Hexagonal Boron Nitride

Hexagonal Boron Nitride (h-BN)--Applications

1. Electronics: High‑frequency circuits, packaging thermal fillers, high‑voltage insulation—addressing insulation and heat dissipation in high‑power components.
2. Metallurgy & Chemicals: Release agents for metal forming, high‑temperature crucible linings, corrosion‑resistant coatings—extending equipment life and improving precision.
3. Aerospace: High‑temperature radome windows, rocket‑engine insulation—ensuring stability under extreme thermal and operational conditions.
4. Lubrication: A solid lubricant for bearings, gears, seals, and other friction‑prone mechanical parts.
5. Optics: Good transparency suits optical windows, filters, and high‑temperature equipment like infrared detectors.
6. Automotive: High‑temperature materials for engine/exhaust components improve heat resistance and reliability; also used as a lubricant additive in friction materials to boost performance.

5D-Materials h-BN Advantages

1. High Production Capacity: Annual output of 5,000 tons ensures stable supply .
2. High Purity: Products exceed 99% purity​ with low impurities and uniform particle size distribution .
3. Customization: Tailored particle sizes (3–22 μm) and purity grades (98%–99.5%) available

Definition of Hexagonal Boron Nitride：

Hexagonal boron nitride (h‑BN) is a 1:1 boron‑nitrogen compound that melts above 3000 °C, remains stable to 2000 °C in inert/vacuum conditions, and resists oxidation up to 900 °C. Its electrical resistivity exceeds 10¹² Ω·cm with a breakdown voltage of 30 kV/mm, offering excellent insulation for high‑frequency circuits and microwave devices. Thermal conductivity reaches 50 W/(m·K)—among the highest in ceramics—and its low friction coefficient (0.16) provides superior self‑lubrication in high‑temperature, vacuum, or corrosive environments.
Chemically inert, h‑BN withstands strong acids, alkalis, molten metals, and glass. A wide bandgap (~5.9 eV) ensures UV‑to‑IR transparency for high‑temperature optical windows. Combined with low thermal expansion (7.5×10⁻⁶/°C) and excellent thermal‑shock resistance, it serves as a key high‑performance material in demanding applications across high‑temperature equipment, metallurgy, and aerospace.