China Ceramic Alumina Tube manufacturer

Thick Film Deposition Metallized Ceramic Insulator , Ceramic Washer 3.6-3.90g/Cm3

Product Details:
Place of Origin: China
Brand Name: Jinghui ceramics
Certification: RoHS, REACH, ISO
Model Number: JH.MCI.010
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: Metallization Ceramics 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 wire insulators

Product Description

Thick Film Deposition Metalized Ceramic Washer for High Vacuum Technology
Ceramic-to-metal and ceramic to ceramic bonding have been one of the biggest challenges in the high voltage, high power, electronic industries, high current vacuum electrical in the past years because of their inherent differences in the thermal expansion coefficients of the two types of materials. So far, the most regular preferred and effective method for creating a leak-tight, robust joint between ceramic and metal is by brazing. This starts with the chemical bonding metallization of the ceramic to create a wettable surface on which braze alloy will flow between the two components during the brazing process.
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:
● 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

Leak rate

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

Volume resistivity

≥108Ω•cmCTE(6.5 ~ 8.0) × 10-6 /°C

Insulation strength

≥18kV/mm (D•C)Dielectric constant9~10(1MHz, 20°C)

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


Typical application of metalized ceramic components

Thick Film Deposition Metallized Ceramic Insulator , Ceramic Washer 3.6-3.90g/Cm3 0
Metalized 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 to be a vacuum state with drier as the inner package; 
2. An exported carton as the outer package;  Inside of carton will be filled with protective kinds of stuff.
3. The wooden case will be used if needed when the carton is very heavy.

Why choose us?

★ 10+ Years of manufacturing experience in OEM, ODM              ★ In-house comprehensive manufacturing types of equipment 
★ Powerful R&D, mass production capability                                 ★ Rigorous quality control system and processes                         
★ Surpassing pre-sales and after-sales service                             ★ Abide all orders as the first priority

FAQs (Frequently Asked Questions)

Q1. Are you a factory or trading company?
A: We are a 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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