CAS No. : 12008-29-6

EINECS No.: 234-535-8

Appearance: dark grey

Molecular Formula: SiB6

Molecular Weight: 92.952

About Silicon Boride SiB6 Powder

Boron silicon (Silicon Hexaboride) is a shiny black-gray powder with a relative density of 3.0g/cm3 and a melting point of 2200°C. Silicon boride is a lightweight ceramic compound formed between silicon and boron. It is insoluble in water, resistant to oxidation, thermal shock, and chemical attack, especially with high strength and stability under thermal shock. The grinding efficiency is higher than that of boron carbide.

The SiB6 crystal structure includes interconnected icosahedrons (polyhedrons with 20 faces), icosahedral hexahedrons (polyhedrons with 26 faces), and isolated silicon and boron atoms. Compared to hexaboride, it is metastable. However, since crystal nucleation and growth are relatively easy, they can be prepared.

When heated in air or oxygen, the surface of SiB6 is oxidized, and it is attacked by boiling sulfuric acid and fluorine, chlorine and bromine at high temperatures. Silicon boride is conductive. The hexaboride has a low thermal expansion coefficient and a large nuclear cross-section for thermal neutrons. Feel free to send an inquiry to get the latest price if you would like to buy Silicon Boride SiB6 Powder in bulk.

Feature of Silicon Boride SiB6 Powder

1. Nano-silicon boride has high purity, small particle size distribution, high specific surface area.

2. The melting point up to 2230 °C. It can not be soluble in water and anti–oxidation and high resistance to chemical attack. especially in the high thermal impact and stability;

3. Grinding efficiency of silicon boride is higher than that of boron carbide, it can be used as abrasives, grinding and engineering ceramics such as nozzles, gas turbine blades and other different sintering conditions and sealing line

How is Silicon Boride SiB6 Powder produced?

A kind of step of preparing silicon boride powder is as follows:

Silicon powder with an average particle size of less than 1 micron and boron powder with an average particle size of fewer than 20 microns are mixed uniformly by a ceramic ball milling tank; the weight ratio of silicon powder and boron powder is 2.85-2.95:7.

After loading the crucible, put it into the gas protection furnace, pass in argon gas, and heat up to 1400-160 (TC, hold for 50-70 minutes;

At the beginning of heat preservation, put ASiCl4 into the furnace, 3-5ml per minute, dripping time 9-11 minutes;

After cooling, the final SiB6 powder product is obtained by crushing with a ceramic pot ball mill.

Application of Silicon Boride SiB6 Powder

Main uses of silicon boride SiB6 Powder:

1. Used as various standard abrasives and grinding cemented carbides;

2. Used as engineering ceramic materials, as various standard abrasives, and grinding cemented carbide.

3. It is also used as engineering ceramic materials, sandblasting nozzles, and manufacturing blades of gas engines and other special-shaped sintered parts and seals.

4. Used as an anti-oxidant for refractory materials.

Storage Condition of Silicon Boride SiB6 Powder

The damp reunion will affect SiB6 powder dispersion performance and using effects, therefore, silicon boride SiB6 powder should be sealed in vacuum packing and stored in cool and dry room, the silicon boride SiB6 powder can not be exposure to air. In addition, the SiB6 powder should be avoided under stress.

Company Profile

Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and nanomaterials, including boride powder, nitride powder, graphite powder, sulfide powder, 3D printing powder, etc.

The company has a professional technical department and Quality Supervision Department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.
If you are looking for high-quality Silicon Boride SiB6 Powder, please feel free to contact us or click on the needed products to send an inquiry. 

Packing&Shipment of Silicon Boride SiB6 Powder

We have many different kinds of packing which depend on the Silicon Boride SiB6 Powder quantity.

Silicon Boride SiB6 Powder packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.

Silicon Boride SiB6 Powder shipping: could be shipped out by sea, by air, by express as soon as possible once payment receipt.

Payment Methods of Silicon Boride SiB6 Powder

L/C, T/T, Western Union, Paypal, Credit Card etc.

FAQ

Q1

Is silicon hexaboride stable?

Answer: Silicon hexaboride has good thermal stability and corrosion resistance and is characterized by high hardness and melting point. It is harder than steel and can be used as a material for cutting tools. Its melting point is about 2230 degrees Celsius so that it can be used in high-temperature environments.

Q2

What are the main uses of silicon hexaboride?

Answer: Manufacture of high-temperature ceramics or machining tools; preparation of wear-resistant materials such as cutting tools, bearings, and coatings; used in the preparation of some electronic devices;

Q3

What are the methods of preparing silicon hexaboride?

Answer: Direct reaction method: pure silicon and pure boron are directly reacted at high temperatures to produce silicon hexaboride.

Chemical Vapour Deposition Method: By mixing the gases of silicon and silicon diboride at high temperatures to react to produce a silicon hexaboride film.

Q4

Is silicon hexaboride toxic?

Answer: In general, it is relatively stable and non-toxic. However, since silicon hexaboride may produce toxic gases during its preparation, appropriate safety precautions should be taken during operation, such as wearing protective glasses and gloves and ensuring good ventilation. Also, please avoid direct contact with its powder form to prevent accidental inhalation or bodily invasion.

Q5

Differences between silicon boride and glass?

Answer: Silicon boride is a ceramic material, while glass is an amorphous material. Also, silicon boride crystallizes in a different way to glass, and the crystal structure of silicon boride can be seen as a semi-metallic compound. In contrast, glass does not have a crystal structure.