Overview of Chemically Inert Bn Tube Boron Nitride Ceramic

Chemically Inert Bn Tube Boron Nitride Ceramic ceramics are a class of advanced technical ceramics, often referred to as “white graphite.” They are renowned for their unique combination of properties, including high thermal conductivity, excellent electrical insulation, and outstanding thermal shock resistance. Available in various forms such as hot-pressed solids, coatings, and composites, BN ceramics are critical in demanding applications across aerospace, electronics, and metallurgical industries.

Features of Chemically Inert Bn Tube Boron Nitride Ceramic

• High Thermal Conductivity: Offers excellent heat dissipation, similar to metals, while maintaining electrical insulation.

• Excellent Thermal Shock Resistance: Withstands extreme and rapid temperature changes without cracking.

• Superior Electrical Insulation: Maintains high resistivity even at elevated temperatures.

• Low Dielectric Constant and Loss: Ideal for high-frequency and microwave applications.

• Good Chemical Inertness: Resists attack from most molten metals, slags, and salts.

• Non-wetting and Non-reactive: With many molten metals like aluminum and copper.

• High Temperature Stability: Can be used in inert or vacuum atmospheres up to 3000°C.

• Machinability: Can be precision-machined into complex shapes using conventional tools, unlike many other advanced ceramics.

Specifications of Chemically Inert Bn Tube Boron Nitride Ceramic

Chemically inert BN tubes are made from boron nitride ceramic. This material offers outstanding thermal stability and electrical insulation. These tubes resist chemical attack from most molten metals and corrosive gases. They perform well in harsh environments like high-temperature furnaces.

Standard tube dimensions vary. Common outer diameters range from 5mm to 100mm. Wall thicknesses are typically between 1mm and 10mm. Tube lengths are usually available up to 1000mm. Custom sizes are often possible. The material maintains its shape under extreme heat. It handles sudden temperature changes well.

Material purity is critical. High-purity boron nitride (over 99%) is standard. This minimizes contamination in sensitive processes. The material stays non-wetting to many molten metals. Crucibles and thermocouple protection sleeves are common uses.

Thermal properties are key strengths. Maximum continuous use temperature reaches 850°C in air. It can withstand short bursts up to 2800°C in inert atmospheres. Thermal conductivity is moderate. It is lower than metals but higher than many other ceramics. This helps manage heat transfer.

Electrical insulation is excellent. Boron nitride is a strong dielectric material. Volume resistivity stays very high even at elevated temperatures. This prevents electrical short circuits. The ceramic is also transparent to microwaves.

Mechanical strength is adequate for the application. Flexural strength falls within the range of 30-50 MPa. Compressive strength is higher. The material is relatively soft. It can be machined easily to precise tolerances before final sintering. Handle finished tubes with care. Avoid heavy impacts.

Applications of Chemically Inert Bn Tube Boron Nitride Ceramic

Chemically inert BN tube boron nitride ceramic offers unique advantages. This material handles extreme conditions well. It resists most acids, alkalis, and molten metals. BN tubes won’t corrode easily. They maintain strength at very high temperatures. This makes them reliable in tough environments.

Semiconductor manufacturing relies heavily on BN tubes. They transport corrosive gases safely inside equipment. BN tubes are electrical insulators. They prevent unwanted electrical currents during processes. Their purity prevents silicon wafer contamination. Semiconductor makers trust BN for consistent results.

Metal processing uses BN tubes crucially. They make excellent thermocouple protection sheaths. Molten aluminum, copper, or steel does not damage them. BN tubes provide accurate temperature readings. They last longer than metal sheaths in molten baths. Foundries save money with reduced downtime.

Aerospace and high-tech fields need BN tubes. They function well as high-temperature insulators. Their low thermal expansion prevents cracking under heat stress. Engineers choose BN for parts in jet engines and rocket nozzles. The material stands up to intense heat and vibration.

Laboratory settings benefit from BN tubes. They are ideal liners for high-temperature furnaces. Researchers use them for sample holders with reactive chemicals. BN tubes work for thermocouple protection in corrosive experiments. Their inert nature ensures test integrity. Labs value their long service life.

Company Profile

Tanki New Materials Co.Ltd. focus on the research and development, production and sales of ceramic products, serving the electronics, ceramics, chemical and other industries. Since its establishment in 2015, the company has been committed to providing customers with the best products and services, and has become a leader in the industry through continuous technological innovation and strict quality management.

Our products includes but not limited to Aerogel, Aluminum Nitride, Aluminum Oxide, Boron Carbide, Boron Nitride, Ceramic Crucible, Ceramic Fiber, Quartz Product, Refractory Material, Silicon Carbide, Silicon Nitride, ect. please feel free to contact us.

Payment Methods

T/T, Western Union, Paypal, Credit Card etc.

Shipment Methods

By air, by sea, by express, as customers request.

5 FAQs of Chemically Inert Bn Tube Boron Nitride Ceramic

Chemically inert BN tube boron nitride ceramic stands out in demanding applications. People often ask what exactly this material is. It’s a special ceramic made only from boron and nitrogen atoms. This structure gives it unique properties. BN tubes are extremely resistant to heat. They handle sudden temperature changes well without cracking. BN also strongly resists attack by almost all molten metals and salts. It doesn’t react with them. This makes it very stable in harsh chemical environments. BN is also an excellent electrical insulator. It doesn’t conduct electricity at all.

Many users need the maximum temperature these tubes withstand. BN tubes perform reliably in inert atmospheres or vacuum up to 1800°C (3272°F). In air, oxidation slowly happens above 1000°C (1832°F). Long-term use in air is best kept below 800°C (1472°F). The exact limit depends on the specific BN grade and the atmosphere.

Knowing common applications helps choose the right part. BN tubes excel where heat and corrosion meet. They are perfect sleeves for thermocouples in molten metal. They protect sensors. BN tubes guide molten metal flow. They act as crucibles for melting reactive metals. BN tubes serve as insulators in high-temperature furnaces. They isolate electrical parts. They are ideal for semiconductor processing equipment parts.

Keeping BN tubes clean matters for performance. Cleaning is usually simple. Use mild soap and water for most dirt. For tougher deposits, isopropyl alcohol often works well. Avoid harsh acids or strong alkalis. They might damage the surface slightly over time. Gentle mechanical cleaning with a soft brush is safe. Avoid abrasive scrubbers.

Handling BN tubes requires care. They are ceramics. They can chip or break if dropped or hit hard. Always support long tubes fully. Avoid point loads or bending forces. Store tubes securely to prevent rolling or vibration damage. Use clean gloves when handling. Oils from skin can sometimes cause issues in very high-purity processes. BN is generally safe to handle. It creates minimal dust compared to some ceramics. Standard workshop safety practices are sufficient.