Pressureless Sintered Silicon Carbide
We produce silicon carbide ceramic products in pressureless sintering method, whose feature is to take comprehensive techniques that improve sintering to make sintered blanks of silicon carbide achieve the theoretical density of over 98% (the theoretical density of silicon carbide ceramics is 3.21g/cm3) and the silicon carbide content of over99%. Obtained silicon carbide ceramic sintered bodies have outstanding performance, and its strength that does not decrease in 1600oC so that it is particularly suitable for wear-resistant, corrosion-resistant and high-temperature-resistant conditions, such as gasket rings,

 

pump elements, grinding media, blast nozzles, bulletproof laminates etc. The product is our major product. coefficient of friction (about 0.2), having higher strength than pure graphite material, small density (1.65g/cm3), having self-lubricating properties similar to graphite materials, but better wear resistance than graphite material, suitable for mass production. Suitable for: workpieces with high requirements of resistance to dry friction such as gasket rings in machines with possible dry friction, sliding bearings of magnetic pumps or shield pump, valve opening and closing parts with high requirements of corrosion resistance etc.

 

Graphite-containing Silicon Carbide
Scanning Electron Micrograph - 200µm
Scanning Electron Micrograph - 50µm

 

 

Performance

Unit

Pressureless Sintered 
Silicon Carbide

Adopted Standard

Purity

SiC-Wt% 70 -

Graphite content

Wt% 30 -

Other oxides

Wt% 0 -

Density

g/cm3 2.65 ASTM C 20

Grain size

μm - -

Modulus of elasticity

MPa 246 ASTM C 848

Compression strength

GPa - -

Bending strength

MPa 160 GB/T6569-2006

Fracture toughness

MPa m1/2 - -

Hardness

HK500 1000-1200 GB/T16534-2009

Poisson ratio

  - -

Specific heat capacity

J/kg K - -

Heat conductivity

W/m K 125 ASTM C 408

Coefficient of thermal 
expansion

10-6K-1 (0-1500oC) - -

Weibull modulus

  - -

Maximum service 
temperature

oC 1350 -

Ceramic Materials
Contact Us
  • TEL:0451-84368085
  •      0451-84368082
  •      0451-82296796
  • Fax:0451-84368083
  • Addr:No.18 Donghu Street, Daoli District, Harbin
  • Zip code:150090
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