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    • Tungsten Disulfide Nanopowder

    Tungsten Disulfide Nanopowder

    Tungsten disulfide (WS2) nanopowder is a cutting-edge solid lubricant material with great tribological characteristics. This tungsten disulfide compound has a crystal structure that is different from graphene. The tungsten atoms are arranged in a trigonal prismatic pattern. Tungsten disulfide nanoparticles work better in harsh situations, including high temperatures and corrosive environments. This makes it perfect for use in aerospace, automotive, and industrial settings.

    Tungsten Disulfide Nanopowder: Technical Specifications

    CAS Number xxxxx
    Molecular Formula WS2
    Molecular Weight 247.98 g/mol
    Purity ≥99.8%
    Average Particle Size (D50) 40-80 nm
    Specific Surface Area 85 m²/g
    Bulk Density 0.25 g/cm³
    True Density 7.5 g/cm³
    Color Blue-gray to black powder
    Crystal Phase Hexagonal layered structure
    Melting Point 2800°C
    Form Nanopowder

    Properties Of Tungsten Disulfide Nanopowder

    Tungsten disulfide nanoparticles have amazing physical and chemical properties:

    • Ultra-Low Friction: The dynamic coefficient is 0.030 and the static coefficient is 0.070, which is better than molybdenum disulfide.
    • Exceptional Temperature Range: Works well in a wide range of temperatures, from -460°F to 1200°F in air and up to 2400°F in a vacuum.
    • High Load Capacity: Can handle compressive loads of up to 300,000 psi without breaking.
    • Chemical Stability: Not reactive, not harmful, and not affected by most oils, solvents, and refined fuels
    • Oxidation Resistance: Better resistance than regular lubricants.
    • Layered Structure: The layers are held together by van der Waals forces, which make it easy to shear and provide great lubrication.

    H2: Uses of Tungsten Disulfide (WS2) Powder

    Tungsten sulfide powder has several uses in industry:

    • Lubricant Additive: To improve extreme pressure qualities and cut friction.
    • Dry Coating Application: To make lubricating films without binders.
    • Catalytic Applications: For hydrodesulfurization and hydrodenitrification in the refining of petroleum
    • Composite Material: To create self-lubricating materials.
    • Surface Treatment: Used for instant molecular bonding

    Applications of Tungsten Disulfide (WS2) Powder

    Tungsten disulfide nanopowder improves performance in several fields, like:

    • Aerospace & Defense: Aircraft engine components, bearings, and fasteners
    • Automotive & Racing: Engine pistons, rings, camshafts, and valve stems
    • Industrial Manufacturing: Injection mold tooling for improved resin flow.
    • Electronics & Semiconductors: Transistor materials for enhanced data processing

    Why Choose MKNano for Tungsten Disulfide Nanopowder?

    MKNano makes high-quality tungsten disulfide nanopowder that is designed to work better:

    • Certified Purity: Minimum 99.8% tungsten sulfide content with comprehensive COA documentation
    • Consistent Particle Size: Precisely controlled 40-80 nm distribution for optimal application results
    • Technical Expertise: Expert guidance on application methods and formulation optimization
    • Fast Turnaround: Quick processing and reliable global shipping
    • Competitive Pricing: Volume discounts available for bulk orders

    Contact MKNano today for technical specifications, custom formulations, and volume pricing.

    Frequently Asked Questions About Tungsten Disulfide Nanopowder

    Q: Is Tungsten Disulfide (WS2) electrically conductive?

    A: Yes, tungsten disulfide exhibits electrical conductivity, though some resistance may occur in low-voltage (milliamp) applications.

    Q: Will Tungsten Disulfide (WS2) react with grease at higher temperatures?

    A: No, tungsten sulfide is completely compatible with all petroleum-based greases, synthetic oils, and high-temperature lubricants

    Q: What is the corrosion resistance of Tungsten Disulfide (WS2)?

    A: Tungsten disulfide is chemically inert and non-corrosive, but it does not actively inhibit corrosion on substrates.​

    Q: Is Tungsten Disulfide safe?

    A: Yes, tungsten disulfide is completely inert, non-toxic, and contains no PFAS or hazardous substances.

    Q: How is Tungsten Disulfide coating applied?

    A: Tungsten disulfide coating is applied by impinging the powder onto substrates using pressurized air at ambient temperature. 

    Q: How thick is the Tungsten Disulfide coating?

    A: The tungsten disulfide coating thickness is precisely 0.5 microns (0.00002 inches). The material's molecular structure prevents self-adhesion, naturally limiting coating thickness while maintaining dimensional integrity.​

    Q: What is the effect of temperature (thermal stability) on Tungsten Disulfide (WS2)?

    A: Tungsten disulfide maintains stable performance in a normal atmosphere.

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