Industrial 95% Alumina Metalized Ceramic Housing for High Vacuum Technology
Our facility supplies numerous precision metallized ceramic housing
in aluminum oxide ceramics, aluminum nitride, zirconia and
beryllium oxide for the electrical, electronic, medical, and
aerospace industries. A metallic layer is applied to the specific
section of the ceramic base body through screen printing, pad
printing, and brush methods. Our capabilities allow us to
metallized on flat, cylindrical, and complex ceramic bodies.
Moly-Manganese (Mo/Mn) is the typical base layer material used for
metallization. Besides, we offer tungsten(W) as the metallization
layer.
In common cases, a metal coating will be covered following by the
metallization layer, like nickel, gold plating. It will increase
the wettability in the brazing process and prevent the metalized
ceramics from oxidizing as well.
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 | Glaze | Polishing |
|
|
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 / 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 |
Typical application of metalized ceramic components
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 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.
