China Ceramic Alumina Tube manufacturer

Various Coating Alumina Ceramic Insulator High Performance Rust Proof Anti Aging

Product Details:
Place of Origin: Hunan, China
Brand Name: Jinghui ceramics
Certification: RoHS, REACH, ISO
Model Number: JH.MCI.005
Payment & Shipping Terms:
Minimum Order Quantity: 1000 Piece/Pieces
Price: Negotiable
Packaging Details: Vacuum packing with desiccant
Delivery Time: 4~5 weeks
Payment Terms: T/T, Western Union, MoneyGram, Paypal, , L/C
Supply Ability: 20000 Piece/Pieces per Month

Detail Information

Product Name: Metallized Ceramic Isolator Material: High Purity Alumina Ceramic
Color: Pure White Shape: Ceramic Cylinder, Ceramic Tube
Size: Size Customized Type: Ceramic Parts
Metallization Type: Mo-Mn Metallization As Base Layer Outer Plating: Ni, Au, Ag Further Covering
Certificate: ISO9001:2008/SGS/ROHS Usage: Joint From Ceramic To Metal
High Light:

ceramic electrical insulators

,

ceramic wire insulators

Product Description

High-Performance Refractory Metallized Alumina Ceramics for Electronics

Typical metallization types:

● Ceramic body + Silver (Ag) plating

● Ceramic body + Molybdenum-Manganese ( Mo-Mn) metallization

● Ceramic body + Molybdenum-Manganese ( Mo-Mn) metallization + Nickle ( Ni ) plating

● Ceramic body + Tungsten ( W ) metallization + Gold ( Au ) plating

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

Main characteristics of Metallized alumina ceramics

● Min. electric resistance and vacuum tightness, and less than 1×10-11 Pa•m3 / s

● High bonding/brazing strength, It can be up to 150 MPa after brazing

● High mechanical strength, flexural strength can be up to 338 MPa

● High insulation, anti-chemical and anti-aging. It will be free of rust forever

Description of metallized alumina ceramics

Jointing ceramics to metals or ceramics to ceramics has been extensively used in many electronics, electrical, high vacuum technology, medical technology, and sensor technology. Brazing is often the preferred method for joining process because of its capability for joining dissimilar materials, high reliability and precision production tolerance. To join ceramics to ceramics or to metal, the critical issue is the poor wettability of ceramics by filler alloys. This problem is usually solved by treating the ceramic surface to give them metallic characteristics. Then a metallic layer will be applied on the ceramic end surface, cylindrical surface or a specific section of the ceramic body. The most widely known metallization process is the molybdenum and tungsten process.

In order to enhance the wettability of the solder at the brazing/bonding process, a preferred metal coating is always deposited as requested following by Mo/Mn or W layer. Also, the coating will prevent the metallization into oxidizing.

Applications:
Vacuum interrupters, Vacuum circuit breakers, Feed-through insulators, Headers, High-power receptacles, Insulating discs, Insulator rings and cylinders, Precipitator products, Power switches, Traveling wave tubes, Windows, Power grid tubes, X-ray tubes 


Material Data. Sheet

 

General

 

Property

 

Units

 

99%Al2O3

 

95%Al2O3

 

ZrO2

Mechanical Density g/cm3 ≥3.80 ≥3.60 ≥6.0
Water absorption % 0 0 0
Hardness HV 1700 1500 1300
Flexural strength Mpa ≥338 ≥320 ≥1200
Compressive strength Mpa ≥2240 ≥2000 ≥1990
Fracture toughness Mpa m 1/2 4-5 3-4 6.5-8
Thermal Max. service
temperature
(Non-loading)
1600 1450 1000
CTE (20-800℃) 1×10 -6 /℃ 6.2~8.0 5.0~8.0 8.0~9.5
Thermal shock T(℃) ≥200 ≥220 ≥300
Thermal conductivity (25℃ ) W/m.k 29 24 3
Specific heat 1 x 10 3 J/(kg·K) 0.78 0.78 0.46
Electrical Volume resistivity (25℃ ) ohm.cm >1 x 10 14 >1 x 10 14 >1 x 10 11
Insulation strength KV/mm 18 18 17
Dielectric constant (1Mhz) (E) 9.5 9.5 29

 

Other related metallized ceramic isolators

We also produce lots of different types of metallized ceramic cylinders for electron tubes, vacuum interrupters, vacuum breakers.Various Coating Alumina Ceramic Insulator High Performance Rust Proof Anti Aging 1 

 

Packaging proposal & Transportation methods

 

1. Vacuum packing with desiccant as an inner package;

2. Then, exported carton as an outer package.

3. Finally, it will be packed with a wooden case if needed.

4. We regularly use DHL, UPS, FedEx, and TNT to ship small parcels.

5. For large volume order, we could ship it by sea as per customers' needs.

 

FAQs (Frequently Asked Questions)

Q1: Is it available to produce customized products?

A: We always support custom-made metallic coated ceramic insulators as per different dimensions, designs, metallization, and platings.

 

Q2. 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. 

 

Q3. How long can I expect to get the sample?

A: After you pay the sample charge and send us confirmed files, the samples will be ready for delivery in 4 weeks. The samples will be sent to you via express and arrive in 3-5 workdays. You can use your own express account or prepay us if you do not have an account.


Q4. How long does the whole procedure being worked out?

A: After you place an order, the manufacturing time is about 25 working days. 

 

Q5. 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. 

 

Q6. Are you a factory or trading company?
A: We are a professional manufacturer. We are warmly welcome clients from worldwide to visit our factory and cooperate with us.

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