Boron nitride porous ceramic block

Boron nitride porous ceramic block is a porous functional ceramic material mainly composed of hexagonal boron nitride (h-BN), prepared through advanced molding and sintering processes. It uniquely combines the excellent properties inherent in hexagonal boron nitride with a controllable porous structure, providing a disruptive solution for thermal management, electrical insulation, and material transport in extreme environments. This product not only has standard specifications, but also supports deep customization to meet the demanding requirements of specific applications.

Core product advantages: Why choose boron nitride porous ceramic blocks?
The success of boron nitride porous ceramic blocks stems from several irreplaceable material advantages, including:

1. Excellent high-temperature stability
   High temperature resistance: Under inert or reducing atmosphere, it can work stably for a long time above 1800 ° C and withstand peak temperatures up to 2100 ° C in the short term.
   Excellent thermal shock resistance: Its extremely low coefficient of thermal expansion and good thermal conductivity enable it to withstand drastic temperature changes without cracking, and its reliability far exceeds traditional porous materials such as alumina and quartz.
2. Excellent thermal conductivity and dielectric properties
   High thermal conductivity: The porous structure still maintains significant thermal conductivity, which can serve as an insulation material and achieve efficient heat dissipation in specific directions, avoiding heat accumulation.
   Outstanding electrical insulation: high resistivity and low dielectric constant/loss make it an ideal insulation and transmission material for high-temperature and high-frequency electronic devices.
3. Controllable pore structure
   Adjustable pore size and porosity: Through process control, pore size distribution from micrometer to millimeter level can be achieved, as well as wide range porosity customization from 30% to 85%.
   Connecting three-dimensional networks: Most pores are interconnected, providing a uniform and low resistance flow path for gases, liquids, or molten metals.
4. Excellent chemical inertness and non wettability
   Strong corrosion resistance: It has excellent resistance to most molten metals (such as aluminum, copper, molten steel), glass melts, and salts, and does not react.
   Non wetting surface: Molten metal and slag are difficult to adhere, making it easy to clean and maintain, and extending its service life.

Key problems solved and application scenarios
This product is designed to solve the failure problem of traditional porous materials under harsh working conditions.
Problem gelöst:
Structural failure under high temperature: replace traditional porous ceramics (such as aluminum oxide foam) to solve the problem of brittle fracture and short life under high temperature or thermal shock.
Pollution and blockage in metal processing: Replace graphite and ordinary refractory materials to avoid carbon pollution to molten metals and solve pore blockage caused by wetting.
The contradiction between high temperature insulation and heat dissipation: providing an integrated solution in scenarios where electrical insulation, electromagnetic wave penetration, and heat management need to be achieved simultaneously.
Degradation of materials in corrosive environments: In reinforced corrosive environments, provide filtration solutions with longer lifespan and higher purity than metal filters.

Main application areas:

1. Metal melt filtration and purification: used in the continuous casting process of non-ferrous metals such as aluminum, copper, zinc, and special alloys, effectively removing non-metallic inclusions in the melt and improving the quality of castings.
2. High temperature insulation and heat dissipation system: As an insulation layer for aerospace engines and high-temperature furnaces, or as a heat dissipation skeleton for electronic device substrates, it achieves efficient thermal management.
3. Functional carriers and catalyst supports: Their high specific surface area and chemical stability make them ideal carriers for high-temperature catalytic reactions (such as automotive exhaust treatment) and sensor probes.
4. Plasma arc support and isolation: In plasma welding, cutting, and metallurgical equipment, it serves as a stable medium and electrical isolation component for the arc.
5. Semiconductor process equipment: Boats and fixtures used in semiconductor diffusion and annealing processes to support silicon wafers in high-purity environments, with no pollution and high temperature resistance.

Customized service: meet your exclusive needs
We are well aware that standard products cannot cover all complex applications. Therefore, we provide comprehensive customization services to ensure that the product perfectly matches your system.
Individuelle Anpassung von Größe und Form: We can provide near net forming processing for simple blocks, discs, and complex shaped parts according to customer drawings.
Customization of pore characteristics: Accurately control the average pore size, pore size distribution, porosity, and bulk density of the product to match specific filtration accuracy, permeability, or specific surface area requirements.
Performance optimization customization: The compressive strength and thermal conductivity grade of the product can be adjusted according to the needs, or other functional phases (such as SiC, AlN) can be composite in the matrix to obtain enhanced specific performance.
Surface modification treatment: providing special surface coatings or treatments to further improve its non wettability, oxidation resistance, or catalytic activity.

Boron nitride porous ceramic blocks represent the high-performance frontier of porous ceramic material technology. It provides a reliable and efficient platform material for solving a series of industrial technical problems in extreme environments through its unique high-temperature stability, controllable thermal/insulation properties, and excellent chemical inertness. Whether it is used to improve metal quality, ensure the safety of high-temperature equipment, or empower cutting-edge scientific research, it has demonstrated enormous potential for application.

Brudeze Keramiken liefert und verkauft eine breite Palette von hochwertigem Quarzglas, einschließlich Aluminiumoxidkeramik, Zirkoniumdioxidkeramik, Siliziumnitridkeramik, Aluminiumnitridkeramik, Siliziumkarbidkeramik, Borkarbidkeramik, Biokeramik, maschinell bearbeitbare Keramik usw. Wir sind in der Lage, die Anforderungen an die Anpassung verschiedener Keramikprodukte zu erfüllen.