China Ceramic Alumina Tube manufacturer

High Voltage Ceramic Cap Size Customized Advanced For Metal Joining

Product Details:
Place of Origin: China
Brand Name: Jinghui ceramics
Certification: RoHS, REACH, ISO
Model Number: JH.MCI.007
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: 5000 pieces / month

Detail Information

Product Name: Metalized Ceramic Cap Type: Ceramic Parts
Raw Material: 95%-99% Alumina Ceramic Density: 3.65g/cm3
Color: White Shape: Customized Designs
Size: Size Customized Package: Vacuum Packaging
Usage: For Medical X-Ray Tube
High Light:

ceramic electrical insulators


ceramic standoff insulators

Product Description

High Voltage Advanced Alumina Metalized Ceramic Cap for Ceramic to Metal Joining

Prime characteristics of metallized ceramic insulators:

● High bonding/brazing strength up to 150 Mpa for brazed assembly                   

● Min. electric resistance and vacuum tightness

● High mechanical strength, insulation strength up to 18KV/mm at D•C
● Anti-chemical, anti-aging without corrosion and free of rust forever 

● Super wear resistance with long service life

Description of metalized ceramic insulator:

The metallization of alumina ceramics (min. 94.4% alumina) was performed by the molybdenum-manganese process in hydrogen and nitrogen reduced atmosphere under 1250℃ ~1450℃ cured. After the sintering, the metallic coating will adhere to the ceramic part, the typical metallized layers consist of tungsten as well besides for Mo/Mn. In order to enhance the brazing effect, certain electroplating will be covered by metallization layers, such as nickel, silver or glad plating, then the metallized ceramics can achieve ceramic to metal, ceramic to ceramic joining application well.

Jointing type of metallization

● Ceramic base + Molybdenum-Manganese ( Mo - Mn) metallization,   20 ~ 40um thick

● Ceramic base + Silver ( Ag) plating,   2~ 4um thick

● Ceramic base + Molybdenum-Manganese (Mo - Mn) + Nickle (Ni) plating, Mo/Mn: 20 ~ 40um thick, Ni: 2~6um thick

● Ceramic base + Tungsten ( W) + Gold (Au) plating, W: 20~40um thick, Au:  0.5um thick 


Key performance parameters of metallized 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 main application of metallized ceramic cap:

It widely used in electronics, high-vacuum technology, medical and sensor fields 


Other related metallized ceramic cap

We are capable of producing a great many complicated structure metallized ceramic insulators as per customer's specification, special needs. Whatever, it's a small-size part or large-size part, we could achieve it well. 

High Voltage Ceramic Cap Size Customized Advanced For Metal Joining 0

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.
High Voltage Ceramic Cap Size Customized Advanced For Metal Joining 1

Why choose us?

★ 10+ Years of manufacturing experience in OEM, ODM                  ★ Powerful R&D, mass production capability

★ In-house comprehensive manufacturing types of equipment         ★ 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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