Silicon nitride bonded silicon carbide
Si3N4 bonded SiC ceramic refractory material, is mixed with high pure SIC fine powder and Silicon powder, after slip casting course, reaction sintered under 1400~1500°C. During the sintering course, filling the high pure Nitrogen into the furnace, then the silicon will react with Nitrogen and generate Si3N4,So Si3N4 bonded SiC material is composed of silicon nitride (23%) and silicon carbide(75%) as main raw material,mixed with organic material,and shaped by mixture, extrusion or pouring,then made after drying and nitrogenization.
Features and advantages:
1. High temperature tolerance
2.High thermal conductivity and shock resistance
3.High mechanical strength and abrasion resistance
4.Excellent energy efficiency and corrosion resistance
We provide high quality and precision machined NSiC ceramic components which process by
1.Slip casting
2.Extruding
3.Uni Axial Pressing
4.Isostatic Pressing
Material Datasheet
| >Chemical Composition | Sic | 75% |
| Si3N4 | ≥23% | |
| Free Si | 0% | |
| Bulk density (g/cm3) | 2.70～2.80 | |
| Apparent porosity (%) | 12～15 | |
| Bend strength at 20 ℃(MPa) | 180～190 | |
| Bend strength at 1200 ℃(MPa) | 207 | |
| Bend strength at 1350 ℃(MPa) | 210 | |
| Compressive strength at 20 ℃(MPa) | 580 | |
| Thermal conductivity at 1200 ℃(w/m.k) | 19.6 | |
| Thermal expansion coefficient at1200 ℃(x 10-6/C) | 4.70 | |
| Thermal shock resistance | Excellent | |
| Max. temperature (℃) | 1600 | |
WeiTai Energy Technology Co., Ltd. is a leading supplier of advanced semiconductor ceramics and the only manufacturer in China that can simultaneously provide high-purity silicon carbide ceramic(especially the Recrystallized SiC) and CVD SiC coating. In addition, our company is also committed to ceramic fields such as alumina, aluminum nitride, zirconia, and silicon nitride, etc.
Our main products including: silicon carbide etching disc, silicon carbide boat tow, silicon carbide wafer boat(Photovoltaic&Semiconductor), silicon carbide furnace tube, silicon carbide cantilever paddle, silicon carbide chucks, silicon carbide beam, as well as the CVD SiC coating and TaC coating. The products mainly used in the semiconductor and photovoltaic industries, such as equipment for crystal growth, epitaxy, etching, packaging, coating and diffusion furnaces,etc.
Our company has the complete production equipment such as molding, sintering, processing , coating equipment, etc., which can complete all the necessary links of product production and have higher controllability of product quality; The optimal production plan can be selected according to the needs of the product, resulting in lower cost and providing customers with more competitive products; We can flexibly and efficiently schedule production based on order delivery requirements and in conjunction with online order management systems, providing customers with faster and more guaranteed delivery time.
