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Boride Powder

Calcium Hexaboride CaB6 Powder CAS 12007-99-7

Item No.: Tr-CaB6
Calcium hexaboride (sometimes calcium boride) is a compound of calcium and boron with the chemical formula CaB6. It is an important material due to its high electrical conductivity, hardness, chemical stability, and melting point.
Purity: 99.5%
INQUIRY
Description
Calcium Hexaboride Properties

About Calcium Hexaboride CaB6 Powder:

Calcium hexaboride or calcium boride is a compound of calcium and boron. Calcium boride chemical formula is CaB6. Due to its high conductivity, hardness, chemical stability, and melting point, it is an important material. Calcium boride powder is a black, shiny, chemically inert powder with low density. It has a typical cubic structure of six metal borides, with octahedral units of six boron and calcium atoms.

CaB6 has been investigated due to various peculiar physical properties, such as superconductivity, valence fluctuation, and Kondo effects. However, the most remarkable property of CaB6 is its ferromagnetism. It occurs at unexpectedly high temperatures (600K) and with a low magnetic moment. This high-temperature ferromagnetism originates from the ferromagnetic phase of the dilute electron gas, linkage to the presumed excitonic state in calcium boride, or external impurities on the sample's surface. The impurities might include iron and nickel, probably coming from impurities in the boron used to prepare the sample. 

CaB6 calcium boride is insoluble in H2O, MeOH (methanol), and EtOH (ethanol) and dissolves slowly in acids. Its microhardness is 27 GPa, Knoop hardness is 2600 kg/mm2, the Young modulus is 379 GPa, and electrical resistivity is greater than 2·1010 Ω·m for pure crystals. CaB6 is a semiconductor with an energy gap estimated at 1.0 eV. The low, semi-metallic conductivity of many CaB6 samples can be explained by unintentional doping due to impurities and possible non-stoichiometry.

 

Feel free to inquire about the latest Calcium boride price if you would like to Buy Calcium Hexaboride CaB6 Powder in bulk.

 


Calcium Hexaboride CaB6 Powder CAS 12007-99-7

 

Product Performance of Calcium Hexaboride CaB6 Powder:

Calcium boride has the characteristics of high melting point and high hardness. Its physical and chemical properties are quite stable. When calcined in air, sub-micron CaB6 will only gain weight after 800 degrees Celsius and is not easy to oxidize. CaB6 is generally insoluble in hydrochloric acid and sulfuric acid, so technically, to remove impurity materials with hot hydrochloric acid, but CaB6 is soluble in nitric acid.

 

How is Calcium Hexaboride CaB6 Powder produced?

One of the main reactions of industrial production is:

CaO + 3 B2O3 + 10 Mg→CaB6 + 10 MgO

Other methods of producing CaB6 powder include:

 

Calcium or calcium oxide reacts directly with boron at 1000°C;

Ca + 6B→CaB6

Ca(OH)2 reacts with boron under a vacuum of about 1700°C (carbothermal reduction);

Ca(OH)2 + 7B→CaB6 + BO(g)+ H2O(g)

The reaction of calcium carbonate and boron carbide under vacuum above 1400°C (Carbothermal reduction)

CaO and H3BO3 react with Mg to 1100°C.

Low-temperature (500°C) synthesis

CaCl2 + 6NaBH4→CaB6 + 2NaCl + 12H2 + 4Na

As a result, the material quality is relatively poor.

 

To produce, for example, pure CaB6 single crystals used as cathode materials, the CaB6 powder thus obtained is further recrystallized and purified by zone melting technology. The typical growth rate is 30 cm/h, and the crystal size is about 1x10 cm.

Single crystal CaB6 nanowires (diameter 15-40 nm, length 1-10 microns) can be obtained by pyrolyzing diborane (B2H6) on calcium oxide (CaO) powder at 860-900°C in the presence of Ni catalyst.


Technical Parameter of Calcium Hexaboride CaB6 Powder:
Product Name MF Purity Particle Size Bulk Density Melting Point Color
Calcium Hexaboride CaB6 98%/90% -325 mesh/   5-10um 2.33 g/cm3 2230℃ Gray Black
 

Application of Calcium Hexaboride CaB6 Powder:

1. Used as a boron-containing additive for dolomite charcoal and magnesium dolomite charcoal refractories to resist oxidation erosion and improve thermal strength.

2. Used as a deoxidizing and degassing agent for highly conductive red copper to improve conductivity and strength.

3. Used as a new material for preventing neutrons in the nuclear industry.

4. Used as a new type of semiconductor material in spin electronic components with a temperature of 900K.

5. Used as a raw material for manufacturing boron trichloride (BCl3) and amorphous boron.

6. Used as a raw material for manufacturing high-purity metal borides (TiB2, ZrB2, HfB2, etc.) and high-purity boron alloys (Ni-B, Co-B, Cu-B, etc.).

7. Used to manufacture a mixture of catalyst-containing calcium-boron nitride (Ca3B2N4) and hexagonal boron nitride and to produce crystal cubic boron nitride with excellent performance.


Storage Condition of Calcium Hexaboride CaB6 Powder:

Damp reunion will affect CaB6 powder dispersion performance and using effects, therefore, calcium hexaboride CaB6 powder should be sealed in vacuum packing and stored in cool and dry room, the calcium hexaboride can not be exposure to air. In addition, the CaB6 powder should be avoided under stress.

Packing & Shipping of Calcium Hexaboride CaB6 Powder:
We have many different kinds of packing which depends on the calcium hexaboride CaB6 powder quantity.
Calcium hexaboride CaB6 powder packing: vacuum packing, 1kg/bag, 25kg/barrel, or as your request.
Calcium hexaboride CaB6 powder shipping: could be shipped out by sea , by air, by express as soon as possible once payment receipt.
Packing & Shipping of Calcium Hexaboride CaB6 Powder

Luoyang 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.
If you are looking for pure calcium boride powder, please feel free to contact us and send an inquiry. 


FAQs of calcium hexaboride:
Q:What is calcium hexaboride used for?
A:Calcium hexaboride is used in the production of fluorinated steels and as a reducing agent in the production of oxygen-free copper. Due to the low solubility of copper in copper, the latter has a higher electrical conductivity than conventional phosphorus-reduced copper.
 
Q:What is the structure of the CaB6 crystal?
A: Often referred to as the CaB 6 prototype structure, the lattice consists of a metal atom centred by eight corners. The particles of these materials are also readily available in cubic form.

Q:What are the specific applications of calcium hexaboride powder in the electronics industry?
A:In the electronics industry, calcium hexaboride powder has specific applications, especially in scenarios requiring good electrical conductivity and thermal stability. It is commonly used to make cathode materials for electron microscopes and other vacuum tube devices due to CaB6's low work function (i.e., lower electron escape work), which allows it to emit electrons efficiently at relatively low temperatures. This property is crucial for enhancing the efficiency and performance of electronic devices. Moreover, the stability of CaB6 makes it an ideal choice for high-temperature operating environments, such as certain types of semiconductor devices and sensors.

Q:What are the safety handling and storage requirements for calcium hexaboride powder?
A:Strict safety guidelines must be followed when handling and storing calcium hexaboride powder to ensure personnel safety and product quality. CaB6 powder should be stored in a dry, cool place, away from ignition sources and incompatible materials, such as oxidizers. To prevent inhalation of dust or skin contact, all operations involving this material should be conducted in well-ventilated areas, and workers should wear appropriate personal protective equipment, including but not limited to dust masks, gloves, and goggles. Furthermore, given that CaB6 may be harmful to aquatic environments, any waste disposal must comply with local environmental regulations to avoid environmental pollution.





 

Calcium Hexaboride Properties

Other Names zirconium boride, ZrB2 powder
CAS No. 12007-99-7
Compound Formula CaB6
Molecular Weight 104.944
Appearance Black Powder
Melting Point 2235 °C
Boiling Point N/A
Density 2.3-2.45 g/cm3
Solubility in H2O Insoluble
Exact Mass N/A
   
   

Calcium Hexaboride Health & Safety Information

Signal Word Warning
Hazard Statements H315-H319-H335
Hazard Codes Xi
Risk Codes N/A
Safety Statements N/A
Transport Information NONH for all modes of transport
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