Product Name: Niobium Carbide (NbC)

Specification: 0.8-10um (D50)

Shape: irregular

Color: Black gray

Features: Excellent high temperature strength, ‌ hardness, ‌ elastic modulus and corrosion resistance

Applications: aerospace, ‌ automobile manufacturing, ‌ electronic industry and other fields

Niobium carbide

chemical formula: NbC

Molecular weight: 104.923

Relative density: 8.47

Lattice constant: a=0.447nm

Melting point: 3500 ℃

Density: 7.6g/cm ³ (25 ℃)

Microhardness:> 23.5 Gpa (>2400 kg/mm2), harder than corundum

Elastic modulus: 338000 N/mm2

Thermal expansion coefficient: 6.65 × 10 ^ (-6)/K

Thermal conductivity: 14 w/(m · K)

Generate heat:- 140.7 kJ/mol

Specific heat capacity: 36.8 J/(mol · K)

Electrical resistivity: 35 μ Ω· cm

Physical and chemical properties: Niobium carbide is a green cubic crystal with metallic luster, belonging to the sodium chloride type cubic crystal system. Insoluble in hot and cold hydrochloric acid, sulfuric acid, nitric acid, soluble in a mixed solution of hot hydrofluoric acid and nitric acid.

Synthesis method:

1: Niobium pentoxide reduction method: Using niobium pentoxide and carbon black as raw materials, niobium carbide is prepared through a reduction reaction at high temperature.

2: Direct method: Using niobium metal and carbon black as raw materials, heating them to high temperatures in vacuum or hydrogen gas to directly carbonize them.

3: Gas phase reaction method: Using a mixture of niobium pentachloride vapor, hydrogen gas, and methane as raw materials, niobium carbide is prepared by gas phase reaction at high temperature.

1. Hard alloy and cutting tools

Application: As an additive for hard alloys (such as WC Co based), combined with tungsten carbide (WC), titanium carbide (TiC), etc., it is used to manufacture cutting tools such as turning tools, milling cutters, and drill bits. Advantages: Enhance the high-temperature red hardness of the alloy and extend the service life of the tool in high-speed cutting. Inhibit grain growth, enhance material toughness and anti chipping performance.

2. Wear resistant coatings and surface engineering

Application: By using PVD (Physical Vapor Deposition) or CVD (Chemical Vapor Deposition) technology, a niobium carbide coating is formed on the surface of cutting tools, molds, or mechanical components.

Advantages: The surface hardness can reach 2000-2500 HV, significantly improving wear resistance and adhesive wear resistance.

Resistant to high temperature oxidation (up to 1000 ° C or above), suitable for aircraft engine components or hot rolling rolls.

3. High temperature structural materials

Application: Used for manufacturing components that require extreme temperature tolerance, such as gas turbine blades, rocket nozzles, and high-temperature furnace liners. Advantages: Melting point up to 3480 ° C, excellent thermal stability, and can work for a long time above 1600 ° C.

Strong thermal shock resistance and adaptability to rapidly changing temperature environments.

4. Nuclear industry materials

Application: As a neutron absorbing material or structural component in nuclear reactors. Advantages: Low neutron absorption cross section, reducing neutron loss in nuclear reactions. Resistant to radiation damage and extending the service life of reactor components.

5. Composite material reinforcement phase

Application: Adding nanoparticles or fibers into metal (such as titanium alloy, aluminum alloy) or ceramic matrix to enhance the performance of composite materials.

Advantages: Improve the strength, hardness, and creep resistance of materials, suitable for lightweight components in aerospace.

Improve the dimensional stability of materials at high temperatures.

6. Electrodes and Electronic Materials

Application: Used as a conductive coating in high-temperature electrodes, electrical contacts, or semiconductor devices.

Advantages: Excellent conductivity, strong oxidation resistance, suitable for high-frequency electronic components. High stability in strong electric fields or high temperature environments, extending device lifespan.

7. Catalysts and catalytic carriers

Application: Used in the chemical industry for catalyzing hydrogenation and dehydrogenation reactions, or as a carrier for fuel cell catalysts. Advantages: High specific surface area and surface activity, improving reaction efficiency. Resistant to acid and alkali corrosion, suitable for complex chemical environments.

8. Refractory materials

Application: Used for high-temperature furnaces, ladle liners, or aluminum electrolysis tanks. Advantages: Resistance to molten metal erosion, extending the service life of refractory materials. Low thermal expansion coefficient, reducing structural stress at high temperatures.

9. 3D printing materials

Application: As a reinforcing phase for metal 3D printing (such as SLM technology), it enhances the wear resistance and strength of printed parts. Advantage: When combined with metal powder, it can manufacture high-performance components with complex shapes. Reduce cracks and defects during the printing process.

10. Anti corrosion coating

Application: Coating on the surface of chemical equipment, marine engineering structures, or oil and gas pipelines.

Advantages: Resistant to corrosive media such as Cl ⁻ and H ₂ S, protecting the substrate from chemical corrosion. Maintain coating integrity in high temperature and high pressure environments.

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.