China Ceramic Alumina Tube manufacturer

Anti Chemical Precise Ceramic Disc Complicated Structure Gas Discharge Devices

Product Details:
Place of Origin: China
Brand Name: Jinghui ceramics
Certification: RoHS, REACH, ISO
Model Number: JH.MCI-020
Payment & Shipping Terms:
Minimum Order Quantity: 100pcs
Price: Negotiable
Packaging Details: Vacuum packaging and export carton
Delivery Time: 28~35 days
Payment Terms: T/T, Western Union, MoneyGram, Paypal
Supply Ability: 10000pcs/month

Detail Information

Product Name: Ceramic Metallized Disc Type: Ceramic Parts
Raw Material: 95%-99% Alumina Ceramic Density: 3.6-3.90g/cm3
Color: White Shape: Irregular
Size: Size Customized Package: Vacuum Packaging
Usage: For Electrical Vacuum Devices
High Light:

ceramic electrical insulators


ceramic standoff insulators

Product Description

Industrial High Precision Metalized Ceramic disc for Gas Discharge Devices

Many technologies have been used to join ceramics to metals, or ceramics to ceramics. Brazing is a desirable method for joining process because of its capability for joining dissimilar materials, high reliability and precision production tolerance. 

To join ceramics to itself or to metal, the critical problem is the poor wettability of ceramics by filler alloys.  When a metal layer applied on a certain surface of ceramic parts, it will help to fix the poor wettability well. That's why metalized ceramics play a very important role between ceramics to ceramics, ceramics to metals joining technology.

We manufacturer a variety of ceramic metalization components with different materials, different designs, different specifications. Many amazing solutions were to be supplied to our customers to reach their toughest technical challenges.

Anti Chemical Precise Ceramic Disc Complicated Structure Gas Discharge Devices 0 Anti Chemical Precise Ceramic Disc Complicated Structure Gas Discharge Devices 1 Anti Chemical Precise Ceramic Disc Complicated Structure Gas Discharge Devices 2 

Technical specification and production capability:

Optional material

95% alumina

99% alumina

Zirconium Oxide

Beryllia Oxide

Nitride Aluminum

Max. outer diameter

800 mm

Max. Inner diameter

780 mm

Max. length

1000 mm

Nominal tolerance

OD ±0.05 mm

Nominal tolerance

ID ± 0.10 mm

Nominal tolerance 

L ±0.50 mm

Nominal flatness

0.05 mm

Nominal roundness

0.10 mm

Nominal parallelism

0.05 mm

Surface treatment






Metalization types

Ceramic base + Mo/Mn

Ceramic base + Ag plating

Ceramic body +Mo/Mn + Ni plating

Ceramic body + W + Au plating

Prime features of metalized ceramics:

● High bonding/brazing strength                                   ● Min. electric resistance and vacuum tightness           

● High mechanical strength, insulation strength           ● Anti-chemical, anti-aging without corrosion              

● Super wear resistance with long service life

Key performance parameters of metalized ceramics

Leak rate

≤1×10-11 Pa•m3 / s Metal layer tensile strength ≥ 150Mpa

Volume resistivity

≥108Ω•cm CTE (6.5 ~ 8.0) × 10-6 /°C

Insulation strength

≥18kV/mm (D•C) Dielectric constant 9~10(1MHz, 20°C)

Visual quality: 1. No cracks, no bubbles; 2. Evenly distributed glaze; 3. No contamination


The typical application of metalized ceramic components

Anti Chemical Precise Ceramic Disc Complicated Structure Gas Discharge Devices 3

Metallized ceramic insulators are widely used in electronics, high-vacuum technology, sensors, and medical fields, like vacuum interrupters, electron tubes, feedthroughs, medical linear accelerators/ power tubes, photomultipliers, X-ray tubes, and pressure sensors.


Packaging proposal and transportation

1. Vacuum packaging with drier as the inner package;  2. An exported carton as the outer package;

3. The wooden case will be used if needed.

Anti Chemical Precise Ceramic Disc Complicated Structure Gas Discharge Devices 4


FAQs(Frequently asked questions)

Q1. Are you a factory or trading company?

A: Yes, We are a direct manufacturer. You are welcome to visit our factory.


Q2: Do you send a sample to check?

A: Sure, the sample is free and freight collect.


Q3: When will you ship it?

A: If the products are in storage, we'll ship within 48 hours


Q4: When can I get the price?

A: We regularly quote within 24 hours after we get your inquiry. If you are in urgent need of getting the price.

Please call us or tell us in your email so that we will proceed with your inquiry as a priority.


Q5: Is it available to provide customized products?

A: We always support custom-made demand as per different materials, dimensions, and designs.


Q6: How to ensure quality?

A: The dimension out of any batch will be carried out sampling inspection per international AQL standard. A 100% cosmetic inspection will be done.

Q7: What other products are you dealing with?

A: We focus on a variety of ceramic tubes, ceramic substrates, ceramic sheets, textile ceramics besides metalized ceramics.

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