Overview of High purity ultrafine niobium powder
Niobium, often found in conjunction with tantalum minerals, is primarily extracted as a byproduct of tin and tantalum mining. Its chief ores include pyrochlore and columbite. Once refined, niobium becomes highly versatile, finding application in alloys, superconductors, and various high-tech materials.
Feature of High purity ultrafine niobium powder
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Superior Strength and Lightness: When added to steel in small quantities (typically less than 1%), niobium significantly enhances the strength and toughness of the alloy while reducing its weight, making it ideal for aerospace and automotive applications.
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Corrosion Resistance: Like tantalum, niobium forms a passive oxide layer that protects it from corrosion, making niobium-based alloys suitable for use in harsh environments.
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Superconductivity: Niobium exhibits excellent superconducting properties when cooled below its critical temperature of about 9.2 K (-264°C or -443°F). This property makes it the primary material for superconducting magnets used in MRI scanners and particle accelerators.
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Magnetic Properties: Niobium is paramagnetic at room temperature but becomes strongly diamagnetic when cooled, meaning it repels magnetic fields. This characteristic is exploited in certain specialized applications.
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Ease of Fabrication: Despite its strength, niobium is easily formed, welded, and machined, facilitating its use in complex engineering designs.
(High purity ultrafine niobium powder)
Parameters of High purity ultrafine niobium powder
The high purity ultrafine niobium powder parameter typically refers to the purity of the niobium, which is defined as the ratio of the niobium atoms in the powder sample to the total number of niobium atoms in the sample.
There are several parameters that can be used to determine the purity of high purity ultrafine niobium powder:
1. Atomic weight: The atomic weight of niobium is a common parameter for determining the purity of niobium powder. The atomic weight of niobium is approximately 92.057 u.
2. Particle size: The particle size of the niobium powder affects its porosity and particle-to-volume ratio. A smaller particle size results in a higher particle-to-volume ratio, which means more particles are packed together and may lead to lower particle purity. On the other hand, larger particle sizes result in a lower particle-to-volume ratio, which means fewer particles are packed together but may result in higher particle purity.
3. Surface area: The surface area of the niobium powder affects its mechanical properties and reduce its chemical stability. A larger surface area leads to better mechanical properties and longer degradation time of the powder.
4. Chemical composition: The chemical composition of the niobium powder also plays an important role in determining its purity. Different grades of niobium powders have different compositions and purity levels.
In summary, the high purity ultrafine niobium powder parameter depends on the atomic weight, particle size, surface area, and chemical composition of the powder sample. To determine the purity of the powder, it is necessary to carefully analyze and compare these parameters with industry standards and guidelines.
(High purity ultrafine niobium powder)
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(High purity ultrafine niobium powder)
