Place of Origin: Guangdong, China
Material Introduction:
This ignition electrode assembly consists of a 95%–99.7% high-purity alumina ceramic (Al₂O₃) insulator and a heat-resistant alloy electrode.
Functional Features:
It provides reliable high-voltage insulation, heat resistance and oxidation resistance while maintaining stable spark discharge during frequent ignition and repeated heating cycles. Ceramic dimensions, electrode structure, lead wires and mounting options can be produced according to equipment requirements.
Application Industries:
Suitable for gas appliances, industrial burners, boilers, water heaters, gas ovens, commercial kitchen equipment, fireplaces, industrial furnaces and heat-treatment equipment. View more ceramic igniters.
Global OEM Supply:
Serving OEM customers in the USA, Germany, Japan, and Europe.
Lead Time:
Standard-geometry components: 20–35 days. OEM or high-precision ignition electrode assemblies: 45–75 days.
This high-purity alumina ceramic ignition electrode is a spark-ignition component for industrial combustion systems. It combines a 95%–99.7% alumina ceramic insulator with a heat-resistant alloy electrode and is used in burners, boilers, gas appliances, and high-temperature ignition equipment. The assembly maintains insulation and consistent spark discharge under heat, high voltage, and repeated ignition cycles, helping reduce leakage, surface arcing, and carbon-related ignition faults.
High-purity alumina ceramic (Al₂O₃) provides a volume resistivity above 1014 Ω·cm and a dielectric strength above 18 kV/mm. It also offers good thermal stability, mechanical strength, and resistance to high-temperature oxidation. Precision finishing and glazing are available to reduce the buildup of moisture, soot, and carbon deposits on the ceramic surface.
| Application | Purpose |
|---|---|
| Industrial Burners | Produces a stable spark for gas or oil ignition. |
| Boilers and Water Heating Equipment | Supports reliable ignition during repeated start-stop cycles. |
| Gas Ovens and Commercial Kitchen Equipment | Operates in hot, humid, and grease-exposed environments. |
| Industrial Furnaces and Heat-Treatment Equipment | Provides electrical insulation close to high-temperature combustion zones. |
| Fireplaces and Gas Heating Equipment | Supports frequent ignition over long operating periods. |
| Incineration and Thermal Energy Equipment | Works around flame, heat, and combustion residues. |
View more ceramic igniters and ignition components .
| Parameter | Technical Indicator | Functional Significance |
|---|---|---|
| Material Grade | 95%–99.7% Alumina | Maintains electrical insulation in high-temperature environments. |
| Dielectric Strength | 18–25 kV/mm | Helps prevent high-voltage leakage and arcing through the ceramic body. |
| Maximum Operating Temperature | 1450–1750°C | Maintains structural stability near the flame zone. |
| Volume Resistivity | >1014 Ω·cm | Provides stable high-voltage insulation. |
| Surface Finish (Ra) | ≤0.4 μm, glazed or polished | Reduces the adhesion of moisture and carbon deposits. |
| Thermal Shock Resistance | ΔT 200–250°C | Reduces cracking during rapid heating and cooling. |
| Flexural Strength | 300–400 MPa | Handles mechanical stress during installation and operation. |
| Electrode Material | Kanthal / Ni-Cr / Pt-Rh | Selected according to operating temperature and oxidation resistance requirements. |
Actual operating limits depend on the alumina grade, assembly design, electrode material, mounting position, and working atmosphere. Final specifications should be confirmed for each application.
| Material | Electrical Insulation | High-Temperature Performance | Thermal Shock Resistance | Relative Cost | Suitability for Ignition Electrodes |
|---|---|---|---|---|---|
| Alumina Ceramic | Excellent | Excellent | Good | Medium | A balanced choice for most industrial ignition electrode assemblies. |
| Zirconia Ceramic | Good | Moderate | Good | Higher | Better suited to designs where toughness and impact resistance are priorities. |
| Silicon Nitride Ceramic | Good | Excellent | Excellent | High | Suitable for specialized systems exposed to severe thermal shock. |
| Standard Insulating Ceramic | Moderate | Moderate | Moderate | Lower | Used where voltage and temperature demands are limited. |
Alumina is often the practical choice when an ignition electrode must balance electrical insulation, flame resistance, dimensional stability, and production cost.
It is a spark ignition electrode assembly. The alumina ceramic provides high-voltage insulation and structural support; it is not a resistance heating element.
Alumina grades from 95% to 99.7% can be selected according to the required insulation level, operating temperature, and budget. The electrode material depends on flame temperature, atmosphere, oxidation resistance, and ignition frequency.
A smoother surface reduces the adhesion of moisture, soot, and carbon deposits. This helps lower the risk of surface leakage and unstable spark discharge.
Yes. Ceramic dimensions, electrode length, spark gap, lead wires, terminals, and mounting brackets can be produced from drawings or samples. For evaluation, please provide a 2D or 3D drawing, operating voltage, working temperature, and order quantity.
It can be used in gas-fired, oil-fired, and selected industrial combustion systems. The final design should be matched to the fuel, ignition voltage, flame position, and operating temperature.
Yes. Samples can be produced for installation and ignition testing. Standard-geometry components usually require 20–35 days, while OEM or high-precision assemblies generally require 45–75 days.
Yes. We supply alumina ceramic ignition electrode assemblies to OEM customers in the USA, as well as Germany, Japan, and Europe. Drawing review, sample validation, and production orders are supported.
