China Ceramic Alumina Tube manufacturer

99% Metallized Ceramic Tube Bushing Sleeve High Density Yttria Stabilized Ends Open

Product Details:
Place of Origin: Hunan, China
Brand Name: Jinghui ceramics
Certification: RoHS, REACH, ISO
Model Number: JH.MCT.010
Payment & Shipping Terms:
Minimum Order Quantity: 10 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 Bushing Material: 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 tube for furnace

,

ceramic vacuum interrupter

Product Description

Insulation 99% Alumina Metallized Ceramic Bushing for High Voltage Feedthrough

 

Prime characteristics of metallized ceramic bushing:

1. Exceptional bonding/brazing strength up to 150MPa/mm2

2. Superb low leak rate below to ≤1×10-11 Pa•m3 / s

3. High mechanical strength up to 320MPa at least

4. Electrical insulation strength up to 18KV. DC at least

5. Extremely anti-corrosion and free of rust forever

6. Can work under high temperature up to 1450℃

 

Specification of metallized ceramic bushing: 

1. Material: 96% alumina, 99% alumina, 99.5% alumina, zirconium oxide optional;

2. Shaping methods: hot pressing, dry pressing, ISO pressing optional;

3. Outer diameter: max. to be 300mm,  length: max. to be 500mm;

4. Surface treatment: external surface glazed,  internal surface polished optional;

5. Secondary processing: Both sides grinding, cylindrical grinding, CNC machining 

6. 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

Our facility support custom metalized ceramics from prototype to high volume production with our in-house comprehensive manufacturing types of equipment.

 

Description of metallized ceramic bushing:

Customized metallized ceramic sleeves are commonly made of 96%, but 99% and 99.5% alumina is available for us to proceed with metallization. In order to achieve the jointing from metal to ceramics, a metallic coating will be deposited on the surface of alumina ceramic insulators, it's referred to as metallization. We are dealing with a selection of metallizations, including molybdenum( Mo/Mn ) and Tungsten (W), also we could formulate the metallization according to customers' special needs.

All ceramic metallized bushings we manufacture are famous for the excellent bonding strength, super mechanical, exceptional electrical insulation, and thermal features. 

 

Applications:
High current/voltage 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 


Technical Datasheet for materials of metalised ceramic parts

 

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 tubes

We could produce lots of different types of metallized ceramic cylinders for electron tubes, vacuum interrupters, vacuum breakers.99% Metallized Ceramic Tube Bushing Sleeve High Density Yttria Stabilized Ends Open 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 orders, 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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