Ceramic Heating Elements: Types, Characteristics, and Applications

Jul 25 , 2024

 

Ceramic heaters are mainly divided into two types: alumina and silicon nitride, with the following characteristics:

1. Miniaturization, light weight, and power saving; capable of achieving high power density and high thermal efficiency, allowing for the installation of heating elements with various capacities simultaneously.

2. Excellent thermal characteristics, demonstrated by fast heating rates and the ability to achieve any temperature distribution.

3. High safety and reliability, reflected in good electrical insulation performance and voltage resistance characteristics, with heating resistance not oxidizing, minimal disconnection and aging, and good corrosion resistance.

4. Wide application, capable of heating liquids such as water and kerosene, as well as solids like metals.

5. Environmentally friendly, with no pollution or noise.

 

Types and basic structure of ceramic heaters: The ceramic heating resistance material (resistance film, resistance sheet, or resistance wire) is embedded in alumina or silicon nitride ceramics. The heating resistance material and ceramic green body can be integrated through co-firing (simultaneous firing), completely isolating it from external air, with the ceramic heating body providing protection and insulation.

 

ceramic heating elements

 

The high-temperature co-firing of alumina ceramic heating elements involves directly printing resistance paste on the alumina ceramic green body. After lamination and debinding, it is co-fired at a high temperature of around 1600°C to form an integrated medium-low temperature heating element. The resistance paste is usually tungsten-based and is formed into a printed circuit on the alumina ceramic green body through screen printing, resulting in a heating thick film circuit after co-firing. Therefore, the performance of tungsten thick film paste is particularly important. The tungsten thick film paste should consist of three parts: functional phase, organic vehicle, and inorganic binder. The functional phase is tungsten particles, providing conductivity; the organic vehicle mainly forms a suspension and adjusts the paste viscosity; the inorganic binder ensures that after co-firing, the tungsten particles are firmly bonded to the substrate, forming a continuous phase.

 

Silicon nitride heating elements usually involve placing tungsten wire or printing other resistance paste within the silicon nitride formed body. A new type of flat heating element is made by pressing a mixture of heating resistance powder and silicon nitride powder, then co-firing at around 1750°C in a pressure sintering furnace under nitrogen pressure, resulting in an integrated silicon nitride heating element.

 

ceramic ignition heating elements

 

Ceramic heaters have a simple design, fast heating, high reliability, good safety, and excellent characteristics such as corrosion resistance, high temperature resistance, long life, high efficiency, energy saving, uniform temperature, and good thermal conductivity, making them widely used in automotive, petroleum, industrial, medical, semiconductor, and household appliance fields.

In diesel engines, ceramic heaters are used as starting aid glow plugs, employing silicon nitride heating elements with fast heating and excellent durability at high temperatures, resulting in cleaner exhaust emissions immediately after starting.

In automotive heating elements, such as auxiliary heaters for vehicles in cold regions, silicon nitride heating elements can quickly vaporize, ignite, and burn fuel. This allows for rapid heating of the car interior shortly after engine start and during idling stops.

As ceramic heating elements for oxygen sensors, ceramic heaters are used in oxygen sensors for exhaust gas detection in cars. Most gasoline engine cars are equipped with these heating elements. Due to their fast heating, they enhance sensor sensitivity during the low exhaust temperature phase right after engine start, helping to reduce exhaust emissions.

In the petroleum and gas equipment field, ceramic heaters are used as ignition heating elements. In kerosene heaters and gas stoves, they provide a stable ignition effect without the discharge sound and electrical noise of high-voltage spark ignition, and a larger heating area.

For vaporization and combustion heating elements, ceramic heaters, such as alumina heating elements in kerosene warm-air heaters, fully exploit their small size, high output, and fast heating characteristics, enabling the miniaturization of vaporization devices and shortening vaporization time.

 

ATCERA can produce ceramic heating elements, if need to get more information or any customized demand, please visit www.atcera.com or send email to info@atcera.com

Categories

FAQ

Although our primary focus is on advanced ceramic materials such as alumina, zirconia, silicon carbide, silicon nitride, aluminum nitride, and quartz ceramics, we are always exploring new materials and technologies. If you have a specific material requirement, please contact us, and we will do our best to fulfill your needs or find suitable partners.

Absolutely. Our technical team possesses profound knowledge of ceramic materials and extensive experience in product design. We are happy to provide you with material selection advice and product design support to ensure optimal performance for your products.

We do not have a fixed minimum order value requirement. We always focus on meeting our customers' needs, and we strive to provide quality service and products regardless of the order size.

In addition to ceramic products, we also provide a range of additional services, including but not limited to: customized ceramic processing services based on your needs, using blanks or semi-finished blanks produced by yourself; if you are interested in outsourced ceramic packaging and metallization services, please contact us for further discussion. We are always committed to providing you with a one-stop solution to meet your various needs.

Yes, we do. No matter where you are located globally, we can ensure the safe and timely delivery of your order.

Send Your inquiry

Upload
* File ONLY PDF/JPG./PNG. Available.
Submit Now

Contact With Us

Contact With Us
Simply fill out the form below as best you can. And don't sweat the details.
Submit
Looking for Video?
Contact Us #
19311583352

Office Hours

  • Monday to Friday: 9:00 AM - 12:00 PM, 2:00 PM - 5:30 PM

Please note that our office hours are based on Beijing Time, which is eight hours ahead of Greenwich Mean Time (GMT). We appreciate your understanding and cooperation in scheduling your inquiries and meetings accordingly. For any urgent matters or queries outside our regular hours, feel free to contact us via email, and we will get back to you as soon as possible. Thank you for your business, and we look forward to serving you.

Home

Products

whatsApp

contact