Silicon Nitride Ceramic Bushing for Heavy-Duty Diesel Engines

• Application: Aerospace, Electronics, Medical, Refractory, Structure Ceramic
• Type: Ceramic Parts
• Compressive Strength: 3200
• Flexural Strength: 480
• Color: Black
• Vickers Hardness: 24
• Model NO.: A Silicon Nitride Ceramic
• Water Absorption: 0
• Processing Service: Moulding
• Max Working Temperature: 1000ºC
• Transport Package: Carton Packing
• Specification: Customized
• Trademark: INNOVACERA
• Origin: Fujian, China
• Production Capacity: 30000 Piece/Pieces Per Month

Product Description

 

Si3N4 Silicon Nitride Ceramic Bushing

Silicon nitrides (Si3N4) feature an excellent combination of material properties. They are nearly as light as silicon carbide (SiC), but their microstructure gives them excellent thermal shock resistance and their high fracture toughness makes them resistant to impacts and shocks.

 

Properties of Silicon Nitride (Si3N4):
* Very low density (3.21 g/cm3)
* Very high fracture toughness (7 MPam1/2)
* Good flexural strength (850 MPa)
* Very good thermal shock resistance: High thermal stress parameters (569 K)
* Maximum operating temperature in an oxidizing atmosphere: 1,300°C
* Maximum operating temperature in a neutral atmosphere: 1,600°C

Silicon Nitride Typical Uses:

• Rotating bearing balls and rollers
• Cutting tools
• Engine moving parts - valves, turbocharger rotors
• Engine wear parts - cam followers, tappet shims
• Turbine blades, vanes, buckets
• Metal tube forming rolls and dies
• Precision shafts and axles in high wear environments
• Weld positioners

Silion Nitride Ceramic Properties
Properties			Units	Silicon Nitride (Si3N4)
						HPSi3N4	GPSi3N4
Mechanical	Density	g/cm3	3.24~3.28	3.24~3.26
		Color	--	Gray	Gray
		Water Absorption	%	0	0
		Vickers Hardness	Gpa	14	14
		Flexural Strength(20°C)	Mpa	850-900	750-800
		Compressive Strength(20°C)	Mpa	3000	3000
Thermal	Thermal Conductivity(20°C)	W/m.K	42	22
		Thermal Shock Resistance(20°C)	Δ T(C)	617	605
		Maximum Use Temperature	°C	1500	1500
Electrical	Volume Resistivity(25°C)	Ω.cm	--	--

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