Hunan Meicheng Ceramic Technology Co., Ltd.
Hunan Meicheng Ceramic Technology Co., Ltd.
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1. Description:
Alumina Ceramic Header Assembly is made 95 percent alumina materials , it is metalized on contacting points by nickel coating. It is suitable for brazing of different materials such as copper, aluminum and felling.
2. Key words:
hermetically sealed battery disconnect device,Nickel layer,compact, continuous, smooth and weldability,high flexural strength, high tensile strength and good air tightness, make samples according to client's drawings,alumina ceramic,relay housing, metalized ceramic,header assembly,electrical property,dielectric constant, sealed battery, high purity alumina.
3. Technical 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 | |
