Boron Carbide Powder

Boron Carbide Powder is a super-hard inorganic non-metallic powder with the chemical formula B₄C, prepared by high-temperature synthesis reactions (such as carbothermal reduction, self-propagating high-temperature synthesis, etc.) using elemental boron and carbon as raw materials. Its appearance is mostly gray-black or black, and the particle shape can be adjusted to irregular, near-spherical, etc., through process control. The particle size range covers nanoscale to micron-scale, which can meet the processing needs of different application scenarios. NexusX Advanced Materials, as a premier manufacturer and supplier of high-quality boron carbide products, focuses on producing high-purity boron carbide powder for diverse application fields.

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Boron Carbide Powder Data Sheet

Purity:	99%
CAS:	12069-32-8
Color:	Dark grey
Chemical Formula:	B₄C
Particle Size:	0.1 μm, 0.8 μm, 2.3 μm, or customized
Density:	2.508~2.512 g/cm³
Melting Point:	2,350°C
Boiling point:	3500°C
shape:	Irregular

Boron Carbide Powder Description

Boron Carbide Powder is known for its ultra-high hardness, low density, and exceptional resistance to wear and chemical corrosion, making it a preferred material in ballistic armor, abrasives, and high-temperature applications. Its fine particle size and stable chemical properties ensure consistent performance in ceramic processing, metal matrix composites, and nuclear-grade applications. In addition to this irregular powder form, we also provide spherical Boron Carbide Powder, which offers improved flowability and packing density for use in additive manufacturing, thermal spraying, and advanced powder metallurgy.

Boron Carbide Powder Specifications

Product	Chemical Composition (%)
B₄C	B	C		N		O
	79.0	19.2		0.2		1.4
	Particle Size Distribution
	D10		D50		D90
	0.1μm		0.8μm		2.3μm
	BET
	15 m²/g

Boron Carbide Powder SEM

Boron Carbide Powder Advantages

Ultra-high hardness
Low density
Excellent chemical stability
High thermal resistance
Fine particle control
Versatile application range

Boron Carbide Powder Applications

Raw Material for Product Molding: Through sintering and molding processes, it is made into boron carbide nozzles, bulletproof inserts, neutron shielding blocks, etc., suitable for high-wear, corrosion-resistant and radiation protection scenarios.
Reinforcing Agent for Metal Matrix Composites: Mixed into aluminum and magnesium matrices, it improves material hardness and wear resistance. It is used in aerospace structural parts and automobile engine components, while achieving lightweight.
Ceramic Coating Preparation: Wear-resistant and anti-corrosion ceramic coatings are made via thermal spraying, which are applied to mechanical parts and the inner walls of chemical equipment to extend the service life of substrates and reduce maintenance costs.
Modifier for Refractories: Added to refractory bricks and castables, it enhances high-temperature stability and slag resistance, suitable for high-temperature scenarios such as blast furnace linings and industrial kilns.
Precision Abrasive and Polishing Agent: Directly used as abrasive powder or polishing powder for polishing semiconductor silicon wafers and optical glass, it features high efficiency, reduces surface scratches and ensures processing precision.

Boron Carbide Powder Packaging

The Boron Carbide Powder is carefully placed in wooden cases or cartons with additional support from soft materials to prevent any shifting during transportation. This packaging method guarantees the integrity of the products throughout the delivery process.

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FAQ

What are the main preparation methods of boron carbide powder and their features?

Two mainstream methods. ① Carbothermal reduction: Mature process, low cost, suitable for large-scale production, but long reaction cycle. ② Self-propagating high-temperature synthesis: Fast reaction, low energy consumption, suitable for small-batch preparation, but uneven product particle size.

How does the particle size of boron carbide powder affect its application?

Nano-scale is for precision coatings and composites (needs dispersibility); coarse micron-scale for abrasives and refractory additives; medium particle size (several microns) for sintered products (e.g., nozzles). Uneven particle size degrades product performance.

Why can boron carbide powder be used for neutron shielding in nuclear power?

Boron-10 isotope efficiently absorbs slow neutrons without long-half-life radioactive products. The powder also has low density and good chemical stability, making shielding blocks easy to process for nuclear power equipment.

What to note when storing boron carbide powder?

① Moisture-proof: Fine powder absorbs moisture and agglomerates, so seal and store in a dry environment. ② Impurity prevention: Avoid mixing debris/dust to prevent equipment scratches or product defects during processing.

What advantages does boron carbide powder have over alumina powder as an abrasive?

Higher hardness (Mohs 9.3 vs. 9), 30%-50% higher grinding efficiency for hard materials; lower wear rate, longer service life; and finer scratches on workpieces, suitable for precision polishing.

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