



High Voltage Alumina Metalized Ceramic Insulator
High Voltage Alumina Metalized Ceramic Insulator for X-ray Tube
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High Voltage Alumina Metalized Ceramic Insulator for X-ray Tube
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, it leads to a long service lifespan.
High Voltage Alumina Metalized Ceramic Insulator
The key parameters capability 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 description of the metalized ceramics
1. It’s made of 95% aluminum oxide ceramics which has superb mechanical, electrical, and thermal properties.
2. The metallic layer will be applied to a certain surface of ceramic parts which cured by high temperature;
3. Then the metallic layer will adhere to the section tightly to achieve ceramic to ceramic, ceramic to metal jointing.
4. Jointing type of metallization
A. Ceramic base + Silver ( Ag) plating, 10~ 80um thick
B. Ceramic base + Molybdenum ( Mo – Mn) metallization, 20 ~ 40um thick
C. Ceramic base + Molybdenum (Mo – Mn) + Nickle (Ni) plating, Mo/Mn: 20 ~ 40um thick, Ni: 2~6um thick
D. Ceramic base + Tungsten ( W) + Gold (Au) plating, W: 20~40um thick, Au: 0.2um thick
Overview of Main Physical Properties:
1.Good electrical insulation
2.High mechanical strength
3.Excellent wear resistance
4.Excellent corrosion resistance
5.Low dielectric constant
Overview of Main Applications:
1.Pump seals and other components
2.Wear resistant inserts
3.Insulating washers or bushings
4.Semiconductor components
5.Aerospace components
6.Automotive sensors
7.Electrical or electronic insulators
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