Tungsten Nanopowder (W, 99.95%, 70 nm)

Technical Specifications

1. Product Name: Tungsten Nanopowder
   • Chemical Formula: W
   • CAS Number: 7440-33-7
2. Purity
   • Grade: 99.95% (ultra-high purity)
   • Impurities: ≤0.05% (trace levels of oxides, metals, or other non-metallic elements)
3. Particle Size
   • Range: ~70 nm
   • Particle Size Distribution: Verified using SEM (Scanning Electron Microscopy) or TEM (Transmission Electron Microscopy)
4. Morphology
   • Shape: Near-spherical or irregular particles, depending on synthesis
   • Surface Area: High due to nanoscale dimensions, though slightly lower than smaller nanoparticles (<50 nm)
5. Crystal Structure
   • Phase: Body-Centered Cubic (bcc)
   • Stability: Retains structural integrity under extreme temperatures and conditions
6. Physical and Chemical Properties
   • Color: Gray metallic powder
   • Density: ~19.25 g/cm³ (bulk density is lower due to particle agglomeration)
   • Melting Point: ~3,422 °C
   • Boiling Point: ~5,555 °C
   • Thermal Conductivity: ~173 W/m·K
   • Electrical Conductivity: Excellent with high resistance to corrosion
7. Packaging and Storage
   • Standard Packaging: Sealed in airtight containers under inert gas (e.g., argon) or vacuum-sealed to prevent oxidation
   • Storage Conditions: Store in a cool, dry place; protect from air, moisture, and contaminants
   • Shelf Life: Stable under proper storage conditions; surface oxidation may occur with prolonged exposure to air
8. Safety and Handling
   • Hazards:
     • Tungsten nanopowder is flammable and may ignite at high temperatures in air.
     • Inhalation of fine tungsten particles may irritate the respiratory system.
   • Recommended Protective Measures:
     • Use PPE (e.g., gloves, goggles, respirators).
     • Handle in an inert or controlled atmosphere to reduce risks of oxidation or combustion.

Applications

1. Aerospace and Defense
   • High-Strength Alloys: Tungsten nanopowder is used in superalloys for aerospace and defense, providing exceptional strength and high-temperature resistance.
   • Radiation Shielding: Ideal for manufacturing radiation shields due to its high density and stability under radiation exposure.
2. Energy Applications
   • Nuclear Reactors: Utilized in components for nuclear reactors because of its high melting point and thermal stability.
   • Hydrogen Storage: Investigated for hydrogen storage applications due to its ability to form hydrides.
3. Catalysis
   • Industrial Catalysts: Used in catalytic processes like hydrogenation, dehydrogenation, and isomerization reactions.
   • Environmental Applications: Effective in water treatment and pollutant degradation systems.
4. Coatings and Surface Engineering
   • Thermal Coatings: Provides heat resistance and durability in high-temperature environments, such as turbine blades and engines.
   • Wear-Resistant Coatings: Enhances the lifespan of tools and industrial machinery.
5. Electronics
   • Conductive Materials: Tungsten nanoparticles are used in conductive inks, coatings, and microelectronic components.
   • Electrodes: Widely used for electrodes in various electronic and electrochemical devices.
6. Additive Manufacturing and 3D Printing
   • Metal Powders: Compatible with 3D printing technologies for creating high-performance metal components used in aerospace, automotive, and industrial sectors.
7. Biomedical Applications
   • Imaging and Radiology: Tungsten’s high density makes it an excellent material for X-ray shielding and imaging applications.
   • Biomedical Devices: Investigated for use in implants and other medical devices.
8. Nanocomposites
   • Enhanced Materials: Tungsten nanoparticles improve the mechanical, thermal, and electrical properties of composite materials.
   • Aerospace Components: Used in lightweight composites for high-stress applications.
9. Research and Development
   • Material Science: Extensively studied for its unique properties at the nanoscale in energy and material science fields.
   • Prototyping: Applied in developing next-generation technologies and advanced manufacturing processes.

Key Features

• High purity (99.95%) and nanoscale size (~70 nm) make it ideal for high-performance applications in aerospace, energy, and coatings.
• Exceptional thermal and electrical conductivity combined with resistance to wear and corrosion.
• Versatile use in catalysis, 3D printing, radiation shielding, and advanced manufacturing.