Silicon Nitride Ceramic Bearing Bushing/INNOVACERA

Silicon nitride offers one of the best combinations of toughness and hardness of commercially available ceramics. In addition, its low thermal expansion coefficient offers superb thermal shock resistant compared with most other ceramics. 

Complex geometries can be made with sintered material. The material also exhibits low density, high temperature strength, excellent wear resistance and good facture toughness.

Property	SSN GPS-SSN HPSN RBSN
Density (-3)	3.28 3.30 3.23 2.5
Young's Modulus (GPa)	285 320 315 189
Bend Strength (MPa)	675 750 850 440
Fracture Toughness K1c (MPa.m0.5)	6 7 8 2.5
Hardness (GPa)	16 16 16 7.2
Thermal Expansion Coefficient (x 10-6/°C)	3.2 3.2 3.2 3.2
Thermal Conductivity (W/m.K)	25 30 30 14
Maximum Temperature (°C) for application Dielectric Constant Abrasive Wear resistance Parameter	1150 1150 1150 1100 9 9 9 7.5 1110 1130 1120 360

Features:
Good thermal shock resistance
Creep resistance
Low density
High fracture toughness
High hardness and wear resistance
Electrical resistivity

Application:
Diesel engine glow plugs

Rocker arm pad

Ceramic ball bearings

Check Valves for Oil Well Applications

Resistance Welding Fixtures

Sand blasting nozzles

MWD wear parts in Oil Well Drilling

Poppet valves

Guide rollers for steel rods and cable

Molten Aluminum Nozzles and trim

Valve Trim

Manufacturing Options:

• Injection molding
• Roll compacting
• Co-firing
• Isostatic pressing
• Dry pressing
• Hot pressing
• Tape casting
• Slip casting

 

Advanced Finishing Service:

• Precision grinding and lapping
• Laser machining
• Engineering design and support
• Metallizing
• Alumina Ceramics-to-metal brazing
• Threaded components
• Precision motion components