In the high-end manufacturing industry is constantly pursuing high-temperature stability, low coefficient of friction, excellent thermal conductivity today, boron nitride ceramics are gradually replacing the traditional metal as the core components of semiconductors, vacuum systems, high-temperature furnaces and other fields.

Boron Nitride Ceramics (Boron Nitride Ceramics) is a new type of inorganic non-metallic material, structurally divided into hexagonal boron nitride (h-BN) and cubic boron nitride (c-BN) two crystal types. Hexagonal boron nitride has a layered structure and exhibits lubricating properties similar to graphite; cubic boron nitride is known for its hardness close to diamond.

Therefore, boron nitride ceramics have the characteristics of “self-lubrication”, “high temperature stability”, “low friction”, “high insulation” and “high thermal conductivity”. "High thermal conductivity" and other characteristics, becoming an ideal alternative for many high-precision equipment.

Boron nitride ceramics belong to the nitride system of ceramic materials, is a typical new type of inorganic non-metallic materials. It is neither a metal nor an organic polymer, but a ceramic solid material with covalent bond structure.

Boron nitride ceramics are typical non-oxide ceramics with high thermal conductivity, low coefficient of thermal expansion, excellent electrical insulation properties, and extreme chemical stability. This makes it excellent in electronic packaging, vacuum furnace structural components, aerospace thermal protection and ceramic manufacturing.

• Ultra-high temperature resistance: Boron nitride ceramics are temperature resistant up to 2000°C or more (in an inert atmosphere), and remain structurally stable in a high-temperature vacuum environment.

• Excellent thermal conductivity: Boron nitride ceramics have a thermal conductivity as high as 40-60 W/m-K, far exceeding most engineering ceramics.

• Low friction and self-lubricating: Hexagonal boron nitride laminates provide natural lubricating properties, making it ideal for high speed use.

• Strong insulating properties: volume resistivity over 10¹⁴ Ω-cm, suitable for high voltage and high frequency fields.

• Strong chemical stability: not easy to react in acid, alkali and molten metal environments.

• Lightweight and high strength: Boron nitride ceramics have a density of only about 2.1-2.3 g/cm³, which is lighter than ceramics such as alumina and silicon carbide.

• Lower mechanical strength: Compared to silicon nitride or zirconia ceramics, boron nitride ceramics have a low flexural strength and are not suitable for shock loads.

• Hygroscopicity: Slight performance degradation may occur when exposed to moisture.

• High manufacturing cost: the hot press sintering process is complex, ceramic boron nitride is relatively expensive.

• Difficult to process: Dense BN ceramics are hard and brittle, requiring high requirements for processing equipment and tools.

In summary, boron nitride ceramics perform extremely well in special environments such as high temperature, vacuum, corrosion, and insulation, but should be used with caution in heavy-duty, high-impact applications.

It can be seen that boron nitride ceramics have irreplaceable performance advantages in high-temperature and insulating scenarios, while silicon nitride ceramics are superior in terms of mechanical strength and impact resistance.

Zhihao Ceramics produces high purity BN ceramic components using a hot press sintering process, the main steps of which include:

Raw material purification → homogeneous mixing → mold molding → high temperature and high pressure sintering → precision processing → surface treatment and testing

Through strict temperature and pressure control, the dense structure of hot-pressure sintered boron nitride ceramics is obtained, and its mechanical properties and thermal conductivity are superior to those of ordinary BN materials.
In addition, the company offers composite boron nitride ceramics (e.g., BN+Si₃N₄, BN+AlN) solutions to meet the strength and thermal conductivity needs of different application environments.

• Advanced Manufacturing Capabilities
• Guaranteed material performance
• Precision machining and customization capabilities
• Engineering and after-sales technical support
• Honest cooperation and global delivery

Ltd. (Great Ceramic) is one of the leading boron nitride ceramics manufacturers in China, focusing on the research and development of boron nitride ceramic rods, crucibles, ceramic tubes and composite ceramic parts for more than ten years, widely serving scientific research colleges and high-end equipment manufacturing industry.

The price of boron nitride ceramics is affected by purity, density, size, process and composite material.
Generally speaking:

• Hot-pressed dense BN ceramics: Prices range from hundreds to thousands of RMB per piece;

• CVD deposited boron nitride products: higher price, suitable for semiconductor vacuum chamber;

• Composite boron nitride ceramic tube or crucible: adjustable depending on thickness and diameter.

It is recommended to prioritize when choosing:

1. Thermal conductivity parameters (W/m-K);

2. Coefficient of Thermal Expansion Matchability (CTE);

3. Apply temperature intervals and atmosphere types;

4. Surface accuracy and wear life.

The future of BN ceramic technology will be in the following directions:

• BN-Si₃N₄ composite ceramics: balancing high strength and thermal conductivity;

• BN-AlN composite ceramics: Improved thermal management performance for electronics packaging;

• Transparent boron nitride ceramics: for optical windows and infrared sensing devices;

• 3D printed BN ceramics: customized manufacturing solutions for complex ceramic shapes.

Boron nitride ceramics is not only a representative of new inorganic non-metallic materials, but also an indispensable core component of future high-end equipment.
Whether in high-temperature, vacuum, insulation, thermal conductivity or corrosion-resistant environments, boron nitride ceramics exhibit a combination of properties that are difficult to match with metals and traditional ceramics.

If you are looking for high performance boron nitride ceramic parts, please contact Great Ceramic (Shenzhen) specializes in boron nitride ceramics for ten years, providing reliable ceramic solutions for factories and research institutes around the world.