Product Name: Niobium Disilicide (NbSi2) 
Specification: 0.8-10um (D50) 
Appearance: Irregular 
Color: Black Grey 
Features: Excellent high-temperature strength, corrosion resistance, and oxidation resistance 
Usage: Aerospace, nuclear energy, power equipment, electronics and materials science, and other fields

niobium disilicide

CAS:12034-80-9

EINECS:234-812-3

Molecular formula: NbSi2

Molecular weight: 149.0774

Melting point: 1940 ℃

Microhardness: 10 3GPa(1050kg/mm2)

Vickers hardness: 5 88～6.88GPa (600～700kg/mm2)

Conductivity: 50.4 × 10-4 S/m

Thermal expansion coefficient: 7.3 × 10-6 ℃

Relative density: 5.7

Lattice constant: 0 4863nm，C=0. 6604nm

Property: It is a gray hexagonal crystal. Insoluble in water, concentrated hydrochloric acid, and concentrated sulfuric acid, soluble in a mixed solution of hydrofluoric acid and sulfuric acid.

Preparation method: Using metal niobium and silicon as raw materials, metal niobium and metal silicon are crushed and thoroughly mixed before being placed in a graphite furnace. The furnace is gradually heated and heated until the temperature reaches 1000 ℃ for reaction. Then, hydrogen gas is introduced to raise the temperature to 1400-1900 ℃ before continuing the reaction, resulting in niobium silicide. Niobium pentoxide and metallic silicon can also be placed in a reduction furnace and reduced at 1400 ℃ for more than 30 minutes to produce niobium silicide.

Purpose:

1. In the aerospace field, niobium silicide is widely used in high-temperature structural components and advanced thermal barrier coatings. Due to its excellent high-temperature strength and corrosion resistance, niobium silicide can withstand extreme working conditions such as high temperature and high pressure. The use of niobium silicide in components of jet engines, rocket engines, and spacecraft can provide longer lifespan and more reliable performance.

Niobium silicide can also be used as an advanced thermal barrier coating material to protect aerospace surfaces from high-temperature airflow and oxidative corrosion. Niobium silicide coating has low thermal conductivity and good oxidation resistance, which can effectively reduce surface temperature gradient and improve the heat resistance and lifespan of aerospace vehicles.

2. In the field of energy, niobium silicide is widely used in equipment such as high-temperature burners, gas turbines, and nuclear reactors. Due to its excellent high-temperature stability and corrosion resistance, niobium silicide can withstand harsh environmental conditions such as high temperature, high pressure, and strong acidity and alkalinity. Burners and impeller components made of niobium silicide can provide more efficient and reliable energy conversion efficiency.

Niobium silicide can also be used as a material for nuclear reactors, in the manufacture of nuclear fuel elements and reactor structural materials. Due to its low neutron capture cross section and good radiation resistance, niobium silicide can effectively reduce radioactive damage in nuclear reactors and improve their safety and stability.

3. In the field of electronics, niobium silicide is widely used in semiconductor devices and integrated circuits. Due to its excellent conductivity and stable crystal structure, niobium silicide can be used as a high-temperature superconducting material, magnetic storage material, and thermoelectric material. The high-temperature superconducting properties of niobium silicide make it an ideal material for manufacturing high-performance electronic devices such as superconducting inductors and superconducting quantum interferometers.

4. Niobium silicide can also be used as a magnetic storage material for manufacturing magnetic recording heads, magnetic recording media, and other equipment. Niobium silicide has high saturation magnetic induction intensity and low hysteresis loss, which can achieve higher density data storage and faster data read and write speeds.

5. In the field of materials science, niobium silicide is widely used in high-temperature structural materials, refractory materials, and composite materials. Due to its excellent high-temperature strength, corrosion resistance, and oxidation resistance, niobium silicide can be used for manufacturing high-temperature tools, high-temperature containers, refractory coatings, and other equipment. Niobium silicide can also be combined with other materials to form composite materials, improving the overall performance and functionality of the materials.

Packaging and storage: This product is packaged in an inert gas filled plastic bag, sealed and stored in a dry and cool environment. It should not be exposed to air to prevent moisture from causing oxidation and aggregation, which may affect dispersion performance and usage effectiveness; The packaging quantity can be provided according to customer requirements and divided into smaller packages.