Introduction

Silicon carbide thermocouple protection tubes show excellent performance under corrosive and abrasive conditions at elevated temperatures.Tech Ceramic has several grades of SiC materials to meet different environments and conditions.

Grade

Open porous SiC

  • Tecsic-RC: Recrystallized Silicon Carbide (RSiC)
  • Tecsic-N: Nitride Bonded Silicon Carbide (NSiC)

Dense SiC

  • Tecsic-R: Reaction Bonded Silicon Carbide (SiSiC)
  • Tecsic-P: Pressureless Sintered Silicon Carbide (SSiC)

Property

 

Tecsic-RC

RSiC

Recrystallized

Tecsic-N

NBSiC

Nitride Bonded

Tecsic-R

SiSiC

Reaction Sintered

Tecsic-P

SSiC

Pressureless Sintered

Composition 99% SiC 74% SiC+23% Si3N4 90% SiC+10% Si 99% SiC
Bulk Density g/cm3 2.7 2.75 3.1 3.1
Apparent Porosity % 15 11 0.1 0
Modulus of Rupture R.T. MPa 90-100 170-180 240-280 320-370
Modulus of Rupture 1300℃ MPa 100-110 180-190 250-290 330-400
Thermal Expansion 20 – 1000°C, 10-6 K-1 4.6 4.7 4.3 5.0
Thermal Conductivity (1200°C) W/m°K 25 20 32 32
Max Working Temp ℃ 2000 in protective atmosphere 1500 1350 1600

Features

  • Excellent oxidation resistance
  • Fast response due to high thermal conductivity
  • Outstanding thermal shock resistance
  • Excellent corrosion resistance against aggressive media
  • High abrasion and erosion resistance

Application

  • Furnaces and combustion chambers under harsh conditions
  • Desulfurization unit

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