| Model NO. | Customized |
|---|---|
| Material | 96%, 99% and 99.5% Alumina |
| Application | Refractory, Structure Ceramic, Industrial Ceramic, Brazing |
| Color | White, Beige, Pink |
| Usage | for Ceramic to Metal Joint Technology |
| Transport Package | Vacuum Packaging with Desciant |
| Production Capacity | 50000/Month |
The description of the metalized ceramics
Ceramic-to-metal and ceramic to ceramic bonding have been one of the biggest challenges in the high voltage, high power, electronic industries, high current vacuum electrical in the past years because of their inherent differences in the thermal expansion coefficients of the two types of materials. So far, the most regular preferred and effective method for creating a leak-tight, robust joint between ceramic and metal is by brazing. This starts with the chemical bonding metallization of the ceramic to create a wettable surface on which braze alloy will flow between the two components during the brazing process.
Standard types of the metalization
1. Alumina ceramic base + silver (Ag) plating directly
2.Alumina ceramic base + molybdenum (Mo/Mn) metallization
3.Alumina ceramic base + molybdenum (Mo/Mn) metallization + nickel (Ni) plating
4. Alumina ceramic base + tungsten (W) metalization + gold (Au) plating
The key parameters capability
| 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 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.
Jinghui Ceramic
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