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High Vacuum-tight Ceramic-to-metal
1.Description
Metallized ceramics is to firmly adhere a layer of metal film on
the surface of the ceramic to realize the combination between the
ceramic and the metal, so that it has both the characteristics of
ceramics and the properties of metal. There are various ceramic
metallization processes such as molybdenum-manganese sintering
method, gold electroplating, copper electroplating, tin
electroplating, nickel electroplating, vacuum plating and so on.
2.Key Words:
Power, electrical appliances, communications, national defense, aerospace and many other aspects, lightning protection, overcurrent ,overvoltage protection devices,manufacture samples , open mould ,aluminum oxide,thick-film nickel plating technology,copper and alloys,great limberness,Good corrosion resistance,High intensity,Good high-temperature resistance performance,High purity.
3.Parameters:
Product Parameters | ||
Physical Property | Material | 95% Alumina |
Production Process | Dry Pressing | |
Product Dimension | Per customers' drawing | |
Density (g/cm3) | 3.70-3.75g/cm3 | |
Water Absorption | 0% | |
Mechanical Performance | Flexural Strength (Mpa) | 310Mpa |
Modulus of Elasticity (Gpa) | 310Gpa | |
Hardness (Gpa) | 12.9Gpa | |
Poisson Ratio | 0.23 | |
Thermal Character | Linear Thermal Expansion Coefficient | 7.2 |
Heat Conductivity (W/mk) | 23 | |
Electrical Property | Dielectric Constant | 9.2 |
Dielectric Loss Tangent (x10-4) | 8 | |
Insulation Strength (x106V/M) | 15 | |
Metalized Ceramic Performance | Air Tightness (Pa·m3/s) | ≤10-8 |
Bulk Resistivity (Ω·cm) | ≥1010 (20°C), ≥106 (300°C) | |
Bonding Strength (Mpa) | ≥120Mpa | |
Metallization Thickness (μm) | ≥20μm |