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Si3N4 ceramic substrate/plate

Si3N4 ceramic substrate/plate

 

The main performance parameters

Product Name

Silicon Nitride ceramic substrate, Si3N4 ceramic plate, Si3N4 ceramic sheet, 

Production method

Hot-pressure sintered
(or Gas-pressure sintered)

Colour

Gray and Gray-black

Density

3.2~3.25 g/cm3

Hardness

HRA 92~94

Highest operating Temperature

1400 ℃

Thermal conductivity

23-25 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/℃

Advantages of Si3N4 ceramic

High mechanical strength at high temperatures, Excellent performance in abrasion resistance, acid resistance and alkali corrosion

Other options

Alumina ceramicZirconia(YSZ) ceramic, Aluminum Nitride(AlN) ceramic

 

Standard specifications
Product Name Purity / Method Size Thickness Polishing  
Si3N4 Ceramic substrate Hot-pressure sintered
 
Gas-pressure sintered
114.3 x 114.3mm
101.6 x 101.6mm
100 x 100mm
76.2 x 76.2mm
50 x 50mm
10 x 10mm
φ50.8mm
φ100mm
Or others
0.1mm
0.25mm
0.385mm
0.5mm
0.635mm
1.0mm
2.0mm
Or others
Un-polished surface
Single side polished
Double side polished
 
Unpolished: Ra 0.2~0.75um
Polished:    Ra 0.02~0.05um
Best Polished: Ra  <10 nm
Inquiry Online

 

The strength of Silicon nitride(Si3N4) ceramic substrate is very high, especially hot pressed Silicon nitride, which is one of the hardest substances in the world. It is extremely resistant to high temperatures, its strength can be maintained to a high temperature of 1200 °C without falling, it will not melt into a melt after heating, it will decompose until 1900 °C, and Si3N4 ceramic substrate has amazing chemical resistance and can withstand almost all inorganic acids  and less than 30% caustic soda solution. It can also withstand the corrosion of many organic acids; it is also a high-performance electrical insulation material. Silicon nitride ceramics can be used as gas turbine combustion chambers, mechanical seal rings, the pipes and valves for electromagnetic pumps that transport aluminum liquid, permanent molds, and steel water separation rings.

 

 
Send Inquiry Online

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