Hexagonal Boron Nitride (h-BN) Powder With 99.5% Purity Cas No.10043-11-5

Hexagonal Boron Nitride (h-BN) Powder With 99.5% Purity Cas No.10043-11-5

Product Properties

Hexagonal Boron nitride (h-BN) remains serviceable up to 2800 °C under nitrogen or argon atmosphere, featuring high heat capacity and exceptional high-temperature stability. Its thermal conductivity is approximately ten times that of quartz, paired with a low thermal expansion coefficient that endows the material with outstanding thermal shock resistance.

In terms of electrical performance, it boasts favorable electrical insulation, high dielectric strength, low dielectric constant and low high-frequency loss, while allowing microwave penetration. Chemically robust, it is inert to most molten metals and resistant to weak acids, room-temperature strong alkalis, salt solutions and organic solvents. It is insoluble in cold water and undergoes extremely slow hydrolysis in boiling water. It can be safely used below 1000 °C in air but oxidizes readily at elevated temperatures.

In addition, the material is non-toxic, non-abrasive, low-wear, non-stick and biocompatible with easy machinability, alongside strong neutron absorption capability, making it a versatile special ceramic material.

Product Advantages

Custom-developed h-BN powder by BoronHub features high crystallinity and flaky structure with large specific surface area and ultra-high purity; particle sizes can be tailored to below 1 μm. Matching premium global product standards, it adapts to stringent working scenarios including high-temperature lubrication, thermal conductive insulation and neutron shielding, delivering differentiated high-performance material solutions for customers.

Corporate Specifications of Hexagonal Boron Nitride (h-BN)

What are the Main Application Fields & Specific Uses of Hexagonal Boron Nitride (h-BN)?

1. Lubrication & Release Agent Sector

Core merits utilized: high-temperature lubricity, low friction, non-stick property and chemical inertness

High-temperature solid lubricants: Mechanical lubrication under extreme temperature conditions

Metal forming release agents: Prevent mold adhesion during die casting, forging and other processes

Anti-wear additives for extruded profiles: Improve surface finish of extrudates and extend mold service life

Metal wire drawing lubricants: Reduce friction and abrasion in wire drawing processes

Anti-sticking agent for molten materials: Avoid adhesion between high-temperature melts and container inner walls

2. Metallurgy & Refractory Material Sector

Core merits utilized: high temperature resistance, corrosion resistance and non-wettability against molten metals

High-temperature refractory materials: Metallurgical crucibles, inner linings for high-temperature electrolytic cells

 

Composite ceramic evaporation boats: For metal vapor deposition (e.g., aluminum evaporation)

Horizontal continuous casting separating rings: Prevent bonding between casting billets and crystallizers

 

Side sealing plates for thin-strip continuous casting: Withstand high-temperature molten metal while maintaining sealing performance

High-temperature crucibles and molds: Melting of active metals and special alloys

Amorphous ribbon casting nozzles / atomization nozzles for metal powder: Excellent erosion and corrosion resistance

 

3. Electronics & Thermal Management Sector

Core merits utilized: superior insulation, high thermal conductivity, low dielectric loss and microwave permeability

Chip thermal management materials: Coated or compounded on chip surfaces; the two-dimensional structure delivers lateral heat conduction to lower hot-spot temperatures and extend device service life and reliability

Thermally conductive fillers for polymers: Incorporated into resins, rubber and plastics to boost thermal conductivity while retaining electrical insulation; ideal for flexible electronics, LED packaging and 5G communication modules

High-voltage & high-frequency insulating components: Plasma arc insulators, motor insulating assemblies

Low-loss high-frequency substrates: Microwave and millimeter-wave circuit boards

4. Aerospace Sector

Core merits utilized: exceptional thermal stability, low dielectric loss, thermal shock resistance and ion sputtering resistance

High-temperature radomes / antenna windows: Composite with silicon nitride or silicon oxide to integrate thermal protection, load-bearing and wave-transmitting functions

Nozzles for rocket and aero engines: High temperature endurance, cyclic thermal shock resistance and electrical insulation

Spacecraft thermal shielding materials: Lightweight and ablation-resistant

5. Boron Nitride-Based Ceramics & High-Temperature Components

Core merits utilized: machinability, high thermal conductivity, corrosion resistance and thermal shock resistance

Insulating components for high-temperature furnaces: Heating element supports, heat shielding plates

Thermocouple protection tubes: Shield temperature sensing elements in corrosive or high-temperature atmospheres

 

High-temperature mechanical parts: Oil-free lubricated bearings, valves and gaskets

Saggers and setter plates for ceramic sintering: No chemical reaction with sintered workpieces for easy separation

Molds and crucibles for molten metals: Especially suitable for highly active metals such as aluminum, magnesium and titanium

 

6. Cosmetics Sector

Core merits utilized: non-toxicity, pure white color, smooth lubricity, luster, strong adhesion and low friction coefficient

Premium cosmetic fillers: Lipsticks, liquid foundations, loose powders, eyeshadows, etc. Deliver silky texture, coverage and gloss, softer than traditional mineral powders

7. Nuclear Industry Sector

Core merits utilized: powerful neutron absorption and chemical stability

Neutron shielding and packaging materials: Barriers and containers for neutron radiation protection

Structural parts of nuclear reactors: Moderators, reflectors and control rod assemblies

8. Other Industrial Applications

Anti-corrosion coating fillers: Adding h-BN into coatings enhances high-temperature resistance, anti-sticking and anti-corrosion performance

Raw material for special composite ceramics: Used as matrix or reinforcing phase to fabricate machinable ceramics, wave-transparent ceramics and more