Black silicon carbide
Black silicon carbide also called black carborundum. This product, chemical formula of
which is SiC, is obtained from the synthesis of high purity quarts
sand and petroleum coke as basic raw materials under high
temperature in an electric resistance furnace. It contains 85-99%
of SiC and the admixtures of Fe2O3, Al2O3, CaO, SiO2, MnO2.
It is characterized by great hardness (9,2 in Mohs scale) and micro
hardness (circa 2940- 3320 kG/mm2). Its specific gravity (density)
of hexagonal type, which is affected by the degree of impurity,
comes to 3,20+/-0,05 g/cm3. Bulk density equals 1,20 – 1,60g/cm3.
Good thermal conductivity, low thermal expansion (decreasing with
temperature growth) and high strength are another characteristics
that ensure a wide use of the material. Electrically it is a
semiconductor. Compared with green silicon carbide, the purity,
hardness and brittleness of black SiC are lower
Physical And Chemical Properties
|C97||F12-F220||98.0 min||0.3 max||0.3 max||0.5 max|
|GC99||F12-F220||99.0 min||0.2 max||0.2 max||0.5 max|
|Hardness( mohs )||9.15|
|Maximum service temperature(℃)||1900|
Black silicon carbide (SiC ) is typically used on hard or brittle
It is also used for:
- kiln furniture
- lapping and polishing
- pressure blasting
- electrical heating elements
- Reusable abrasive
- Grinding, lapping and polishing
- Wear-resistant and refractory
- Grinding wheels
- having sharp knife-edge..
- electrical conductivity, thermal conductivity
- high working efficiency
- Highly friable abrasive media which is reusable but less durable
than brown aluminum oxide
- Cleaning or etching the hardest sub-surfaces
- Used for grinding, lapping, and wire saw cutting as well as
1.25kg PP bag,40 woven bags/jumbo bag/pallet
2.25kg paper bag,40 paper bags/pallet
Q : What is your lead time?
A : It usually needs about 7-14 days after receiving the workable
Q : Do you provide free samples?
A : Of course! Customized samples are needed. The mass production
will be started after we get your confirmation on this sample.
However, shipping costs are paid by you.
Q : What is your payments term?
A : We can accept 30% deposit, 70% balance to be against the BL
copy or by LC, or other payment terms.
Q : Can we visit your factory?
A : Yes, for sure, you are welcome to visit our factory. I do thing
we will impressed you a lot.