Silicon hexaboride is also known as hexaboron Silicide. It’s a glossy, black-gray powder. SiB6 is its chemical formula. The molecular weight of SiB6 is 92.95. The melting point is 2200. It is roughly the same hardness as ruby or diamond. Silicon hexaboride is capable of conducting electricity. It is insoluble when water is used. It can be oxidized when heated in chlorine or water vapor.
Silicon Boride Powder’s Physicochemical Property
The SiB6 crystal structure includes interconnected icosahedrons, polyhedrons that have 20 faces and icosahedrons that have 26 faces. It also contains isolated silicon and bore atoms.
It is insoluble when it comes into contact with water, and resistant to oxidation and thermal shock. It has high strength, stability, and resistance to thermal shock. It is more efficient than boron caride in grinding.
Surface oxidation is caused by SiB6 being heated in oxygen or air. SiB6 can then be eroded at high temperatures using boiling sulfuric and fluorine, chlorin, and bromine. Borides can be used as electrical conductors. Hexamborides are low in thermal expansion and have high thermal neutron cross sections.
Silicon Boride Powder Properties | |
Other Names | SiB6 Powder, silicon hexaboride |
CAS No. | 12008-29-6 |
Formula compound | SiB6 |
Molecular Weight | 92.95 |
Appearance | From dark grey to black powder |
Melting Point | 1950 |
Boiling Point | N/A |
Density | 2.43g/cm3 |
Solubility of H2O | Insoluble |
Exact Mass | 93.04 |
Methods for Preparation of Silicon Boride Powder
The mixture of boron, silicon and water can be heated directly. Any excess silicon can then be removed with HNO3 and HF. Molten KOH can also be used to decompose B3Si.
Silicon Boride Powder: Applications
1 Used to grind cemented carbide, standard abrasives, and other uses.
2 are used for engineering ceramic material and sandblasting, as well as manufacturing gas engine blades and special-shaped sintering parts.
3. It is used as an oxidant in refractories.
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