1.Silicon carbide-coated graphite product overview:

SIC-coated graphite has the characteristics of high temperature resistant,anti-oxidation,high purity,corrosion resistance and stable physical and chemical property.The use of performance is far superior to the high-purity graphite,high purity graphite starts to appear the oxidation phenomenon at 400℃.It will drop the powder because of oxidation in its long-term us,the powder will be attached on the workpiece and countertop or pollute the use environment.So SIC-coated graphite as a new consumable will gradually replace the high-density graphite in MOCVD equipment and powder sintering.

Our company produces the SIC-coated graphite base product under the high-temperature environmental condition,through combining the silicon vapor with carbon,thus the specific shaped graphite base is wrapped,and SIC protective layer is formed.The formed SIC firmly adheres on the graphite base;it gives the special properties to graphite base.So that the surface of the graphite base is dense,it doesn't have holes,and has the properties of high temperature resistance,corrosion resistance and anti-oxidation.

2.The main characteristics of the silicon carbide graphite product:

Anti-oxidation under high temperature:the oxidation resistance is still very good when the temperature is up to 1600℃.

High purity:obtained by CVD method under the high temperature condition.

Resistant to scour:high hardness,dense surface and fine grain.

Anti-oxidation:resistant to acid,alkali,salt and organic reagent.

3.The main parameters of the silicon carbide-coated graphite product:

SIC surface layer is the β-silicon carbide,belongs to the face-centered cube.

The lattice constant(α)is 0.434nm.

Having the characteristics of high purity and anisotropy.

SIC-coated has a higher thermal condectivity:80W/m.k.

The density is 3.15-3.20g/cm3.

CTE is 4.8*10-6℃-1.

4.Silicon carbide-coated graphite product's application:

Graphite base-coated for GaN epitaxial growth in MOCVD equipment.

Graphite base-coated for monocrystalline silicon epitaxial growth(flat base,round base and stereoscopic base).

Graphite chassis-coated for monocrystalline silicon devices in sintering furnace.Surface-coated on the graphite heater(plate heater,circular heater,cartridge heater,etc.).

Graphite sagger-coated for various oxides sintering in tunnel kiln.

Graphite base-coated for the powder metallurgy continuous sintering.

SIC-coated for space reflector grinded through optical technology.

The first wall material of nuclear reactor.

Graphite base-coated for glass and technology package(solving the problem of the dropping graphite powder).

Graphite accessory-coated for anti-oxidation and corrosion-resistant in high remperature furnace.

Graphite pipeline-coated for corrosive liquid in chemical industry.