Molybdenum Hexaboride

Updated: 2026-09-15

Overview

Molybdenum Hexaboride (MoB6) is an advanced ceramic material composed of molybdenum and boron atoms arranged in a hexagonal lattice. Its high purity form is synthesized through solid-state reactions or chemical vapor deposition, ensuring minimal impurities for specialized industrial applications. As a refractory compound, it exhibits exceptional mechanical and thermal properties, making it suitable for extreme environments. It is often compared to tungsten carbide or boron nitride but offers unique advantages in specific niche applications.

Physical and Chemical Properties

Molybdenum Hexaboride is characterized by its extreme hardness (Vickers hardness ~20-25 GPa), rivaling some grades of synthetic diamond. The material maintains stability up to 2200°C in inert atmospheres, with low thermal expansion coefficients. Chemically, MoB6 is inert to most solvents and resistant to oxidation below 800°C. Its electrical resistivity (~10-6 Ω·m) and thermal conductivity (~30 W/m·K) make it useful in semiconductor and thermoelectric applications.

Main Applications

In industrial settings, MoB6 is primarily used as an additive in superhard coatings for cutting tools and drill bits, enhancing wear resistance. The nuclear industry utilizes its neutron-absorbing capabilities in control rods and shielding components. The electronics sector employs thin films of MoB6 in diffusion barriers for integrated circuits. Emerging applications include electrodes in aluminum production and catalysts for chemical synthesis due to its surface reactivity.

Safety and Storage

While non-flammable and non-toxic, MoB6 powder requires careful handling to prevent respiratory irritation. Use NIOSH-approved N95 masks and ensure local exhaust ventilation during processing. Store in sealed containers under argon or nitrogen to prevent surface oxidation. Bulk quantities should be kept in moisture-proof packaging, away from strong acids or bases that may degrade material properties over time.

B2B Procurement Guide

Industrial buyers should specify purity levels (typically 99.5% or 99.9%), particle size distribution (1-10µm for most applications), and crystalline structure (α-phase preferred). Reputable suppliers provide XRD analysis and ICP-MS impurity reports. Consider ordering sample quantities for performance testing in your specific application. Lead times for high-purity grades may extend to 6-8 weeks due to complex synthesis processes. Negotiate bulk discounts for orders exceeding 50kg.