Metallizing for Ceramic Components
2 month ago
Alumina Ceramics for RF Power Feedthrough
At present, the commonly used advanced ceramics in electric vacuum devices are aluminum oxide,beryllium oxide,boron nitride, aluminum nitride and diamond. Considering the cost performance, aluminum oxide ceramic is the most extensive material in the field. Alumina ceramics offer a great amount of characteristics of high thermal stability, high temperature resistance, dense material, low outgassing rate, low dielectric loss, high dielectric strength, high mechanical strength, good chemical stability, and high thermal conductivity. The alumina ceramics with metallization are easy to achieve the bonding strength and air tightness requirement after ceramic-to-metal bonding.
These metallized alumina ceramics are regularly formed via dry pressed,Isostatic pressed and hot pressed. Different shaping method depend on the real applications and both the size and the figuration of of ceramic body. The metallic layer will be adhered on designated surface of the ceramics via art-of-the-stated process, most of time, an additional metal coating is needed to enhance the wettability in the brazing procedure, mainly including nickle, silver and gold plating; Moreover, some certain surface need to be covered with a glaze to increase the mechanical strength and electrical insulation.All these detailed manufacturing process can be done at house with our comprehensive equipment.
Technical Key Parameters of metalized ceramic insulator
Leak Rate |
≤1x10-11Pa.m3/s |
Metal Layer Tensile Strength |
≥150Mpa |
Volume Resistivity |
≥108Ω•cm |
Coefficient of Thermal Expansion |
(6.5 ~ 8.0) × 10-6 /°C |
Insulation Strength |
≥20kV/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 application of of vacuum ceramic components
It's widely used in electronics, high vacuum devices, medical technology and sensor technology, military, aerospace and so on.
Main Manufacturing Flow Chat of metalized ceramics
We have in-house complete comprehensive manufacturing equipment from shaping to electroplating,also with various complex shaping production capability.Whatever, it's a prototyping need or cost down project, we believe we can help your business.
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Main Product:
Metallized ceramics,
Precision ceramics,
Pepper Grinder Mechanism,
Ceramic Grinding Mechanism,
Alumina Ceramic Plate,
Ceramic Substrate
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