Boron nitride ceramic ring

Boron nitride ceramic ring is a key industrial component made of high-purity boron nitride (BN) material sintered by advanced technology. It has become an irreplaceable solution in high-end fields such as semiconductors, metallurgy, aerospace, and electronics due to its unique combination of thermal, electrical, chemical, and mechanical properties.

Core product advantage: Excellent performance based on materials science
The performance advantage of boron nitride ceramic rings lies in their inherent crystal structure, and the following characteristics can be tested and verified under industry standards such as ASTM and GB.

1. Eccellente resistenza alle alte temperature e stabilità termica
   Maximum operating temperature: It can be used up to 3000 ° C in an inert or vacuum environment.
   Thermal shock resistance: Its extremely low coefficient of thermal expansion (~2-6 × 10 ⁻⁶/° C) and high thermal conductivity (25-60 W/m · K) enable it to withstand drastic temperature changes without cracking, far exceeding traditional ceramics such as alumina and zirconia.
   Non melting: Under normal pressure, boron nitride sublimates at 3000 ° C without melting, and no liquid phase is produced.
2. Excellent electrical insulation and thermal conductivity
   High insulation strength: breakdown voltage>30 kV/mm at room temperature, making it an ideal high-temperature insulator.
   High thermal conductivity: The thermal conductivity coefficient is equivalent to stainless steel, which can quickly dissipate heat and achieve a “hot but non-conductive” electrical insulation scenario, effectively solving the heat dissipation problem of electronic components.
3. Excellent chemical inertness
   It exhibits excellent resistance to most molten metals (such as aluminum, copper, molten steel), glass melts, acidic slag, and corrosive gases, and is not wetted or involved in reactions.
   It is an ideal material for melting high-purity metals and semiconductor crystal growth containers.
4. Good machinability and self-lubricating properties
   The hardness is relatively low (Mohs hardness of about 2), and conventional processing equipment can be used for turning, milling, drilling, etc., making it easy to produce complex shaped precision parts with a processing accuracy of ± 0.01mm.
   It has a layered structure similar to graphite, low friction coefficient (0.2-0.4), self-lubricating properties, and is suitable for oil-free lubrication scenarios such as bearings and guide rails.

Typical application scenario: Addressing core pain points in the industry
Boron nitride ceramic rings, with their comprehensive properties, have solved problems that traditional materials cannot cope with in the following fields.

1. Industria dei semiconduttori e dell'elettronica
   Applications: Molecular beam epitaxy (MBE) crucibles, containers and components for semiconductor crystal growth (such as GaAs), insulation components for plasma etching equipment, and heat dissipation substrates for electronic packaging.
   Solution: Replace graphite to avoid carbon pollution; Provide reliable insulation at high temperatures; Realize high purity and precise temperature control during wafer processing.
2. Metallurgy and High Temperature Treatment
   Application: Conveyor pipelines for molten metals (especially aluminum, copper, precious metals), thermocouple protection tubes, evaporation boats, and lining for sintering molds.
   Problem solving: Resist erosion and adhesion of molten metal, extend component life; Ensure the purity of the metal melt; Endure thermal shock during the melting casting process.
3. Aerospace and Vacuum Technology
   Applications: Vacuum furnace insulation support, high-temperature bearings, rocket nozzle lining, microwave windows.
   Problem solving: Extremely low deflation in ultra-high vacuum environment, without affecting the vacuum degree; Maintain dimensional stability and lubrication under high temperature and high load.
4. Chemical and New Material Synthesis
   Application: Synthesis of cubic boron nitride (cBN), lining of high-temperature synthesis reactors, and sealing rings for high-pressure reactors.
   Problem solving: Resistant to corrosive environments with high pressure and high temperature; As an inert medium, it does not contaminate the reaction products.

The key problems we can solve
Compared with traditional metal or oxide ceramics, boron nitride ceramic rings are the key to solving the following systemic problems:
The contradiction between “high temperature” and “insulation”: In situations where it is necessary to withstand extremely high temperatures while maintaining absolute electrical insulation, it is one of the few feasible options.
The contradiction between “heat dissipation” and “insulation” provides a path for high-power electronic devices that is both insulated and efficiently thermally conductive.
The contradiction between “corrosion resistance” and “thermal shock resistance”: In corrosive environments with severe temperature fluctuations (such as metal melting), it has a longer service life and reliability than materials such as quartz and alumina.
The contradiction between “precision” and “extreme environmental resistance”: high precision can be achieved through mechanical processing, while this precision can be maintained for a long time in extreme environments.

Customized services: meet your specific needs
We are well aware that standard products cannot cover all application scenarios. Therefore, we offer comprehensive customized services:
Personalizzazione delle dimensioni: Inner diameter, outer diameter, height, and special shapes (such as irregular rings, slotted/perforated rings) can be customized according to your drawings.
Purity and grade customization: We offer different purity choices from industrial grade (~95%) to high-purity grade (>99%) to meet applications with stringent purity requirements.
Ottimizzazione delle prestazioni: Targeted optimization can be achieved in thermal conductivity, mechanical strength, dielectric constant, and other properties by adjusting the sintering process and additives.

Boron nitride ceramic ring is a high-tech ceramic product with unique properties and wide applications. Its outstanding performance in extreme multi field coupling environments (thermal electric chemical mechanical) makes it a key material component driving the development of advanced manufacturing, semiconductor, aerospace and other technologies.

Ceramica Brudeze fornisce e vende un'ampia gamma di vetri di quarzo di alta qualità, tra cui ceramica di allumina, ceramica di zirconia, ceramica di nitruro di silicio, ceramica di nitruro di alluminio, ceramica di carburo di silicio, ceramica di carburo di boro, bioceramica, ceramica lavorabile, ecc. Siamo in grado di soddisfare le esigenze di personalizzazione di vari prodotti ceramici.