The introduction of main products   （Si₃N₄）:

· chemical engineering pump-used and caldron-used mechanical seal ring.
· The products of all kinds of shaft, bushing, plunger, cylinder, bearing and so on.
· Temperature-measuring thermocouple sleeve pipes, all kinds of airflow pipes and sand-blast pipes of high temperature endurable, corrosion endurable, deterioration endurable and so on.
· All kinds of mechanical spares and blades of corrosion endurable, high temperature endurable, deterioration endurable and so on.
·  
 

Material name	Volume densityg/cm3	HardoessHRA	Bending strengthMPa	Air hole rate%	Thermal expansion coefficient1×10-6/C0	Breaking tenacity
SI3N4(RB)	2.5-2.6	80-86	160-210	10-15	2.53	2.8
SI3N4(G.P.S)	3.2-3.3	90-93	500-700	＜1	3.5	7

 

The silicon nitride engineering ceramic is a new-type modern engineering material, which has a lot of excellent performance. Such as high-intensity high hardness strong corrosin endurable, high temperature and so on. So it is widely used in the fields of metallurgy, chemical engineering machinery, aerospace and so on. Which in the flgure are all kinds of azotized silicon products.