High purity and high temperature boron nitride tube

Overview of Boron Nitride Tube

Boron Nitride Tube is a kind of inorganic non-metallic material with excellent performance. Boron Nitride Tube has a high melting point, high hardness, good chemical stability and thermal stability, and can maintain stable performance in high temperatures, strong corrosion and other harsh environments. At the same time, boron nitride tube also has good insulation and thermal conductivity, so it is widely used in semiconductors, metallurgy, chemical industry, etc. It can be used to manufacture high-temperature furnace tubes, semiconductor chip manufacturing process tubes, and so on.

Features of Boron Nitride Tube

Boron Nitride Tube has the following remarkable features:

Excellent high-temperature resistance: Boron Nitride Tube has a high melting point and can withstand high temperatures above 1800℃. Under a high-temperature environment, its structure is stable, not easy to deform or melt, and can maintain good physical and chemical properties.

Strong chemical stability: it has excellent corrosion resistance to acid, alkali and other chemicals, is not easily eroded by chemicals, and can work stably for a long time in corrosive environments in the chemical industry, metallurgy and other fields.

Good insulating properties: boron nitride is an excellent insulating material. Boron nitride tube has high insulation resistance and low dielectric constant, which can effectively prevent the passage of electric current.

Excellent thermal conductivity: Despite its good insulating properties, boron nitride tube has a high thermal conductivity, which enables it to conduct heat quickly and realize efficient heat exchange. This characteristic makes it an important application in equipment that requires heat dissipation or rapid heating.

Higher mechanical strength: boron nitride tube has high hardness and strength, good wear resistance, can withstand a certain amount of pressure and impact, not easy to rupture or damage, can be used for the manufacture of wear-resistant parts and molds in machining and so on.

Good self-lubrication: Boron nitride tube has good self-lubrication performance and low friction coefficient, which can reduce friction and wear in the process of equipment operation, reduce energy loss, and improve the operating efficiency and service life of the equipment.

Specifications Table of Boron Nitride Tube

Parameter	Value/Description
Material	Usually hexagonal boron nitride (h – BN), and can also be cubic boron nitride (c – BN) or other composites
Purity	Common grades include BN99 with purity > 99%, BN – BO with purity > 98%, and BNCB with purity > 90%1
Appearance	Usually white, and some composites may be gray1
Density	1.9 – 2.1 g/cm³ for h – BN; 3.45 – 3.48 g/cm³ for c – BN3
Melting Point	2,973°C3
Solubility	Insoluble in water3
Refractive Index	1.8 for h – BN; 2.1 for c – BN3
Electrical Resistivity	10¹³ – 10¹⁵ Ω·m3
Thermal Conductivity	30 – 80 W/m·K for h – BN (anisotropic, higher perpendicular to the c – axis); 79 – 100 W/m·K for c – BN3
Max. Operating Temperature	1,800°C in air, 2,800°C in an inert atmosphere for h – BN; 1,400°C in an oxidizing atmosphere, 2,000°C in an inert atmosphere for c – BN
Mechanical Properties	Mohs hardness of 2 – 3 for h – BN, with a bending strength of 100 – 200 MPa; Mohs hardness of 9 – 10 for c – BN, with a compressive strength of 4 – 5 GPa
Chemical Resistance	Inert to most acids, alkalis, and molten metals such as Al, Cu, and Si

Play

Applications of Boron Nitride Tube

Boron Nitride Tubes have a wide range of applications in many fields due to their unique properties:

Semiconductor field: In the semiconductor chip manufacturing process, high-precision process control and a stable environment are required. Boron nitride tubes are often used as ion implantation tubes and diffusion tubes due to their high-temperature resistance and good insulating properties, which can ensure the stability and repeatability of the process at high temperatures, high voltages and other extreme conditions and help to improve the precision and quality of chip manufacturing.

Metallurgical field: In the process of metal melting and casting, it is necessary to use high-temperature-resistant and corrosion-resistant materials to contain and transport the metal liquid. The high melting point and strong chemical stability of boron nitride tubes make them an ideal choice for manufacturing crucibles, casting tubes, etc. They can effectively resist the erosion of metal liquids and prolong the service life of the equipment while ensuring the purity of metal liquids.

Chemical field: Chemical production often involves the treatment of various corrosive gases and liquids. Boron nitride tube has good corrosion resistance, can be used as reactor lining, conveying pipeline, etc., can work stably in the harsh chemical environment, prevent the equipment from being corroded, and guarantee the safety and stability of the production process.

New energy field: In the production of lithium-ion batteries, boron nitride tube can be used in a high-temperature sintering furnace as furnace tube material to provide a stable high-temperature environment for the sintering of battery materials, which helps to improve the performance of battery materials. In addition, in some solar photovoltaic industries, it can also be used in related high-temperature process equipment.

Aerospace field: Aerospace components need to work under extreme conditions such as high temperatures and high speed. Boron nitride tube’s high-temperature resistance, high strength and other characteristics make it be used in the manufacture of aero-engine parts, such as heat insulation parts, high-temperature conduit, etc., can effectively improve the performance and reliability of the engine, while reducing the weight of the components, enhance the overall performance of the aircraft.

Company Profile

RBOSCHCO is a trusted global chemical material supplier & manufacturer with over 12 years of experience in providing super high-quality chemicals and Nanomaterials. The company exports to many countries, such as the USA, Canada, Europe, UAE, South Africa, Tanzania, Kenya, Egypt, Nigeria, Cameroon, Uganda, Turkey, Mexico, Azerbaijan, Belgium, Cyprus, Czech Republic, Brazil, Chile, Argentina, Dubai, Japan, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia, Germany, France, Italy, Portugal etc. As a leading nanotechnology development manufacturer, RBOSCHCO dominates the market. Our professional work team provides perfect solutions to help improve the efficiency of various industries, create value, and easily cope with various challenges. If you are interested, please send an email to sales1@rboschco.com

Payment Term

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

Shipment Term

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

5 FAQs of Boron Nitride Tube

Q1:Are boron nitride tubes fragile? How to deal with it?

Boron nitride tubes have high hardness (Mohs hardness 2-3) but low toughness and are easily broken by impact. Avoid collision when installing, and it is recommended to use elastic clamps to fix it. If cracks occur, they should be replaced in time to prevent leakage.

Q2:What factors affect the service life of boron nitride tubes?

Temperature: Long-term high temperature will lead to slow oxidation of the material; it is recommended to use it below 1800℃.

Chemical corrosion: Avoid contact with strong oxidizing substances (e.g., fluorine gas).

Mechanical stress: Uniform loading can prolong the service life and avoid localized overheating or pressure concentration.

Q3:How to choose the right boron nitride tube?

Purity: 95%-98% purity is suitable for general industry; above 99% purity is used in the electronic or medical field.

Structure: Hexagonal boron nitride (h-BN) is used for high-temperature insulation, and cubic boron nitride (c-BN) is used for wear-resistant parts.

Specification: Pipe diameter and wall thickness are selected according to the usage environment. Customized requirements can be made by contacting the manufacturer (e.g., Kintek Solution provides 2041 mm and other specifications).

Q4:What should I pay attention to when installing and maintaining boron nitride tubes?

Installation: Avoid direct contact with metal parts to prevent galvanic corrosion; use protection tubes to prevent carbonization in carbon-containing atmospheres.

Cleaning: Remove surface deposits with ultrasonic cleaning regularly, and avoid scratching with sharp tools.

Inspection: Monthly visual inspection for cracks or wear, semi-annual X-ray inspection for internal defects.

Q5:Are boron nitride tubes environmentally friendly?

Boron nitride itself is non-toxic, but dust emission should be controlled during the production process. Some enterprises (e.g., Henan Link Materials) adopt measures such as recycling of wastewater and classification and recycling of solid waste, which are in line with environmental standards.