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α-SIC is mixed up with carbon, according to different particle sizes. SI is involved in the reaction process, during sintering. So, there is about 10% free Silicon present in the SIC RB, which limits its application. This material cannot be used in hydrofluoric acid, strong alkali and oxidizing medium and its max working temperature is 1200℃.



Reaction Bonded SiC                       TECHANICAL PROPERTY DATA

Content (wt %) 

SIC-12%Si

Density

3.05

Hardness 

Hs110 Hv1,700

Bending Strength 

392

Flexural Strength (Gpa) 

350

Poisson’s Ratio 

0.2

Elastic Modulus 

>350

Fracture Toughness(MN/M) 

2.8

Thermal Conductivity (W/m.K) 

151

Thermal Expansion Coefficient (I/℃) 

3.1×10-6(RT~400℃)

Heat Resistance(in the air) 

1,400℃

Thermal Shock Resistance △TMM 

250℃

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