceramic Radomes — A Review

“…As the properties of a material strongly depend on the fabrication method, different sintering techniques have been developed . The most common sintering methods to densify Si 3 N 4 ‐based ceramics are: reaction bonding (RBSN), hot pressing (HPSN), sintering (SSN), sintering reaction bonding (SRBSN), hot isostatic pressing (HIPSN), gas‐pressure sintering (GPSN), and pressureless sintering (PLS) . The thermomechanical properties of Si 3 N 4 materials are shown in Table .…”

“…To obtain excellent wave‐transparent properties for high‐speed radome materials, ε and tan δ should be less than 4.0 and 0.01, respectively. Near‐net shape ceramics are commonly produced through forming techniques such as tape casting, slip casting, pressure casting, freeze casting, cold isostatic pressing, direct coagulation casting, electrophoretic casting, hydrolysis‐assisted solidification, injection molding, and gelcasting . In each of these techniques, the ceramic powder is suspended in liquid‐binder system for shaping and all these forming methods start with a suspension where the ceramic particles are mixed with solvent, proper dispersant and possibly further additives such as binders, plasticizers, and antifoaming agents so as to produce well‐dispersed, nonagglomerated ceramic slurry .…”

Near-net-shape processed ZnS ceramics by aqueous casting and pressureless sintering

“…Slip casting is a simple and facile technique to fabricate ceramic components into pre-designed shapes. In the past few decades, slip casting has been adopted into various ceramic systems, such as Al 2 O 3 , SiC, Si 3 N 4 and ZrB 2 , et al [13][14][15][16]. Up till now, very few studies have been focused on the slip casting of ZnS, which is quite promising due to its advantages as described above.…”