Overview
Vanadium Boride Nanopowder represents a specialized class of transition metal borides with exceptional mechanical and thermal properties. As a nanoscale material (typically 20-100nm), it exhibits enhanced sinterability compared to conventional micron-sized powders, making it valuable for advanced ceramics and composite materials. The compound crystallizes in an orthorhombic structure where vanadium and boron atoms form strong covalent bonds. Industrial production typically involves high-temperature reactions between vanadium oxides and boron sources, followed by plasma-assisted size reduction. Its nano-form provides larger surface area for interfacial bonding in composite matrices.
Physical and Chemical Properties
VB nanopowder maintains remarkable stability up to 1100°C in oxidizing environments and higher temperatures in inert atmospheres. The material's Vickers hardness exceeds 2800 kg/mm², surpassing many conventional hard materials. Its thermal conductivity (~35 W/m·K) and electrical conductivity enable dual functional applications. Unlike micron-scale counterparts, the nanopowder shows atypical plasticity at room temperature due to grain boundary sliding mechanisms. The material is chemically inert to most acids except hydrofluoric acid mixtures. X-ray diffraction patterns typically show predominant (110) and (200) crystal plane orientations in commercial products.
Main Applications
In the tooling industry, VB nanopowder serves as a reinforcement phase in tungsten carbide composites, improving fracture toughness by 30-40% while maintaining hardness. Aerospace applications include thermal barrier coatings for turbine blades, where its thermal expansion coefficient (7.2×10⁻⁶/K) matches well with nickel superalloys. The nuclear sector utilizes VB's high neutron absorption cross-section (especially for thermal neutrons) in control rod coatings. Emerging applications include diffusion barriers in semiconductor packaging and conductive additives for specialty batteries. Recent research explores its potential in catalytic converters due to surface defect sites on nanoparticles.
Safety and Storage
As with most nanoscale powders, VB requires strict handling protocols to prevent dust formation. Engineering controls should include local exhaust ventilation and HEPA filtration. Personnel must wear NIOSH-approved N95 respirators and protective gloves during handling. Storage demands double-layer packaging with inner moisture-proof aluminum bags and outer vacuum-sealed containers. Argon or nitrogen blanket is recommended for long-term storage. The powder should be kept away from strong oxidizers and moisture sources. Spills should be addressed with wet cleanup methods to avoid dust dispersion.
B2B Procurement Guide
Industrial buyers should specify purity requirements (typically 99% or 99.5%), primary particle size (D50 value), and surface area (BET method). Batch-to-b consistency requires certificates for oxygen content (<1.5% desirable) and metallic impurities (especially Fe, Cr). Reliable suppliers provide TEM/SEM images for morphology verification. Minimum order quantities often start at 100g for R&D grades and 1kg for production volumes. Lead times vary from 2-8 weeks depending on customization needs. Some manufacturers offer surface modification services (e.g., silane treatment) for improved dispersion in polymer matrices at additional cost.
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