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XTL Sintyron alumina Vacuum ceramic flange electrode metallized ceramic parts

Alumina vacuum ceramic flange electrode is a type of electrode made from alumina ceramic material, designed for use in vacuum systems. These electrodes are typically used in high temperature and high vacuum environments where conventional metal electrodes may not be suitable.

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XTL Sintyron alumina Vacuum ceramic flange electrode metallized ceramic parts

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A vacuum electrode flange is a common connection device used to connect two devices or pipes in a vacuum system. Its design and performance are critical to the stable operation of vacuum systems. This paper introduces the structure, principle, application and maintenance of vacuum electrode flanges.

alumina vacuum ceramic flange electrode offers excellent thermal stability, high temperature resistance, and corrosion resistance. It is also known for its high dielectric strength and electrical insulation properties, making it an ideal choice for applications requiring high voltage and high temperature operation.

The flange design of the electrode allows for easy installation and removal from the vacuum system, making it convenient for maintenance and replacement. The alumina material ensures long-term reliability and durability, even in harsh operating conditions.

the alumina vacuum ceramic flange electrode is a versatile and reliable component for various vacuum system applications, providing stable and efficient electrical performance for extended periods of time.

Our metallizing processes could be customized according to clients’ requirements.

Major components

95% 96%.99  Al2O3





Material properties

Water absorption



Sintering temperature



Physical properties




Flexural strength



Compressive strength



Fracture toughness




Maximum temperature



Thermal properties

Coefficient of thermal expansion




Heat shock



Thermal conductivity


25 14






Volume resistivity




Electrical Characteristics




Insulation breakdown strength



dielectric constant



Joining types:

Ceramic + Mo/Mn Metallized + plating Ni

Ceramic + Mo/Mn Metallized + plating Ag

Ceramic + Mo/Mn Metallized + plating Au

Ceramic + printing Ag

* Special types are available according to customer's drawings or samples.

Material :

· Insulator-Glazed Ceramic 96% Al2O3 (white)

· Feedthrugh – Nickel, Kovar, Copper

· Weld Sheath/Flange-Nickel, Kovar, 304 Stainless Steel

The vacuum electrode flange is usually composed of the following structures:
1. Contact: used to connect two flanges, usually made of copper or stainless steel.
2. Flange: a flat plate mounted on the contact, between which a vacuum sealing chamber is formed.
3. Bolts: Components for fixing and connecting flanges.
4, insulation gasket: the insulation material installed between the bolt and the flange to ensure the insulation performance of the flange.
5, conductive plug: used for grounding at non-standard connections to ensure the electrical safety of the system.


· Feedthroughs are custom made to specifications that determined by the electrical, temperature, and environmental condition requirements.

· Standard parts are available


· High Abrasion Resistance

· High Mechanical Strength

· Pressures over 10,000 PSI

· High Temperature Usage

· Low Dielectric Loss

· Mass Spectrometer Leak Tested

· High Chemical Stability
· High conductivity
· High temperature resistance
· Corrosion resistance

Vacuum electrode flanges are widely used in the following fields:
1, scientific research: In the experiments of physics, chemistry and material science, vacuum electrode flanges are usually used to connect equipment such as vacuum chambers, experimental instruments and triggers.
2, industrial manufacturing: In industrial fields such as semiconductor manufacturing, lithography technology and vacuum metallurgy, vacuum electrode flanges are used to connect various devices in vacuum systems to ensure process stability and quality.
3, medical equipment: In the medical field, vacuum electrode flanges are widely used in X-ray machines, CT scanners and nuclear magnetic resonance imagers and other equipment.

Company Information




Why us?
* Professional manufacturer since 1997.
* Strict quality control on production process and tolerance.
* Free samples available
* Customized production based on your drawing or specification
* On-time delivery and reliable support and service
* Inventory available for quick shipment
* We keep confidentiality of all the drawings and business information between us.
Are you a trading company or a manufacturer?
* We are a manufaturer. 
Can you provide the free samples?
* Yes,we can offer free sample if we have it in stock,but the courier fee is to be collected.
Do you accept customized production based our specification?
* Yes,we offer OEM and ODM service. Just send us your drawing if you have it. If you don’t have a drawing, just tell us your idea, we will work out the drawing for you.

What's the delivery time?
* 7 working days for standard products 30 days for customized products. 
What is the MOQ?
* No limit to the quantity. We can offer the best proposal and solutions according to your condition.
What is the payment terms you accept?
* T/T,LC,Western Union,moneygram are acceptable.
How to deal with the faulty?
* Firstly, Our product are produced in strict quality control system and the defective rate will be less than 2%.
If there are problems with the product, we will provide free replacement.

Intention information