Refractory Metallized Alumina Ceramics for RF Feedthroughs
The description of the metalized ceramic insulator
We manufacture a diversity of metalized ceramic insulators with different specifications, like metalized ceramic tubes, metalized ceramic rings, metalized ceramic substrates, and so on. These Metallized Ceramics are made of aluminum oxide, zirconium oxide, or beryllia ceramics via dry pressing, injection molding, or hot pressing.
We can proceed with small part-size to large part-size, the min. diameter can be 1mm, the largest diameter is up to 800mm. In order to meet customers' different needs, we offer a selection of types of metallization, the typical ones as below:
1. Ceramic base + Molybdenum (Mo/Mn) metallization
2. Ceramic base + Mo/Mn metallization + Nickle(Ni) plating
3. Ceramic base + Silver(Ag) plating
4. Ceramic base + Tungsten (W) metallization + Gold(Au) plating
We offer different grade precision metalized ceramic insulator when you need these ceramic components to be very precise, these vacuum ceramic components would be further proceeded via lapping, grinding, CNC machining before metallization on-site production. The finest tolerance can be +/-0.001 for length, +/-0.005 for both inner and outer diameter.
The Prime Characteristics
The prime features of alumina metalized ceramics
1. High bonding/brazing strength with ideal vacuum tightness between the assembly
2. With diamond-like hardness to be 85 HRV and superb compressive strength
3. Great insulation strength and volume resistivity that fit for various high voltage high current applications
4. Chemical stability, anti-aging even if it works in a variety of harsh environments, free of rust forever.
5. Over 276 times wear resistance in comparison with stainless steel, leads to a long service lifespan.
The key parameters of metalized 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) |
| Cosmetic quality: 1. No cracks, no bubbles; 2. Evenly distributed glaze; 3. No contamination |
The typical application of metalized ceramics
Metalized ceramics are widely used in electronics, high-vacuum technology, sensors, and medical fields,
like vacuum interrupters, electron tubes, feed-throughs, medical linear accelerators/ power tubes, photomultipliers, X-ray tubes, and pressure sensors
Typical Metallized Ceramic Insulators
The packaging solution and transportation
Remark:
1. Metalized ceramic will be packed in a vacuum state package with desiccant.
2. Then the vacuum package will be put into export use cartons individually
3. If needed, it will be packed in a wooden case or loaded on an export-use pallet.
Why choose us?
★ 10+ Years of manufacturing experience in OEM, ODM for producing a variety of technical ceramic parts
★ In-house comprehensive manufacturing types of equipment from raw material to secondary process
★ Powerful R&D and mass production capability to support and meet customized needs in a short time
★ Rigorous quality control system and processes from incoming material to shipping of finished goods
★ Surpassing pre-sales and after-sales service, all actions we do are just for customers' business growth
FAQs (Frequently Asked Questions)
Q1. Are you a factory or a trading company?
A: We are a manufacturer with 12 years of OEM, ODM experience for technical ceramic components.
Q2: Do you send a sample to check?
A: For sure, the standard type of sample in stock would be free of charge, but freight collect.
Q3: 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 can proceed with your inquiry as a priority.
Q4: Is it available to provide customized products?
A: We always support custom-made demand as per different materials, dimensions, and designs.
Q5: How to ensure quality?
A: The dimension of any batch will be carried out sampling inspection per the international AQL standard.
The cosmetic inspection will be done fully.
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