Niobium Bar

Niobium bar is a metal material with high purity, high strength, and high corrosion resistance. Its chemical composition is pure Nb, its chemical symbol is Nb, its atomic number is 41, and its atomic weight is 92.91. Niobium (Nb) has the characteristics of good corrosion resistance, high strength, high heat resistance, superconductivity, and wear resistance, and is a very important metal material. It is a superconductor that can be used to make superconductors and other high-performance electronic components. Niobium rod is usually extracted using arc melting or plasma melting. It can form an oxide layer with good stability in the air or oxidizing environment, so it is widely used in aerospace, chemical, electronic, semiconductor, and nuclear industries and other fields. Niobium rod has good machinability and can be easily processed into shapes such as wires, cables, capacitors, high-temperature devices, and special alloys.

• Density: 8.57g/cm³
• Melting point: 2468°C
• Electrical conductivity: 38.3 MS/m
• Thermal conductivity: 54.0 W/(m· K)
• Thermal expansion coefficient: 7.3×10^-6 K^-1 (20-1000°C)

The process of producing niobium bar is roughly divided into the following steps:

1) Raw material preparation: Since niobium is a metal element, it is necessary to prepare niobium powder, niobium rod, Niobium Sheet, and other raw materials as the starting point for producing niobium alloy bar.

2) Manufacturing powder: If you use niobium powder as a raw material, you need to manufacture the powder. In the process of manufacturing powder, methods such as high pressure or chemical reduction are required to purify niobium powder.

3) Melting to prepare niobium rod: Melt niobium raw material in a vacuum or inert atmosphere, and remove inclusions and impurities by controlling temperature and atmosphere changes.

4) Forging first and then drawing: the molten niobium raw material is first forged into a bar with a hammer or machine, and then the bar is stretched in sequence and the temperature is adjusted to make the bar into a niobium alloy bar.

5) Testing: Detect the physical and chemical properties of the niobium alloy bar through physical and chemical tests to ensure that the quality of the niobium rod meets the standard requirements.

6) Cutting, grinding, and packaging: Niobium bar is cut to the appropriate length according to customer requirements, polished for surface optimization, and finally packaged and sold.

The above are the basic steps of the production process of niobium rod. There may be other processes and details in actual production.

The working principle of the niobium alloy bar mainly depends on its material properties, mainly manifested in its high superconductivity and superconducting stability.

In applications such as superconducting magnets, niobium rods are often used as superconducting wires. When energized, superconducting currents will be generated inside the superconducting wires, and these currents will move without resistance inside the niobium round bar, resulting in the stabilization of its internal magnetic field. This resistance-free motion can continue in the absence of external disturbances, allowing efficient power transmission and storage.

In addition, the niobium round bar also has superconducting stability, that is, under the action of external disturbance or strong magnetic field, its superconducting current can still flow continuously without superconducting state destruction. This characteristic is very important in magnet applications to ensure the stability and reliability of magnet operation.

Niobium bar is widely used in electronics, chemical industry, aerospace, pharmaceutical, and other fields, especially in high-tech and precision manufacturing fields, such as SEM transmission electron source, magnetic resonance, magnetic materials, capacitive and inductive components, etc. applications.

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