Spherical Niobium Powder Description
Niobium has a small neutron capture section, high thermal conductivity, and high strength, and is used as a nuclear fuel cladding material, nuclear fuel alloy additive, and heat exchanger structural material in atomic energy reactors. Metallurgical grade niobium powder is mainly used as alloy additives and production of welding electrodes, refractory materials, etc.
SAM spherical niobium powder possesses high purity, low oxygen content, high sphericity, smooth surface, no satellite particles, and narrow particle size distribution. Its melting point is high, excellent high-temperature strength and special strength, and it is non-radioactive and can be employed as an ideal thermal protection and structure material of an aerospace engine. Spherical niobium powder can be applied in such processes as laser/electron beam additive manufacturing, hot isostatic pressing, laser cladding, and thermal/cold spraying.
* Available powder particle sizes: 1 µm, 10 µm, 45 µm, or customized.
Spherical Niobium Powder Typical Components
|
Element
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Mn
|
O
|
N
|
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Wt.%
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99.9
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≤600 ppm
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＜500 ppm
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Spherical Niobium Powder Properties
1. Physical Properties
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Particle Size
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0-25 μm, 15-53 μm, 45-150 μm, or customized
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|
Purity
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≥99.9%, or customized
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|
Apparent Density (g/cm3)
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≥4.5
|
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Tap Density (g/cm3)
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>5.5
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|
Hall Flow Rate (s/50g)
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≤15
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Oxygen Content
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≤600 ppm
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|
N Content
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＜500 ppm
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*Custom oxygen content with lower levels is available. Please feel free to contact us.
2. Chemical Properties
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Property
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Value/Description
|
|
Oxidation
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Stable at room temperature; forms a dense oxide layer (Nb₂O₅) on the surface; reacts with oxygen, nitrogen, and carbon at high temperatures
|
|
Corrosion Resistance
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Resistant to acids (especially HCl, HNO₃, H₂SO₄), but dissolves in HF or hot concentrated alkalis
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Common Compounds
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Oxides (Nb₂O₅), nitrides (NbN), carbides (NbC)
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3. Mechanical Properties
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Property
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Value/Description
|
|
Hardness
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80-100 HV
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Elastic Modulus
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105 GPa
|
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Tensile Strength
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275-345 MPa
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Ductility
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Good
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4. Electrical & Magnetic Properties
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Property
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Value/Description
|
|
Electrical Resistivity
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152 nΩ·m
|
|
Superconducting Critical Temperature (Tc)
|
9.25 K
|
|
Magnetic Susceptibility
|
Weakly paramagnetic (χ ≈ 2.6 × 10⁻⁶)
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Spherical Niobium Powder Application
The multifunctionality of spherical niobium Powder makes it inevitable across high-performance industries. It plays an important role in major aerospace superalloys as a factor in their high-temperature and corrosion resistance. The spherical form also enhances packing density and flowability in additive manufacturing processes such as 3D printing and laser cladding.
Also, Niobium Powder is employed in the field of electronics for manufacturing components like capacitors, utilising to their advantage of its greater electrical conductivity and high melting point. Also employed in optics equipment, nuclear reactors, biomedicine equipment, and the chemicals industry, Niobium Powder works as a catalyst.
Spherical Niobium Powder Packaging
Our Spherical Niobium Metal Powder is clearly tagged and labeled externally to ensure efficient identification and quality control. Great care is taken to avoid any damage which might be caused during storage or transportation.
