Introduction of Boron Nitride Heaters

Boron Nitride Heater is a high performance heating element made of Boron Nitride (BN) material. Boron nitride is a ceramic material with excellent high temperature resistance, insulation and chemical stability, and is widely used in high temperature heating applications. Boron nitride heaters typically consist of a boron nitride matrix and an embedded heating element (such as a tungsten or molybdenum filament) that provides stable, uniform heating in extreme environments.

Features of Boron Nitride Heaters

High temperature resistance: The melting point of boron nitride is as high as 3000°C, and the heater can work stably in high-temperature environments above 2000°C.

Excellent insulation: boron nitride has high resistivity, which can effectively isolate the current and ensure the safety and stability of the heater.

Chemical stability: excellent corrosion resistance to most acids, alkalis, and molten metals, suitable for corrosive environments.

Low coefficient of thermal expansion: Boron nitride has a low coefficient of thermal expansion, which can maintain dimensional stability at high temperatures and avoid cracking or deformation.

High Thermal Conductivity: Boron nitride has high thermal conductivity, enabling fast and uniform heating.

Mechanical Strength: Boron nitride heaters maintain good mechanical strength at high temperatures and are suitable for long-term use.

Lightweight: boron nitride has low density, and the heater is lightweight and easy to install and maintain.

Parameters of Boron Nitride Heaters

Property	Typical Value	Unit	Notes
Material Type	Hexagonal Boron Nitride (h-BN)		Layered structure similar to graphite; most common form for heaters
Density	2.27	g/cm³	For h-BN
Hardness (Mohs Scale)	~2		Relatively soft compared to c-BN
Melting Point	>3,000	°C	High melting point ensures stability in high-temperature environments
Thermal Conductivity	60 – 300	W/m·K	Along the basal plane for h-BN
Coefficient of Thermal Expansion (CTE)	2.5 – 4.5	×10⁻⁶/°C	Low CTE minimizes thermal expansion and contraction
Electrical Resistivity	>10¹²	Ω·cm	Excellent electrical insulation
Dielectric Strength	10 – 20	kV/mm	Good dielectric properties
Chemical Stability	Chemically inert		Resistant to most chemicals, even at high temperatures
Friction Coefficient	0.1 – 0.2		Self-lubricating properties
Porosity	<1%		Typically very low porosity for dense sintered products
Flexural Strength	200 – 400	MPa	Depends on manufacturing process and material type
Compressive Strength	1,000 – 3,000	MPa	High compressive strength suitable for mechanical applications
Operating Temperature Range	-269 to +1,000	°C	Wide range from cryogenic to high temperatures
Neutron Absorption Cross Section	Moderate	barns	Beneficial for nuclear applications
Bandgap Energy	5.9 – 6.2	eV	Wide bandgap makes it suitable for high-power electronic devices
Heating Element Material	Nichrome, Molybdenum Disilicide		Common materials for embedded heating elements
Power Density	Up to 50	W/cm²	Varies based on heater design and application
Response Time	Fast	Seconds	Rapid heating and cooling cycles
Uniformity of Heating	±1 – 2%		Ensures consistent temperature profiles

Applications of Boron Nitride Heaters

Semiconductor manufacturing: Used in heat treatment and thin film deposition process of semiconductor wafers to provide a uniform high-temperature environment.

Metal Melting: Used as a heating element in high temperature melting furnaces, suitable for melting high purity metals and alloys.

Ceramic Sintering: Used for high-temperature sintering of ceramic materials to ensure material densification and optimization of properties.

Vacuum Coating: Used as a heating source in vacuum coating equipment to provide a stable high-temperature environment.

Research Experimentation: Used as a heating element in high-temperature experimental equipment, such as high-temperature furnaces and reactors.

Glass Processing: Used for heating in glass melting and molding processes to ensure homogeneity and quality of glass materials.

Aerospace: Used in high-temperature test equipment and material research to meet the high-temperature needs of the aerospace field.

Company Profile

RBOSCHCO is a trusted global chemical material supplier & manufacturer with over 12 years experience in providing super high-quality chemicals and Nanomaterials.

The company has a professional technical department and Quality Supervision Department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.

If you are looking for high-quality Boron Nitride Heaters please feel free to contact us or click on the needed products to send an inquiry. 

Payment Term

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

Packing and Storage

The product is in powder form and should be stored in a cool, ventilated place. Avoid inhalation when using it and keep away from open flames, heat sources, etc.

Shipment Term

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

FAQs of Boron Nitride Heaters

Question 1: What are the main components of a boron nitride heater?

Answer: Boron Nitride heaters are usually made of a high-purity boron nitride ceramic material, with a resistance wire embedded inside as the heating element, and may be externally wrapped in a metal shell to provide mechanical protection.

Question 2: Why is boron nitride chosen as the material for heaters?

Answer: Boron nitride has excellent electrical insulation, thermal conductivity, and chemical stability, can maintain stable performance at high temperatures, and has good corrosion resistance to many chemicals, making it ideal for use as a base material for heating elements.

Question 3: What is the operating temperature range of boron nitride heaters?

Answer: Boron nitride heaters are capable of withstanding extremely high operating temperatures and can typically operate stably from room temperature to over 1000°C (and even over 2000°C in inert or reducing atmospheres), depending on their design and application conditions.

Question 4: What application scenarios are boron nitride heaters suitable for?

Answer: Boron nitride heaters are widely used due to their characteristics in semiconductor manufacturing, vacuum furnace heating, laboratory equipment, sintering of electronic components, and other industrial fields that require precise temperature control and high purity environments.

Question 5: What do I need to pay attention to when using boron nitride heaters?

Answer: Care should be taken when using boron nitride heaters to avoid exceeding their maximum operating temperature in an oxidizing atmosphere, to ensure proper installation and connection, and to periodically check the integrity of the heater to prevent damage due to thermal stress or improper operation.