Silicon Nitride Ceramic Protection Tube for Molten Aluminum

Silicon Nitride Ceramic Protection Tube for Molten Aluminum

Silicon Nitride Substrate Materials Description: Silicon Nitride (Si3N4) has good high temperature strength, creep resistance and oxidation resistance.In addition, its low thermal expansion coefficient gives excellent thermal shock resistance compared with most ceramic materials. The fact that this ceramic material is an extremely low-friction and non-magnetic material with a very low specific weight, excellent dry running properties and therefore superior emergency operating features is what makes it the material of choice for demanding applications,like ceramic bearing. Silicon Nitride Ceramic Protection Tube for Molten Aluminum
Silicon Nitride Ceramic Properties
Color:	Gray and Gray-black
Density:	3.24~3.28 g/cm3
Vickers Hardness:	14 Gpa
Maxium Use Temperature:	1500 ℃
Thermal Conductivity:	22-42 W.(M.K)-1
Bending Strength:	≥ 900 Mpa
Fracture Toughness:	6~8 (Mpa.m1/2)
Thermal Expansion Coefficient (at 0~1400℃):	2.95~3 ×10-6/℃

Application of silicon nitride ceramics:
Silicon nitride ceramic parts work as welding pins, Ceramic Shafts, Ceramic bearings, Ceramic substrates, Ceramic piston plungers, Ceramic sliders, Ceramic seal ring, Air turbine blades which are widely used in machinery, electronics, semiconductor, petroleum, chemical industry, smelting, and other industries