Silicon Nitride

 

Silicon nitride is a high temperature structural ceramic with exceptional strength and resistance to thermal shock. It can also be used as an electronic thin film material for applications such as optical coatings, insulating layers, and diffusion barriers. 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.

 

 

 

	Unit	SN1000	SN2000	SN3000	SN4000
Thermal Conductivity @ 20°C	W/mK	25	24	25	28
Thermal Shock Parameter R1	K	558	748	590-620	700
Thermal Shock Parameter R2	W/m	14	18	15	19
CTE1 25°C ➞ 250°C	10-6/K	1.9	1.9	1.9	1.9
CTE1 25°C ➞ 1000°C	10-6/K	3.2	3.2	3.2	3.2
Maximum Temperature (Inert) 2	°C	1400	1400	1400	1400
Maximum Temperature (Oxidizing) 2	°C	1200	1200	1200	1200

 

Properties of Silicon Nitride (Si3N4)

Very low density (3.21 g/cm³)

Very high fracture toughness (7 MPam^1/2)

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

 

 

 

 

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A: If you need a samples from our stock, we can provide to you for free, but the free charge should be on your side. If you need a special size, We will charge the sample making fee which will be refund when you place an order.
Q:What's your delivery time for production?
A:If we have stock , can delivery in 1-7 days ; if without the stock, need 5-30 days, depend on quantity.

 

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A: We have our own factories , lovely employees and professional production and processing and sales teams. Quality can be guaranteed. We have rich experience in metallurgical steelmaking field.

Q: Is the price negotiable?

A: Yes, please feel free to contact us anytime if you have any question . And for clients who wants to enlarge market, we will do our best to support.

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